Global Status of Commercialized Biotech & GM Crops: From Traditional GM Technology to CRISPR and Precision Breeding
Part 1 – Introduction and Historical Background of Commercial Biotech Crops
📌 Article Update
Updated: 2026
This article has been reviewed and updated to provide a broader and more current overview of agricultural biotechnology and commercialized genetically modified (GM) crops.
The updated version includes additional information on global GM crop adoption, major commercial traits, country-level developments, CRISPR-based genome editing, base editing, prime editing, precision breeding, genomics, and emerging applications of artificial intelligence in crop improvement.
Historical information has been retained where it provides useful context for understanding the development of agricultural biotechnology. As scientific research, regulatory frameworks, commercial approvals, and biotechnology applications continue to evolve, this article will be reviewed periodically and updated when significant developments become available.
Last reviewed: 2026
Introduction
Agriculture has continuously evolved in response to changing human needs. From traditional selection of desirable plants to hybrid breeding, molecular markers, genomics, and genetic engineering, each generation of agricultural technology has provided breeders and farmers with new tools for improving crop production.
Among these technologies, genetically modified (GM) crops, also commonly referred to as biotech crops, represent one of the most significant developments in modern agricultural biotechnology.
Commercial cultivation of genetically engineered crops began in the mid-1990s. Since then, biotech crops have moved from experimental research programs into large-scale agricultural production in many parts of the world.
The first major commercial applications focused primarily on two traits:
Over time, biotechnology expanded into additional characteristics, including disease resistance, improved nutritional or processing quality, altered oil composition, reduced food waste, and tolerance to particular environmental stresses.
However, the global status of biotechnology is more complex than simply measuring the number of hectares planted with GM crops. Adoption varies considerably between countries because of differences in agricultural systems, regulatory frameworks, seed availability, farmer preferences, market requirements, public perception, and national policies.
This article therefore examines the development of commercial biotech crops from their beginnings in 1996 through the latest developments available up to 2026.
What Are Biotech or GM Crops?
A genetically modified crop is a crop whose genetic material has been deliberately altered using biotechnology to introduce or modify a particular characteristic.
The objective is generally to provide a useful agricultural, nutritional, environmental, or quality-related characteristic.
For example, a crop may be genetically modified to:
Resist a particular insect pest
Tolerate a specific herbicide
Resist a plant virus
Improve nutritional characteristics
Modify oil composition
Reduce browning or food waste
Improve tolerance to particular environmental stresses
The exact genetic modification depends on the crop and the desired trait.
It is important to understand that not all GM crops are the same. A Bt cotton variety, a herbicide-tolerant soybean, a virus-resistant papaya, and a quality-enhanced potato have different genetic characteristics and different purposes.
Therefore, safety and performance should be evaluated on a product-by-product basis, rather than treating every genetically engineered crop as identical.
Genetic Engineering in Agriculture
Traditional plant breeding usually involves crossing plants with desirable characteristics and selecting offspring over successive generations.
Modern biotechnology provides additional tools that can complement traditional breeding.
Genetic engineering can allow researchers to introduce a specific genetic sequence or modify genetic function to produce a desired characteristic.
The basic concept can be represented as:
Desired trait → Identify genetic mechanism → Develop genetic construct → Introduce into crop → Select and evaluate plants → Biosafety and regulatory assessment → Commercialization
This process can take many years because candidate plants must undergo extensive laboratory, greenhouse, field, molecular, agronomic, and safety evaluation before commercial use is permitted.
Why Were GM Crops Developed?
Farmers around the world face many biological and environmental challenges.
Important agricultural constraints include:
Insect pests
Insects can damage leaves, stems, roots, fruits, seeds, and reproductive structures. Severe pest infestations can significantly reduce both yield and crop quality.
Weeds
Weeds compete with crops for:
Water
Nutrients
Light
Space
Effective weed management is therefore an important part of crop production.
Plant diseases
Viruses, bacteria, fungi, nematodes, and other pathogens can cause major agricultural losses.
Environmental stress
Agriculture is increasingly affected by:
Drought
Heat
Salinity
Flooding
Changing pest populations
Irregular rainfall
Increasing demand for food
Global agriculture must produce sufficient food, feed, fiber, and industrial raw materials while dealing with limited land and water resources.
Biotechnology is one of several approaches being investigated to address these challenges.
The Beginning of Commercial GM Crops
The modern commercial era of GM crops began in 1996.
According to ISAAA's historical global assessment, approximately 1.7 million hectares of biotech crops were planted in 1996.
The technology subsequently expanded rapidly.
By 2019, the ISAAA global assessment reported approximately 190.4 million hectares of biotech crops cultivated across 29 countries.
This represents a remarkable increase from the relatively small area recorded during the first year of commercial cultivation.
The growth demonstrates that certain biotechnology traits were accepted by farmers because they provided practical advantages within particular agricultural production systems.
The First Major Commercial Traits
1. Herbicide-Tolerant Crops
One of the earliest major applications of agricultural biotechnology was the development of crops tolerant to particular herbicides.
The objective was to provide farmers with an additional method for controlling weeds without severely damaging the crop.
Herbicide-tolerant technology became particularly important in large-scale soybean, maize, cotton, and canola production.
Potential advantages included:
Flexible weed-control timing
Simplified weed management
Reduced mechanical cultivation in some systems
Compatibility with conservation-tillage practices
Improved operational efficiency
However, herbicide tolerance also created new management challenges.
Repeated reliance on the same herbicide mode of action can contribute to the evolution of herbicide-resistant weeds. Consequently, integrated weed management and rotation of herbicide modes of action remain important.
2. Insect-Resistant Bt Crops
The second major commercial biotechnology trait was insect resistance based on proteins from the bacterium Bacillus thuringiensis, commonly called Bt.
Bt produces insecticidal proteins that are active against particular susceptible insect groups.
Scientists introduced genes encoding selected Bt proteins into crops so that the plants could produce the insecticidal protein themselves.
Commercial Bt technology has been particularly important in:
Cotton
Eggplant/brinjal
Bt crops are designed to protect against specific target pests. They should therefore not be interpreted as being resistant to every insect that may attack a crop.
The effectiveness of Bt technology depends on:
The particular Bt protein
The target pest
Pest population
Crop variety
Environmental conditions
Resistance-management practices
The Development of Stacked Traits
As biotechnology developed, researchers began combining multiple traits within the same crop variety.
These are known as stacked traits.
For example, a maize variety may contain:
Bt insect resistance + herbicide tolerance
More advanced varieties can contain multiple insect-resistance proteins and more than one herbicide-tolerance trait.
Stacking can provide broader agricultural benefits, but it also makes appropriate stewardship increasingly important.
Farmers and regulators must consider:
Insect resistance
Herbicide resistance
Target-pest spectrum
Non-target effects
Seed management
Regulatory requirements
Expansion Beyond the Major Field Crops
Although soybean, maize, cotton, and canola have dominated global biotech crop cultivation, biotechnology has also been applied to several specialty crops.
Examples include:
Papaya
Potato
Squash
Sugar beet
Alfalfa
Apple
Eggplant/brinjal
These crops demonstrate that agricultural biotechnology is not limited to large-scale commodity crops.
For example, virus-resistant papaya was developed to address a serious disease problem in papaya production, while certain potato and apple varieties were developed with quality-related characteristics.
Bt brinjal represents another important example because the technology was developed specifically to address the eggplant fruit and shoot borer, a major pest of brinjal.
From GM Crops to Modern Precision Breeding
The agricultural biotechnology landscape has changed significantly since the first commercial GM crops.
The first generation of commercial biotechnology was largely associated with transgenic crops, in which a genetic construct was introduced into a crop to provide a desired characteristic.
Modern crop improvement now includes a much broader collection of technologies.
These include:
Genetic engineering
Marker-assisted selection
Genomic selection
CRISPR genome editing
Base editing
Prime editing
High-throughput phenotyping
Artificial intelligence
Machine learning
Digital agriculture
These technologies do not all produce the same type of genetic modification.
For example, a conventional transgenic crop may contain introduced genetic material, whereas some genome-editing approaches can make a targeted change to an existing gene without necessarily introducing foreign DNA.
Because national regulatory systems differ, gene-edited crops may also be regulated differently from conventional GM crops in some jurisdictions.
Why the Year 2019 Is an Important Benchmark
The year 2019 provides an important reference point for understanding the global history of commercialized biotech crops.
The ISAAA 2019 assessment reported:
190.4 million hectares of biotech crops
29 countries cultivating biotech crops
Up to 17 million farmers
Continued dominance of soybean, maize, cotton, and canola
Increasing participation of developing countries
The report also documented the continuing importance of insect resistance, herbicide tolerance, and stacked traits.
However, 2019 should now be viewed as a historical benchmark rather than the current global status.
The biotechnology landscape changed substantially after 2019, particularly with the expansion of genome editing, new regulatory approaches, additional crop approvals, and continued growth of GM cultivation in several countries.
Why a 2026 Update Is Necessary
An article that ends with 2019 does not provide readers with a complete picture of modern agricultural biotechnology.
Between 2020 and 2026, several important developments occurred.
These include:
Continued GM crop cultivation
GM soybean, maize, cotton, canola, and other crops continued to be cultivated commercially in major agricultural regions.
Expansion of GM crop approvals
Several countries expanded their lists of approved genetically engineered crops and traits.
Development of new traits
Research increasingly focused on:
Drought tolerance
Disease resistance
Improved nutritional characteristics
Improved processing quality
Climate resilience
Rapid growth of genome editing
CRISPR and related technologies became increasingly important in agricultural research and crop development.
New regulatory approaches
Countries began developing or refining regulatory frameworks for gene-edited crops.
Integration with AI
AI and machine learning increasingly became tools for analyzing genomic information, predicting breeding outcomes, identifying useful genetic variants, and improving crop selection.
These developments mean that the story of agricultural biotechnology can no longer be described only in terms of traditional GM crops.
GM Crops Are One Part of Modern Agricultural Biotechnology
It is important to distinguish between GM crop cultivation and the broader field of agricultural biotechnology.
GM crops are one component of a much larger technological ecosystem.
Modern crop improvement can involve:
Conventional breeding
↓
Marker-assisted breeding
↓
Genomics
↓
Genomic selection
↓
Genetic engineering
↓
CRISPR genome editing
↓
Base editing and prime editing
↓
AI-assisted precision breeding
These approaches can complement one another.
A modern breeding program may therefore use conventional breeding, molecular markers, genomic information, gene editing, and advanced computational tools together.
Looking Toward 2026 and Beyond
The future of crop biotechnology is likely to focus increasingly on traits that address emerging agricultural challenges.
Researchers are investigating crops with improved:
Drought tolerance
Heat tolerance
Disease resistance
Nutritional value
Nitrogen-use efficiency
Water-use efficiency
Pest resistance
Processing quality
Shelf life
The development of such crops will require more than technological capability.
Successful commercialization will also depend on:
Scientific evidence
Biosafety evaluation
Regulatory approval
Farmer acceptance
Consumer acceptance
Seed availability
Market demand
Economic feasibility
Environmental sustainability
Therefore, the future of biotechnology will be shaped by the interaction between science, agriculture, economics, regulation, and society.
Part 1 Summary
The commercialization of biotech crops began in 1996 with a relatively small cultivated area. Over the following decades, genetically engineered soybean, maize, cotton, canola, and other crops expanded into major agricultural systems around the world.
The principal early traits were herbicide tolerance and insect resistance, followed by stacked traits and specialized characteristics.
The 2019 ISAAA assessment provides an important historical benchmark, recording 190.4 million hectares of biotech crops across 29 countries.
However, agricultural biotechnology has continued to evolve rapidly since then. Modern crop improvement increasingly combines GM technology with genomics, CRISPR, base editing, prime editing, AI, and precision breeding.
The remainder of this article therefore examines the global transition from the 1996–2019 era of commercial GM crop expansion to the increasingly diverse biotechnology landscape of 2020–2026.
Part 2 – Global Biotech Crop Status in 2019
2019: A Major Milestone in the Global Adoption of Biotech Crops
The year 2019 represented an important milestone in the history of commercialized genetically modified (GM) and biotech crops.
By this time, biotechnology had moved far beyond its experimental stage and had become an established component of agricultural production in many countries.
According to the ISAAA 2019 global assessment, approximately 190.4 million hectares of biotech crops were planted worldwide across 29 countries.
This represented a substantial increase compared with the approximately 1.7 million hectares recorded when commercial biotech crop cultivation began in 1996.
The expansion over more than two decades demonstrated the increasing importance of biotechnology in modern crop production, particularly in large-scale cultivation of soybean, maize, cotton, and canola.
However, the global distribution of biotech crops was not uniform. A relatively small number of countries accounted for the majority of the world's cultivated biotech area, while many other countries either did not cultivate GM crops or permitted their importation for food, feed, or processing.
Global Biotech Crop Area in 2019
The estimated 190.4 million hectares planted with biotech crops in 2019 represented one of the largest areas recorded since commercial cultivation began.
The increase was associated with continued adoption of:
Herbicide-tolerant crops
Insect-resistant crops
Crops containing stacked traits
Improved biotech varieties suited to local production systems
The increase in area did not mean that every farmer adopted biotechnology at the same rate.
Adoption depended on several factors, including:
Crop economics
Pest pressure
Availability of suitable seed
Government regulations
Market access
Farmer preferences
Consumer demand
Export requirements
Environmental conditions
Consequently, biotechnology became highly concentrated in particular crops and agricultural regions.
The Four Dominant Biotech Crops
Four crops accounted for the overwhelming majority of global biotech crop cultivation in 2019:
Maize
Cotton
Canola
These crops have large global production systems and have received substantial investment in biotechnology research and breeding.
1. Biotech Soybean
Soybean was one of the most widely cultivated biotech crops globally.
The dominant trait historically has been herbicide tolerance.
Herbicide-tolerant soybean allowed farmers to use particular weed-management systems in which the crop could survive application of the relevant herbicide while susceptible weeds were controlled.
This technology became particularly important in countries with large-scale soybean production.
Major soybean-producing countries using biotech varieties included:
United States
Brazil
Argentina
Paraguay
Canada
Uruguay
Biotech soybean therefore became an important example of how biotechnology can become integrated into large-scale agricultural production.
2. Biotech Maize
Maize has been another major crop for agricultural biotechnology.
Biotech maize varieties have been developed with several traits, particularly:
Insect resistance
Herbicide tolerance
Stacked insect-resistance and herbicide-tolerance traits
Bt maize can provide protection against selected insect pests.
Depending on the product, target pests can include economically important maize insects such as corn borers and certain rootworm species.
The introduction of insect-resistant maize has been particularly important in regions where pest pressure is high.
Biotech maize is cultivated extensively in countries including:
United States
Brazil
Argentina
Canada
South Africa
Philippines
Spain
Portugal
Uruguay
The technology has therefore been used across both developed and developing agricultural systems.
3. Biotech Cotton
Cotton has been one of the most successful applications of insect-resistant biotechnology.
Bt cotton contains genes that allow the plant to produce insecticidal proteins active against certain important cotton pests.
The technology has been particularly significant in countries where insect pests historically caused substantial crop losses and required repeated insecticide applications.
Major countries cultivating biotech cotton include:
India
United States
China
Brazil
Pakistan
Argentina
South Africa
In countries such as India, Bt cotton became a major component of commercial cotton production.
The experience with Bt cotton also demonstrated that the benefits and challenges of biotechnology can vary according to local farming conditions.
4. Biotech Canola
Canola has also been an important biotech crop, particularly in North America.
Herbicide-tolerant canola varieties have been widely adopted in countries such as:
Canada
United States
Australia
The technology provided farmers with additional options for weed management and became integrated into large-scale canola production.
Canada has been particularly important in the development and commercialization of biotech canola.
Major Biotech Traits in 2019
The traits incorporated into biotech crops can be broadly divided into several categories.
Herbicide Tolerance
Herbicide tolerance was one of the most widely used biotech traits.
It was particularly important in:
Soybean
Maize
Cotton
Canola
The primary agricultural objective was improved weed management.
Insect Resistance
Insect resistance, particularly Bt technology, was another major trait.
Bt crops were designed to provide protection against specific insect pests.
Important Bt crops included:
Bt cotton
Bt maize
Bt brinjal in Bangladesh
Insect-resistant crops can potentially reduce the need for certain insecticide applications, although pest-management strategies must still be carefully implemented.
Stacked Traits
A major development by 2019 was the widespread use of stacked traits.
Instead of containing only one biotechnology trait, some crop varieties contained multiple traits within the same plant.
For example:
Insect resistance + herbicide tolerance
A stacked maize variety may therefore provide both protection against selected insect pests and compatibility with a particular weed-management system.
More complex stacks can contain multiple insect-resistance proteins and multiple herbicide-tolerance traits.
Stacked traits became particularly important in maize and cotton.
Developing Countries and Biotech Crop Adoption
One of the important features of global biotechnology adoption was the increasing participation of developing countries.
Biotech crops were not limited to North America and other highly industrialized agricultural economies.
By 2019, countries in:
Asia
Latin America
Africa
had become important producers of biotech crops.
This was significant because farmers in developing countries often face substantial challenges involving:
Insect pests
Crop diseases
Weed competition
Limited access to agricultural inputs
Climate variability
Production costs
Biotechnology was therefore adopted in some regions as one component of broader agricultural production strategies.
India and Biotech Crops in 2019
India provides an important example of the large-scale adoption of agricultural biotechnology.
The country's commercial cultivation of Bt cotton began in 2002.
By 2019, Bt cotton represented the overwhelming majority of India's cotton cultivation.
The technology was developed primarily to provide protection against important lepidopteran cotton pests.
The Indian experience also illustrates why biotechnology should be evaluated within a broader agricultural context.
The effects of Bt cotton can be influenced by:
Irrigation
Fertilizer use
Pest populations
Seed quality
Farming practices
Weather
Market prices
Resistance development
Therefore, the performance of a biotechnology trait cannot be separated completely from the production system in which it is used.
China
China was another major producer of biotech crops.
Biotechnology has been particularly important in cotton production.
Bt cotton was introduced to help control major cotton insect pests and reduce reliance on conventional insecticide-based pest management.
China has also invested heavily in agricultural biotechnology research.
In addition to commercial GM crops, the country has increasingly developed technologies involving:
Genome editing
Molecular breeding
Genomics
Advanced crop biotechnology
This growing research capacity became particularly important during the 2020s.
Brazil
Brazil emerged as one of the world's most important biotech crop-producing countries.
The country's large soybean, maize, and cotton industries provided favorable conditions for biotechnology adoption.
GM soybean and maize became major components of Brazilian agriculture.
Brazil's adoption of biotech crops is particularly important because the country is one of the world's major agricultural exporters.
Consequently, biotechnology has become connected not only to domestic production but also to international commodity markets.
Argentina
Argentina was among the early adopters of agricultural biotechnology.
Herbicide-tolerant soybean became particularly important in the country's agricultural system.
The widespread adoption of biotech soybean contributed to the development of large-scale, simplified production systems.
Argentina also became an important center for agricultural biotechnology research and innovation.
United States
The United States has historically been one of the largest producers of biotech crops.
By 2019, genetically engineered varieties were widely used in:
Soybean
Maize
Cotton
Canola
Sugar beet
Alfalfa
Adoption rates for major crops were extremely high.
The U.S. experience also demonstrates how biotechnology can become incorporated into an agricultural system over several decades.
Rather than representing a separate production method, GM varieties became part of mainstream commercial seed markets.
European Union: A Different Adoption Pattern
The European Union presents a contrasting example.
Although GM crops may be approved under the EU regulatory framework, cultivation has remained much more limited than in countries such as the United States, Brazil, Argentina, or Canada.
The principal commercial GM crop cultivated in the EU has been insect-resistant maize, particularly varieties designed to provide protection against important maize pests.
Spain has historically accounted for most of the EU's commercial GM maize cultivation.
Other EU countries have cultivated smaller areas or have restricted cultivation through national measures.
This difference demonstrates that regulatory approval does not necessarily result in widespread commercial adoption.
Farmer decisions are also influenced by:
Consumer attitudes
Market requirements
National policies
Retailer policies
Export markets
Political considerations
Spain and Bt Maize
Spain became the most significant European example of commercial GM crop cultivation.
Bt maize has been grown commercially in Spain for many years, particularly in areas affected by important maize insect pests.
The Spanish experience has been examined in several economic and environmental studies.
Research by Graham Brookes and other agricultural economists has evaluated issues including:
Crop yield
Production costs
Farm income
Insecticide use
Fuel use
Environmental effects
The long-term Spanish experience is therefore useful for understanding how a biotech crop can perform over multiple growing seasons.
Bangladesh and Bt Brinjal
Bangladesh provides another important example of biotechnology adoption in Asia.
Bt brinjal was developed to provide protection against the brinjal fruit and shoot borer, one of the most damaging insect pests of eggplant/brinjal.
Bangladesh became the first country to commercially cultivate Bt brinjal.
This case is particularly important because brinjal is an important vegetable crop for smallholder farmers and consumers.
The introduction of Bt brinjal therefore demonstrated that biotechnology was not limited to large commodity crops such as soybean and maize.
It also provided an important case study for evaluating:
Insecticide reduction
Farmer income
Fruit quality
Smallholder adoption
Food safety
Biosafety
Public acceptance
South Africa and Other African Countries
South Africa became one of the leading African countries in commercial cultivation of biotech crops.
Biotech maize, cotton, and soybean have played important roles in the country's agricultural system.
Bt maize has been particularly important in areas where insect pests can cause significant losses.
South Africa's experience also influenced biotechnology discussions elsewhere on the African continent.
During the following years, additional African countries began approving or expanding biotech crop cultivation, although adoption remained highly variable between countries.
The Global Distribution Was Highly Uneven
Although 29 countries cultivated biotech crops in 2019, the distribution of the approximately 190.4 million hectares was highly concentrated.
A relatively small group of countries accounted for most of the global biotech area.
This means that:
29 cultivating countries ≠ equal adoption across 29 countries.
The United States, Brazil, Argentina, Canada, India, Paraguay, China, Pakistan, South Africa, and several other countries represented major components of global cultivation.
In contrast, many countries had no commercial GM crop cultivation but still participated in biotechnology through:
Imports
Food processing
Animal feed
Research
Seed development
Regulatory assessment
This distinction becomes increasingly important when examining global biotechnology adoption.
Cultivation and Import Approval Are Not the Same
A country can have a biotechnology regulatory system that allows an approved GM crop to enter the country without allowing that crop to be commercially cultivated.
This distinction is often misunderstood.
There are therefore at least two different forms of participation in the global biotechnology system:
Cultivation adoption
The country permits farmers to grow an approved biotech crop.
Import or utilization adoption
The country permits an approved biotech crop or its products to be imported and used for food, feed, processing, or other purposes.
A country may therefore be a significant consumer or importer of GM commodities without growing GM crops commercially.
This difference becomes especially important in regions where domestic cultivation is restricted but imports of soybean meal, maize, or other commodities are permitted.
Economic Importance of Biotech Crops
By 2019, the widespread adoption of biotechnology had created a substantial agricultural and economic footprint.
The potential economic benefits of a biotech crop can arise through several mechanisms.
Increased yield
Protection against insects or other constraints can reduce crop losses and increase harvested yield under suitable conditions.
Reduced input costs
A reduction in certain pesticide applications or changes in weed-management practices can reduce some production costs.
Improved operational efficiency
Farmers may be able to simplify or modify particular crop-management operations.
Improved farm income
When additional revenue from yield gains exceeds additional technology and production costs, farm profitability can improve.
However, biotechnology does not guarantee higher profit in every situation.
Profitability depends on:
Yield × Crop price – Production costs = Farm return
Therefore, the economic outcome can vary according to local prices, pest pressure, seed costs, management practices, and environmental conditions.
Environmental Considerations
The environmental effects of biotech crops are also highly dependent on the specific crop and trait.
Potential benefits may include:
Reduced use of certain insecticides
Reduced fuel use from particular management systems
Compatibility with conservation tillage
Reduced crop losses
Potential land-use efficiency
At the same time, biotechnology can create or interact with environmental challenges.
Important concerns include:
Insect resistance
Herbicide-resistant weeds
Gene flow
Effects on non-target organisms
Biodiversity
Changes in pesticide-use patterns
For this reason, biotech crops require appropriate stewardship and resistance-management strategies.
The Importance of Farmer Adoption
The global expansion of biotech crops ultimately depends on whether farmers consider the technology useful within their production systems.
Farmers typically evaluate technologies according to practical considerations such as:
Expected yield
Pest pressure
Seed cost
Input savings
Crop price
Labor requirements
Market access
Risk reduction
Reliability
A biotechnology trait that provides little advantage under a particular farming condition may not be widely adopted even if it is technically successful.
Conversely, a technology that addresses a major local production constraint can achieve rapid adoption.
This explains why biotech crop adoption differs considerably between countries and even between regions within the same country.
2019 Global Benchmark at a Glance
| Indicator | 2019 status |
|---|---|
| Global biotech crop area | Approximately 190.4 million hectares |
| Countries cultivating biotech crops | 29 |
| Commercial era began | 1996 |
| Major crops | Soybean, maize, cotton, canola |
| Major traits | Herbicide tolerance, insect resistance, stacked traits |
| Major cultivation regions | Americas, Asia, Africa and limited EU cultivation |
| Major biotech cotton producers | India, China, USA, Brazil and others |
| Major biotech soybean producers | USA, Brazil, Argentina and others |
| Major biotech maize producers | USA, Brazil, Argentina, Canada and others |
| EU's principal commercial biotech crop | Insect-resistant maize |
| Important specialty example | Bt brinjal in Bangladesh |
Why the 2019 Data Cannot Be Treated as the Current Status
The 2019 figures provide an important historical baseline, but they should not be presented to readers as the global situation in 2026.
Since 2019, the biotechnology sector has continued to develop.
New developments include:
Additional GM crop approvals
Expansion or contraction of cultivation in individual countries
New biotech traits
Development of gene-edited crops
Changes in regulatory policies
Expansion of agricultural biotechnology research
Increased interest in climate-resilient crops
Greater integration of genomics and computational breeding
Therefore, the next sections of this article will move from the 2019 benchmark toward the more recent global data.
Part 2 Summary
In 2019, commercial biotech crops had become a major component of global agriculture, with approximately 190.4 million hectares planted across 29 countries, according to the ISAAA assessment.
Soybean, maize, cotton, and canola remained the dominant biotech crops, while herbicide tolerance, insect resistance, and stacked traits represented the major technology categories.
The United States, Brazil, Argentina, Canada, India, China, Paraguay, Pakistan, South Africa, and other countries represented important biotech-producing regions.
At the same time, Europe followed a substantially different adoption pathway, with commercial cultivation remaining limited and concentrated mainly in Spain.
The 2019 global picture therefore demonstrated two important realities:
First, biotech crops had become an established agricultural technology.
Second, adoption remained strongly dependent on national regulations, agricultural conditions, economics, markets, and public policy.
The next stage of the story is what happened after 2019—particularly during 2020–2024, when GM crop cultivation continued while genome editing and new forms of precision breeding began changing the biotechnology landscape.
Part 3 – Global Biotech Crop Developments: 2020–2024
Introduction
The period from 2020 to 2024 was an important transition phase for agricultural biotechnology.
At the beginning of this period, genetically modified crops were already well established in several major agricultural countries. Soybean, maize, cotton, and canola continued to account for most commercial GM crop cultivation.
However, the biotechnology landscape was changing.
Traditional GM technologies continued to be used, while genome editing, CRISPR, advanced molecular breeding, genomics, and precision agriculture gained increasing attention.
This period therefore represents a bridge between the first generation of commercial GM crops and the broader precision-breeding technologies that are becoming increasingly important in modern agriculture.
GM Crops Continued to Expand After 2019
The end of the 2010s did not represent the end of GM crop development.
During 2020–2024, farmers in major producing countries continued cultivating genetically engineered varieties of:
Soybean
Maize
Cotton
Canola
Sugar beet
Alfalfa
Papaya
Squash
Potato
Eggplant/brinjal
The actual area cultivated varied from country to country and from year to year.
Changes in planted area were influenced by:
Commodity prices
Weather
Pest pressure
Seed availability
Government policy
Regulatory approvals
Farmer demand
Export markets
Consequently, the global GM crop area should be understood as a dynamic agricultural indicator rather than a number that increases automatically every year.
Soybean Remained a Major Biotech Crop
Soybean continued to be one of the world's most important biotech crops during 2020–2024.
Herbicide-tolerant soybean varieties remained widely used in major soybean-producing countries.
The technology became closely integrated with large-scale soybean production systems in:
United States
Brazil
Argentina
Paraguay
Canada
Uruguay
In addition to herbicide tolerance, soybean biotechnology increasingly included stacked traits combining multiple characteristics.
The continued importance of biotech soybean demonstrates how a technology introduced during the first generation of GM crops can remain relevant for decades when it fits an established production system.
Brazil Continued to Be a Major Biotech Crop Producer
Brazil became increasingly important in the global biotechnology landscape.
The country's large agricultural sector includes extensive production of:
Soybean
Maize
Cotton
GM varieties became an important part of these production systems.
Brazil's importance is particularly significant because it is both a major agricultural producer and a major exporter.
Therefore, biotechnology adoption in Brazil has implications beyond domestic agriculture.
It can influence:
Global soybean supply
Feed markets
Vegetable oil markets
Commodity exports
International food and feed trade
United States: Continued High Adoption
The United States remained one of the world's leading users of genetically engineered crop varieties.
GE varieties continued to dominate production of several major crops, particularly:
Soybean
Maize
Cotton
The U.S. experience demonstrates the long-term integration of biotechnology into commercial agriculture.
By the 2020s, genetically engineered varieties were no longer considered a niche technology within these crops. They had become a standard component of the commercial seed market.
USDA data also continued to show very high adoption rates for GE soybean, maize, and cotton.
Cotton Biotechnology Continued to Be Important
Biotech cotton remained important in several countries during 2020–2024.
Bt cotton continued to provide protection against important insect pests, while stacked varieties combined insect resistance with herbicide tolerance.
Countries with substantial biotech cotton cultivation included:
India
United States
China
Brazil
Pakistan
South Africa
However, the long-term use of insect-resistant crops also highlighted an important biological challenge:
Insect Resistance
Insect populations can evolve resistance to insecticidal proteins when selection pressure is sufficiently strong.
This is why resistance management is an essential part of Bt crop stewardship.
Management strategies can include:
Refuges
Multiple modes of action
Monitoring pest populations
Appropriate crop management
Following regulatory stewardship requirements
The experience of Bt crops during this period reinforced an important lesson:
Biotechnology does not eliminate the need for integrated pest management.
Maize Remained a Major Biotech Crop
Biotech maize continued to be cultivated extensively during 2020–2024.
The major traits remained:
Insect resistance
Bt maize can protect against selected economically important insect pests.
Herbicide tolerance
Herbicide-tolerant maize provides farmers with additional weed-management options.
Stacked traits
Modern maize varieties may contain several biotechnology traits simultaneously.
This stacking trend is particularly important because it allows breeders to combine multiple characteristics within one commercial variety.
Canola and Other Oilseed Crops
Biotechnology also continued to play an important role in canola production.
Herbicide-tolerant canola remained widely cultivated, particularly in North America.
Canada has historically been a major producer of biotech canola.
The continued use of these varieties illustrates the long-term role of biotechnology in oilseed production.
The Importance of Specialty Biotech Crops
Although large-acreage commodity crops dominate global GM statistics, smaller-acreage biotech crops can have substantial agricultural or consumer importance.
Examples include:
Virus-resistant papaya
Bt brinjal
Insect-resistant potato
Quality-enhanced potato
Non-browning apple
Herbicide-tolerant alfalfa
Certain virus-resistant squash varieties
These products demonstrate that biotechnology can address problems other than simply increasing field-crop yield.
Bt Brinjal: A Significant Asian Example
Bt brinjal remained an important case study during this period.
Bangladesh's experience with Bt brinjal demonstrated that biotechnology could be applied to a vegetable crop grown extensively by small and medium-scale farmers.
The principal target was the brinjal fruit and shoot borer.
The technology was intended to reduce damage caused by the pest and potentially reduce reliance on repeated insecticide applications.
The experience generated interest in:
Farmer profitability
Fruit quality
Pesticide-use reduction
Food safety
Environmental effects
Smallholder biotechnology adoption
Bt brinjal therefore became an important example in discussions about whether biotech technologies could provide benefits beyond large commercial commodity crops.
Biotechnology and Food Quality
Another important development during this period was increasing attention to consumer-oriented traits.
Traditional GM crop development often focused on traits that primarily benefited farmers, such as insect resistance or herbicide tolerance.
Newer products increasingly explored characteristics that could provide benefits further along the food chain.
These may include:
Modified oil composition
Reduced browning
Improved processing characteristics
Reduced food waste
Altered nutritional composition
This represents an important change in the biotechnology landscape.
The question is no longer simply:
"Can biotechnology protect the crop?"
It increasingly includes:
"Can biotechnology improve the characteristics of the food produced from the crop?"
Food Safety Remained a Major Consideration
The expansion of biotechnology did not remove the need for safety assessment.
Genetically modified foods are evaluated using a range of scientific considerations.
Depending on the product and regulatory system, assessments can consider:
Toxicity
Allergenicity
Nutritional composition
Stability of the introduced genetic characteristic
Potential unintended effects
Environmental effects
The World Health Organization emphasizes that the safety of GM foods should be considered case by case, because different GM crops contain different genetic modifications and therefore cannot all be treated as a single category.
This is an important principle when discussing biotechnology with the public.
Environmental Assessment Continued to Be Important
During 2020–2024, environmental assessment remained a major component of biotechnology regulation.
Important considerations included:
Gene flow
Researchers and regulators may examine whether introduced genetic characteristics could move into related plants through pollen.
Non-target organisms
The effects of a crop's new trait on organisms other than the target pest may need to be evaluated.
Resistance development
Both insects and weeds can evolve resistance to agricultural technologies.
Biodiversity
Potential effects on agricultural and natural ecosystems must be considered.
Changes in pesticide use
Biotech traits may change the type, quantity, or timing of pesticide applications.
Therefore, environmental assessment is not simply a question of whether a crop is genetically engineered.
The relevant question is:
What specific crop, genetic modification, management system, environment, and receiving ecosystem are being evaluated?
The Rise of CRISPR
One of the biggest technological developments during 2020–2024 was the rapid expansion of CRISPR-based genome editing.
CRISPR provided researchers with a powerful method for making targeted changes to DNA.
Unlike conventional transgenic approaches, some CRISPR applications can modify an existing gene without introducing a permanent foreign gene into the final plant.
This opened new possibilities for:
Disease resistance
Improved nutritional characteristics
Plant architecture
Stress tolerance
Yield-related traits
Quality improvement
CRISPR therefore became one of the most important technologies in modern crop improvement.
GM Technology and Gene Editing Are Not Identical
It is important not to treat all modern biotechnology as synonymous with GM crops.
Traditional transgenic GM technology commonly involves introducing genetic material into a crop.
Gene editing, on the other hand, can make a targeted change to an existing DNA sequence.
Several gene-editing approaches have been developed, including:
CRISPR-Cas systems
Base editing
Prime editing
Other site-directed nuclease technologies
The final genetic characteristics of a plant can therefore differ substantially depending on the technology used.
This distinction became increasingly important during the 2020–2024 period because countries began developing different regulatory approaches to genome-edited crops.
Changes in Regulatory Approaches
One of the most important developments during this period was the emergence of different national approaches to gene-edited crops.
Some countries began distinguishing certain genome-edited plants from conventional transgenic GM organisms.
Other jurisdictions continued to regulate many gene-editing applications under existing GMO frameworks.
This resulted in a complex international regulatory landscape.
A crop developed using genome editing may therefore face different regulatory requirements depending on where it is intended to be cultivated or marketed.
This difference is becoming increasingly important for international agricultural biotechnology.
China Increased Its Focus on Agricultural Biotechnology
China continued investing heavily in agricultural biotechnology during this period.
Research expanded across areas such as:
Genetic engineering
Genome editing
Molecular breeding
Genomics
Crop stress tolerance
Disease resistance
China also developed regulatory pathways for certain agricultural biotechnology products.
This growing research capacity positioned China as an increasingly important participant in the global agricultural biotechnology sector.
India: Continued Bt Cotton and Growing Gene-Editing Research
India remained one of the world's major biotech crop-producing countries because of its extensive cultivation of Bt cotton.
At the same time, Indian agricultural research increasingly explored:
Genomics
Marker-assisted breeding
Genome editing
Molecular diagnostics
Precision breeding
This illustrates the broader transition occurring in agriculture.
Countries with established GM crops are not necessarily abandoning biotechnology.
Instead, many are adding newer tools to existing breeding programs.
Africa and Agricultural Biotechnology
African countries continued to explore biotechnology as a potential tool for improving agricultural productivity and food security.
South Africa remained an important producer of biotech crops.
Other African countries increasingly considered or approved biotechnology products during this period.
Important research priorities included:
Insect resistance
Disease resistance
Drought tolerance
Food security
Improved productivity
Climate resilience
However, adoption remained uneven because regulatory capacity, infrastructure, public perception, seed systems, and national policies differ substantially across countries.
Climate Change Increased Interest in Crop Biotechnology
Climate change became an increasingly important consideration in crop improvement.
Agriculture faces increasing pressure from:
Higher temperatures
Drought
Irregular rainfall
New pest distributions
Emerging diseases
Soil degradation
Water limitations
Biotechnology alone cannot solve these problems.
However, genetic technologies can contribute to breeding crops with useful stress-related characteristics.
Researchers therefore increasingly investigated:
Drought tolerance
Heat tolerance
Salinity tolerance
Disease resistance
Water-use efficiency
Nitrogen-use efficiency
This marked a shift from focusing primarily on pest and weed management toward broader agricultural resilience.
AI and Genomics Begin to Transform Breeding
Another major development during this period was the increasing use of computational technologies in plant breeding.
Large genomic datasets can contain enormous amounts of information about:
Genetic variation
Trait associations
Population structure
Disease resistance
Yield-related characteristics
Machine-learning methods can help researchers analyze these datasets and identify patterns that may be difficult to detect using conventional approaches alone.
AI therefore began emerging as a supporting technology for:
Genomic prediction
Trait discovery
Candidate-gene identification
Breeding decisions
Phenotyping
Experimental design
The combination of genomics + gene editing + AI is likely to become increasingly important in future crop improvement.
2020–2024: A Transition Between Two Eras
The period can therefore be understood as a transition between two major phases.
Earlier biotechnology era
1996–2019
Dominated by:
Bt crops
Herbicide tolerance
Stacked traits
Soybean
Maize
Cotton
Canola
Emerging precision-breeding era
2020–2024
Increasingly characterized by:
CRISPR
Genome editing
Base editing
Genomics
AI-assisted breeding
Climate-resilience traits
Consumer-oriented traits
New regulatory frameworks
The two eras are not mutually exclusive.
Traditional GM crops continued to be cultivated while newer technologies were being developed.
Why 2024 Is an Important Reference Point
By 2024, the global biotechnology landscape had become considerably more diverse than it was in 1996 or even 2019.
The technology was no longer simply about asking:
"How many hectares of GM crops are planted?"
A complete assessment increasingly requires examining:
Which crops are being cultivated?
Which traits are being used?
Which countries permit cultivation?
Which countries permit imports?
What new products have been approved?
What gene-editing technologies are being developed?
How are countries regulating them?
What economic benefits have been documented?
What environmental risks are being assessed?
How is biotechnology contributing to climate resilience?
These questions form the basis of the modern global biotechnology landscape.
Part 3 Summary
Between 2020 and 2024, conventional GM crops remained an important component of global agriculture.
Soybean, maize, cotton, and canola continued to dominate commercial biotech cultivation, while specialty products such as Bt brinjal, virus-resistant papaya, and quality-enhanced crops demonstrated the broader applications of biotechnology.
At the same time, a new generation of technologies gained momentum.
CRISPR, genome editing, base editing, genomics, AI, and precision breeding began expanding the possibilities available to crop breeders.
The period also highlighted the importance of biosafety, food safety, resistance management, environmental assessment, and regulatory differences between countries.
Thus, the biotechnology landscape entering 2025 was no longer simply a story about GM crops.
It had become a broader story about precision crop improvement.
The next section examines the latest global GM crop status for 2025, including the most recent reported global cultivated area, number of cultivating countries, major crops, and the changing balance between GM cultivation and newer gene-editing technologies.
Part 4 – Latest Global GM Crop Status: 2025 and the 2026 Perspective
Introduction
The global landscape of genetically modified (GM) crops continued to develop after the 2019 benchmark discussed in the previous sections.
The latest available global cultivation data provide an important update to the historical figures. According to the AgbioInvestor GM Monitor, approximately 216.0 million hectares of approved GM crops were cultivated in 2025 across 30 countries. This represented a 2.5% increase compared with 2024 and established a new record for global GM crop area in that dataset.
The 2025 data also show an important feature of modern GM agriculture: growth is no longer occurring uniformly across all crops.
Soybean, cotton, and canola contributed to the increase in global GM area, while the area planted with GM maize declined compared with the previous year.
This means that the global GM crop story is now more mature and complex than the rapid expansion seen during the early decades of commercialization.
216 Million Hectares of GM Crops in 2025
The AgbioInvestor 2025 global review reports:
216.0 million hectares
of GM crops cultivated worldwide.
This represented:
2.5% growth compared with 2024
A new record global GM crop area
30 countries cultivating approved GM crops
11 different GM crops grown commercially
The three largest GM crops were:
| Crop | GM area in 2025 |
|---|---|
| Soybean | 106.2 million ha |
| Maize | 74.6 million ha |
| Cotton | 22.6 million ha |
| Other GM crops | Approximately 12.6 million ha |
| Total | 216.0 million ha |
These figures demonstrate the continuing dominance of soybean, maize, and cotton in global GM cultivation.
Soybean Remains the World's Largest GM Crop
Soybean was the most widely cultivated GM crop in 2025.
Approximately:
106.2 million hectares
of GM soybean were planted globally.
This makes soybean the single largest GM crop by cultivated area.
The continued dominance of GM soybean is closely associated with the widespread use of herbicide-tolerant varieties and the integration of biotechnology into large-scale soybean production systems.
Major soybean-producing countries have adopted biotechnology extensively, particularly in the Americas.
The long-term adoption of GM soybean also demonstrates that once a technology becomes strongly integrated into seed markets, farm-management systems, and commodity production, it can remain important for many years.
GM Maize
GM maize remained the second-largest GM crop in 2025.
Approximately:
74.6 million hectares
of GM maize were cultivated globally.
GM maize includes varieties containing:
Insect resistance
Herbicide tolerance
Stacked traits
Combinations of multiple insect-resistance traits
However, the 2025 data showed that global GM maize area declined compared with 2024.
This is an important reminder that the global GM area does not necessarily increase every year for every crop.
Changes in maize area can be influenced by:
Commodity prices
Weather
Planting decisions
Seed availability
Regulatory conditions
Farmer economics
Crop rotation
Pest pressure
GM Cotton
Cotton was the third-largest GM crop in 2025.
Approximately:
22.6 million hectares
were planted with GM cotton.
Bt cotton remains particularly important because it provides protection against selected insect pests.
Herbicide-tolerant and stacked cotton varieties have also contributed to the development of modern cotton production systems.
Major cotton-producing countries with GM adoption include:
India
United States
China
Brazil
Pakistan
South Africa
Argentina
The continued use of Bt cotton also makes resistance management an important component of sustainable biotechnology stewardship.
Other GM Crops
Although soybean, maize, and cotton dominate the global statistics, GM technology is used in additional crops.
Commercial GM cultivation has included crops such as:
Canola
Sugar beet
Alfalfa
Papaya
Squash
Potato
Eggplant/brinjal
Cowpea
The exact number and type of crops cultivated differs between countries.
Some of these crops occupy relatively small areas compared with soybean or maize but can have significant local importance.
A New GM Crop Example: Cowpea in Ghana
One notable development in the 2025 global picture was the addition of Ghana as a GM-crop cultivating country.
AgbioInvestor reports that Ghana began cultivating GM cowpea in 2025, making it the most recent country added to the list of countries cultivating GM crops in that dataset.
This is significant because cowpea is an important food and nutritional crop in parts of Africa.
GM cowpea technology has been developed to address important insect-pest constraints.
Its adoption demonstrates how agricultural biotechnology is increasingly being applied to crops that are important for regional food systems rather than only globally traded commodities.
From 29 Countries in 2019 to 30 in 2025
The number of countries cultivating GM crops can change over time.
The 2019 ISAAA assessment reported:
29 cultivating countries
The AgbioInvestor 2025 assessment reports:
30 cultivating countries
However, these figures should not be interpreted simply as a continuous increase from 29 to 30.
Countries can:
Begin cultivating GM crops
Stop cultivation
Resume cultivation
Change the crops they cultivate
Restrict particular technologies
Approve new crops
Permit imports without cultivation
Therefore, the number of cultivating countries is only one indicator of global biotechnology adoption.
Cultivation Is Different From Import Approval
One of the most important developments in understanding the modern global biotechnology landscape is the distinction between cultivation and import/use approval.
A country may permit a GM crop to be imported for:
Food
Animal feed
Processing
without allowing farmers to cultivate that crop domestically.
The latest ISAAA 2024 report provides a particularly useful perspective.
ISAAA reported that since 1996:
73 countries have integrated GM crops into their agricultural systems.
Of these:
44 countries have adopted GM crops through cultivation
29 countries have adopted them through imports
This demonstrates that the global biotechnology system is considerably larger than the group of countries actually growing GM crops.
ISAAA's 2024 Report Released in 2026
An important point for readers is that 2024 global data and the publication date of the report are different things.
ISAAA released Brief 57: Global Status of Commercialized Biotech/GM Crops in 2024 on February 27, 2026.
The report covers the 2024 agricultural situation but was published in 2026.
Therefore, this article should not describe the ISAAA 2024 report as a 2026 cultivation dataset.
Instead, it should be described accurately as:
"ISAAA's Global Status of Commercialized Biotech/GM Crops in 2024, released in 2026."
This distinction is important when presenting scientific and agricultural statistics.
Developing Countries Have Become Increasingly Important
The global geography of biotechnology has also changed significantly.
According to ISAAA's latest assessment, developing countries accounted for the majority of global biotech/GM crop plantings during the 2012–2024 period.
ISAAA reports that:
Five industrialized countries accounted for approximately 43% of global biotech/GM plantings.
Twenty-six developing countries accounted for approximately 57%.
This represents an important change from the earlier period when industrialized countries were the main drivers of biotech crop adoption.
The shift highlights the growing importance of biotechnology in developing-country agricultural systems.
Why Are Developing Countries Increasingly Using GM Crops?
Several factors may contribute to biotechnology adoption in developing countries.
Food security
Countries may use biotechnology to address domestic crop-production challenges.
Pest pressure
Insect-resistant crops can be particularly valuable where pest damage is severe.
Production economics
Farmers may adopt technologies that provide favorable returns under local conditions.
Climate resilience
Some newer biotechnology products are being developed to address environmental stresses.
Import dependence
Countries that depend heavily on imported food or feed may consider biotechnology as one strategy for improving domestic production.
Farmer demand
Ultimately, technologies must provide sufficient practical value for farmers to adopt them.
Asia and Oceania
Asia remains an important region for agricultural biotechnology.
ISAAA's 2024 regional data reported approximately:
20.81 million hectares
of biotech crop area in Asia and Oceania in 2024.
Important biotech crops in the region include:
Cotton
Maize
Soybean
Eggplant/brinjal
Other regionally important crops
Countries such as India, China, Bangladesh, Pakistan, and the Philippines have played different roles in the development and adoption of agricultural biotechnology.
However, regulatory systems differ substantially between countries.
The United States: More Than 90% Adoption in Major Crops
The United States continues to demonstrate the mature stage of GM crop adoption.
According to updated USDA Economic Research Service data covering 2025, more than 90% of U.S. corn, upland cotton, and soybeans are produced using genetically engineered varieties.
For 2025 specifically:
Approximately 96% of U.S. soybean acreage used herbicide-tolerant varieties.
Approximately 93% of U.S. upland cotton acreage used herbicide-tolerant varieties.
Approximately 92% of U.S. corn acreage used herbicide-tolerant varieties.
These figures demonstrate how deeply biotechnology has become integrated into U.S. crop production.
Herbicide Tolerance Remains Important
Although agricultural biotechnology has expanded into many new traits, herbicide tolerance remains one of the most widely used biotechnology characteristics.
USDA identifies herbicide-tolerant and insect-resistant varieties as the major categories used in its U.S. adoption statistics.
Herbicide-tolerant crops allow farmers to use specific herbicides for weed management while the crop is designed to tolerate the relevant herbicide.
Common herbicide-tolerance systems include tolerance to herbicides such as:
Glyphosate
Glufosinate
Dicamba
The use of multiple herbicide-tolerance systems has also contributed to increasingly complex weed-management programs.
Bt Technology Remains Important
Insect-resistant Bt crops also continue to play a major role.
Bt crops contain genes derived from the soil bacterium Bacillus thuringiensis that allow the plant to produce insecticidal proteins active against selected pests.
USDA notes that Bt and herbicide-tolerant traits remain the most commonly used GE traits in U.S. crop production, even though other traits have also been developed.
This illustrates an important point:
New biotechnology does not automatically replace older biotechnology.
A technology can remain commercially important when it continues to provide useful agricultural benefits.
New Traits Are Emerging
Although herbicide tolerance and Bt insect resistance continue to dominate commercial cultivation, researchers are developing a broader range of traits.
Examples include:
Virus resistance
Fungal disease resistance
Drought tolerance
Altered nutritional composition
Modified protein content
Modified oil composition
Vitamin-related traits
Quality characteristics
USDA specifically identifies virus and fungal resistance, drought resistance, and enhanced protein, oil, or vitamin characteristics among other GE traits that have been developed.
These technologies may become increasingly important as agriculture faces changing environmental and nutritional demands.
GM Crops and Climate Change
Climate change is changing the priorities of agricultural biotechnology research.
Traditional commercial GM technology often focused on:
Pests + weeds
Modern biotechnology increasingly adds:
Climate + nutrition + disease + resource efficiency
Potential future targets include:
Heat tolerance
Drought tolerance
Salinity tolerance
Water-use efficiency
Nitrogen-use efficiency
Disease resistance
Improved photosynthetic efficiency
However, not every promising laboratory trait becomes a successful commercial product.
A trait must demonstrate:
Biological effectiveness
Agronomic performance
Stability
Safety
Economic value
Regulatory acceptability
Farmer and market acceptance
The GM Landscape Is Becoming More Diverse
The global biotechnology sector is therefore moving in several directions simultaneously.
Established technologies
Bt insect resistance
Herbicide tolerance
Stacked traits
Expanding applications
Disease resistance
Quality improvement
Nutritional traits
Climate-related traits
Emerging technologies
CRISPR
Base editing
Prime editing
Advanced genome engineering
AI-assisted breeding
These technologies should not be considered direct substitutes in every case.
Instead, they represent a growing toolbox available to plant breeders and agricultural researchers.
2025 Global GM Crop Status at a Glance
| Indicator | 2025 status |
|---|---|
| Global GM crop area | 216.0 million hectares |
| Annual change | +2.5% |
| Countries cultivating approved GM crops | 30 |
| Number of GM crops cultivated | 11 |
| GM soybean | 106.2 million ha |
| GM maize | 74.6 million ha |
| GM cotton | 22.6 million ha |
| New cultivating country in 2025 | Ghana |
| New GM crop example | GM cowpea |
| Largest GM crop | Soybean |
Source: AgbioInvestor GM Crop Area Review 2025.
2024 and 2025 Data Should Not Be Mixed
Readers should be careful when comparing global GM crop statistics from different organizations.
For example:
ISAAA Brief 57
reports on 2024 and was released in 2026.
AgbioInvestor GM Monitor
reports 2025 global cultivation data and gives a total of 216.0 million hectares.
USDA ERS
provides detailed U.S. adoption data through 2025, rather than a global GM acreage estimate.
These datasets have different purposes and methodologies.
Therefore, a scientifically responsible article should always state:
the year of the data + the organization providing the estimate + what the number actually measures.
What Does the 2025 Record Mean?
The 216.0-million-hectare figure demonstrates that GM crops remain an important part of global agriculture.
However, it does not mean that every GM crop is increasing.
The 2025 data show a more mature pattern:
Soybean ↑
Cotton ↑
Canola ↑
Maize ↓
Overall GM area ↑ 2.5%
This is different from the rapid expansion observed during the early years of biotechnology.
As major agricultural markets mature, future growth may increasingly come from:
New countries
New crops
New traits
Climate-resilient products
Consumer-oriented products
Improved regulatory systems
The 2026 Perspective
As of 2026, agricultural biotechnology should therefore be understood as a broad and rapidly evolving field.
Commercial GM crops remain highly important, with more than 200 million hectares cultivated globally in 2025 according to AgbioInvestor.
At the same time, the biotechnology pipeline is expanding beyond conventional GM traits.
Researchers are increasingly working with:
CRISPR genome editing
Base editing
Prime editing
Genomic selection
High-throughput phenotyping
Artificial intelligence
Molecular diagnostics
Precision breeding
The future global status of biotechnology will therefore depend on both the continued cultivation of established GM crops and the commercialization of newer precision-breeding technologies.
Part 4 Summary
The latest available global cultivation data show that GM crops remain a major component of modern agriculture.
In 2025, approximately 216.0 million hectares of approved GM crops were cultivated across 30 countries, according to AgbioInvestor. Soybean was the largest GM crop at 106.2 million hectares, followed by maize at 74.6 million hectares and cotton at 22.6 million hectares.
At the same time, the latest ISAAA assessment provides a broader view of biotechnology adoption. Its 2024 report, released in 2026, identifies 73 countries that have integrated GM crops into their agricultural systems since 1996, with 44 adopting through cultivation and 29 through imports.
The global picture has therefore become more diverse.
GM crops remain highly established in the Americas and other major agricultural regions, while developing countries have become increasingly important contributors to global GM cultivation.
Meanwhile, newer traits and technologies—including climate-related traits, CRISPR, gene editing, genomics, and AI-assisted breeding—are expanding the definition of modern agricultural biotechnology.
The next section will examine the major GM crops and traits individually, explaining why soybean, maize, cotton, canola, Bt crops, herbicide-tolerant crops, and stacked-trait varieties have become so important in global agriculture.
Part 5 – Major Commercial GM Crops and Traits
Introduction
Genetically modified crops are not a single type of technology. Different crops have been modified to provide different characteristics, depending on the agricultural problem that breeders and researchers are trying to address.
Some GM crops are designed to resist insect pests. Others are engineered to tolerate particular herbicides. Some combine several traits in a single variety, while newer products focus on disease resistance, nutritional characteristics, quality improvement, or environmental stresses.
Among commercially cultivated GM crops, soybean, maize, cotton, and canola account for the overwhelming majority of the global cultivated area.
Understanding these crops and their traits is therefore essential for understanding the global biotechnology industry.
1. GM Soybean
Soybean is the world's largest commercial GM crop by cultivated area.
The dominant biotechnology characteristic in soybean has historically been herbicide tolerance.
Herbicide-tolerant soybean varieties were developed to provide farmers with additional options for controlling weeds during crop production.
Why Was Herbicide-Tolerant Soybean Developed?
Weeds compete with soybean plants for:
Water
Light
Nutrients
Growing space
Severe weed competition can reduce soybean yield.
Before herbicide-tolerant soybean became widely available, farmers had to rely on combinations of herbicides, mechanical weed control, cultivation practices, and other management techniques.
Herbicide-tolerant varieties provided another approach.
The soybean plant is genetically engineered so that it can tolerate a particular herbicide system, while susceptible weeds are controlled by the herbicide.
Herbicide-Tolerant Soybean and Weed Management
The major advantage is not that the soybean plant becomes inherently stronger against weeds.
Instead, the technology changes the weed-management system.
Farmers can apply an appropriate herbicide while the soybean crop remains tolerant to that herbicide.
This can simplify weed control and provide greater flexibility in large-scale production systems.
However, herbicide tolerance does not eliminate the need for good weed management.
Repeated dependence on the same herbicide mode of action can select for resistant weed populations.
Therefore, modern weed management increasingly emphasizes:
Herbicide rotation
Multiple modes of action
Appropriate application timing
Crop rotation
Cultural practices
Mechanical control where appropriate
Monitoring for resistant weeds
2. GM Maize
Maize is the second-largest GM crop globally.
Commercial GM maize varieties may contain:
Insect resistance
Herbicide tolerance
Multiple stacked traits
Maize is particularly important because it is cultivated across a wide range of environments and is used for:
Human food
Animal feed
Industrial processing
Biofuel production
Bt Maize
One of the most important applications of biotechnology in maize is Bt insect resistance.
Bt maize contains genes derived from Bacillus thuringiensis that allow the plant to produce insecticidal proteins active against specific susceptible insect pests.
Depending on the Bt protein and crop variety, the technology can target important maize pests.
Examples include certain:
Corn borers
Rootworms
Lepidopteran pests
The exact spectrum of protection depends on the particular Bt trait.
How Bt Maize Works
The Bt protein is produced within the plant.
When a susceptible insect feeds on plant tissue containing an active Bt protein, the protein can interact with the insect's digestive system.
The resulting biological effects can cause feeding cessation and ultimately death of susceptible insects.
The important point is that Bt traits are generally target-specific compared with broad-spectrum chemical insecticides, although environmental assessment remains necessary for each particular product and ecosystem.
Benefits of Bt Maize
Bt maize can provide several potential agricultural benefits.
Reduced crop damage
Protection from susceptible insect pests can reduce feeding damage.
Yield protection
When pest pressure is significant, reduced insect damage can help protect yield.
Reduced insecticide applications
In some production systems, Bt crops have reduced the need for certain insecticide treatments.
Easier pest management
Farmers can incorporate Bt protection into an integrated pest-management program.
However, the actual benefits vary according to:
Pest pressure
Local climate
Farming practices
Crop variety
Pest resistance
Input prices
Therefore, biotechnology benefits should always be evaluated under specific production conditions.
3. GM Cotton
Cotton is another major commercial GM crop.
The two major biotechnology characteristics in cotton have been:
Bt insect resistance
and
herbicide tolerance.
Bt cotton became particularly important because insect pests can cause substantial economic damage to cotton.
Bt Cotton
Bt cotton plants produce insecticidal proteins derived from Bacillus thuringiensis.
The proteins target susceptible insect pests.
Farmers therefore obtain a form of genetic protection against important pests without having to depend entirely on foliar insecticide applications.
The technology has been adopted extensively in several cotton-producing countries.
India is particularly important because Bt cotton became the country's dominant commercial biotech crop.
Bt Cotton in India
India provides one of the world's most important examples of large-scale adoption of a Bt crop.
Bt cotton was introduced commercially in India in the early 2000s.
Over time, adoption expanded dramatically.
The technology became an important component of cotton production, particularly because of pressure from bollworm pests.
However, the Indian experience also illustrates why biotechnology must be combined with responsible crop management.
Insect resistance, secondary pests, seed quality, farming practices, rainfall, input costs, and market conditions can all influence cotton productivity and farmer profitability.
Therefore, Bt cotton should not be considered a stand-alone solution to every cotton-production problem.
Resistance Management in Bt Crops
One of the most important lessons from decades of Bt crop cultivation is the importance of resistance management.
When a population of insects is repeatedly exposed to the same insecticidal mechanism, individuals carrying resistance-associated characteristics may survive and reproduce.
Over generations, resistant insects can become more common.
This process is called evolution of resistance.
To delay resistance development, stewardship programs may use:
Refuge strategies
Multiple Bt proteins
Pyramided traits
Pest monitoring
Integrated pest management
Appropriate regulatory requirements
The exact strategy depends on the crop, pest, Bt trait, and country.
4. GM Canola
Canola is another major GM crop, particularly important in Canada and other agricultural regions.
Herbicide-tolerant canola varieties have been widely adopted.
The principal systems have included tolerance to different herbicides, giving farmers additional options for weed management.
Canola is particularly significant because it is an important source of:
Vegetable oil
Animal feed
Protein-rich meal
Industrial raw materials
Why Herbicide-Tolerant Canola Became Popular
Canola production can be affected by a wide range of weeds.
Herbicide-tolerant varieties can simplify weed management and provide farmers with additional flexibility.
However, as with herbicide-tolerant soybean and maize, weed resistance remains an important stewardship issue.
Farmers therefore increasingly rely on integrated approaches rather than repeatedly using a single herbicide system.
5. Herbicide-Tolerant Crops
Herbicide tolerance is one of the most widely used categories of agricultural biotechnology.
The basic principle is relatively simple.
A crop is modified so that it can tolerate a specific herbicide or herbicide system.
The herbicide is then used to control susceptible weeds while the crop survives.
This approach has been incorporated into soybean, maize, cotton, canola, sugar beet, and other crops.
Advantages of Herbicide-Tolerant Technology
Potential advantages include:
Improved weed control
Farmers can control weeds during crop growth using compatible herbicide systems.
Management flexibility
Farmers may have more options for timing and method of weed control.
Reduced mechanical cultivation
In some systems, effective herbicide-based weed management can reduce the need for repeated mechanical cultivation.
Conservation agriculture compatibility
Reduced tillage systems can be combined with herbicide-tolerant crops in appropriate production systems.
Farm-level efficiency
Simplified weed-control programs can reduce labor and machinery requirements in some farming systems.
Herbicide Resistance: An Important Challenge
The widespread use of herbicide-tolerant crops has also highlighted the importance of herbicide resistance.
Weed populations naturally contain genetic variation.
When a herbicide repeatedly eliminates susceptible plants, resistant individuals may survive.
If these plants reproduce, the frequency of resistance can increase.
Eventually, a herbicide that previously provided effective control may become less effective.
This is why herbicide-tolerant crops should be incorporated into integrated weed-management programs.
Recommended principles may include:
Rotate herbicide modes of action
Use mixtures when appropriate
Avoid unnecessary repeated applications
Rotate crops
Prevent weed seed production
Monitor fields for suspected resistance
Combine chemical and non-chemical weed-control methods
6. Stacked GM Traits
Modern GM crops frequently contain more than one biotechnology trait.
These are known as stacked traits.
For example, a maize variety may combine:
Herbicide tolerance
Bt protection against one insect group
Bt protection against another insect group
A cotton variety may similarly contain combinations of insect-resistance and herbicide-tolerance traits.
Why Are Traits Stacked?
Stacking allows breeders to combine multiple characteristics in one commercial product.
Instead of requiring farmers to grow separate varieties for different traits, a single variety can potentially provide multiple functions.
For example:
One seed → insect protection + herbicide tolerance
or:
One seed → protection against multiple insect pests
This can simplify crop management and provide broader protection.
Pyramided Bt Traits
A special form of stacking is the use of multiple Bt proteins targeting the same pest.
This approach is sometimes called a Bt pyramid.
The purpose is to make it more difficult for an insect population to survive exposure through resistance to a single Bt protein.
If the proteins have different modes of action against the target pest, an insect carrying resistance to one protein may still be susceptible to another.
However, pyramiding does not eliminate resistance risk.
Proper stewardship and monitoring remain essential.
7. Virus-Resistant Crops
Not all biotechnology traits involve insects or herbicides.
Some crops have been engineered for resistance to plant viruses.
A well-known example is virus-resistant papaya.
Papaya production in Hawaii was severely affected by papaya ringspot virus.
A genetically engineered papaya variety containing virus-derived genetic material was developed to provide resistance.
This became an important example of biotechnology being used to address a specific disease problem rather than simply increasing yield.
8. Insect-Resistant Brinjal
Bt brinjal represents an important example of biotechnology in a vegetable crop.
The technology was developed to provide protection against the brinjal fruit and shoot borer, a major pest of eggplant/brinjal.
Bangladesh became the first country to commercially cultivate Bt brinjal.
The technology is particularly interesting because brinjal is an important food crop and is cultivated by many smallholder farmers.
Potential benefits include:
Reduced pest damage
Improved marketable fruit
Reduced insecticide use against the target pest
Lower production costs in suitable conditions
Potential improvement in farmer profitability
However, as with all agricultural technologies, results depend on local farming conditions and management practices.
9. Quality-Enhanced GM Crops
Agricultural biotechnology has also been used to modify food quality.
Some products have been developed to address characteristics such as:
Browning
Oil composition
Processing properties
Nutritional characteristics
Food waste
This category is particularly important because it shifts biotechnology beyond the traditional farmer-focused traits.
A crop can potentially be modified to provide benefits to:
Farmers + processors + retailers + consumers
10. Nutritional Biotechnology
Another important area is the modification of crops to improve nutritional characteristics.
Scientists have investigated traits related to:
Vitamins
Minerals
Protein quality
Amino-acid composition
Oil composition
The objective is to improve the nutritional value or functional properties of food crops.
However, nutritional claims require careful scientific evaluation.
A modified nutritional trait must be evaluated not only for the intended change but also for potential unintended effects on the overall nutritional composition.
11. Climate-Related Traits
Climate change is creating new priorities for agricultural biotechnology.
Breeders are increasingly interested in crops that can maintain productivity under environmental stress.
Potential targets include:
Drought tolerance
Improving crop performance under limited water availability.
Heat tolerance
Maintaining reproductive and physiological functions during high temperatures.
Salinity tolerance
Improving crop performance in salt-affected soils.
Disease resistance
Reducing losses from diseases that may become more important under changing climatic conditions.
Nitrogen-use efficiency
Potentially improving crop productivity while reducing dependence on nitrogen inputs.
These traits are scientifically promising, but their development and commercialization can take many years.
12. GM Crops and Sustainable Agriculture
Biotechnology should not be viewed independently from agricultural management.
A GM crop can be one component of a larger production system.
Sustainable agriculture may involve combining biotechnology with:
Crop rotation
Integrated pest management
Soil conservation
Efficient irrigation
Biological control
Responsible fertilizer management
Resistance management
Precision agriculture
The sustainability of a particular GM crop therefore depends on how the technology is used, not simply on the fact that the crop is genetically modified.
Comparison of Major Commercial GM Traits
| Trait | Main purpose | Example crops | Major consideration |
|---|---|---|---|
| Herbicide tolerance | Weed management | Soybean, maize, cotton, canola | Herbicide resistance |
| Bt insect resistance | Insect-pest control | Maize, cotton, brinjal | Insect resistance |
| Virus resistance | Disease protection | Papaya, squash | Virus biology and durability |
| Stacked traits | Multiple benefits | Maize, cotton, soybean | Stewardship complexity |
| Quality traits | Food/processing improvement | Potato, apple, soybean | Consumer and market acceptance |
| Nutritional traits | Improved composition | Selected crops | Nutritional assessment |
| Stress-related traits | Environmental resilience | Emerging crops | Field performance |
Traditional GM Crops and New Gene Editing
The commercial biotechnology landscape is now moving beyond the traditional GM model.
Traditional GM crops often involve introducing a genetic sequence that provides a new characteristic.
Gene-editing technologies can instead make targeted modifications to a plant's existing genome.
Technologies include:
CRISPR-Cas
Base editing
Prime editing
TALENs
Zinc-finger nucleases
These technologies offer breeders a wider range of possibilities.
For example, researchers may be able to:
Disable an undesirable gene
Modify gene activity
Change a specific DNA base
Introduce targeted mutations
Improve disease resistance
Modify plant architecture
The regulatory treatment of these products differs among countries.
Why the Distinction Matters
A common misconception is that every modern biotechnology crop is simply a "GM crop."
Scientifically, this is too broad.
There are important differences between:
Transgenic modification
and
Genome editing
and
Conventional mutation breeding
and
Marker-assisted selection
and
Genomic selection
All are tools for crop improvement, but they operate differently.
Modern plant breeding increasingly combines several of these technologies rather than relying on only one.
The Future Commercial Pipeline
The next generation of agricultural biotechnology is likely to contain products targeting a much broader range of agricultural challenges.
Potential areas include:
Drought tolerance
Heat tolerance
Disease resistance
Nitrogen-use efficiency
Improved photosynthesis
Improved nutritional quality
Reduced food waste
Improved shelf life
Enhanced oil quality
Climate resilience
CRISPR and other gene-editing technologies may accelerate the development of some of these traits.
However, scientific discovery is only the first step.
A successful commercial crop must also pass appropriate:
Safety → regulatory → agronomic → economic → market acceptance
stages.
Key Takeaway
The history of commercial GM crops can be summarized as a progression.
First generation:
Insect resistance and herbicide tolerance.
↓
Second generation:
Stacked traits and broader pest-management systems.
↓
Third generation:
Quality, nutritional, disease-resistance, and stress-related traits.
↓
Emerging generation:
CRISPR, gene editing, base editing, AI-assisted breeding, and precision crop improvement.
The important point is that agricultural biotechnology is not standing still.
The crops that dominate global GM cultivation today are the result of technologies developed decades ago, while the next generation of crop improvement is being shaped by genome editing, genomics, artificial intelligence, and increasingly precise molecular breeding.
Part 5 Summary
Soybean, maize, cotton, and canola remain the central crops in global GM agriculture. Herbicide tolerance and Bt insect resistance continue to account for a large proportion of commercial GM traits, while stacked varieties provide multiple characteristics within the same crop.
At the same time, biotechnology is expanding into virus resistance, nutritional improvement, food quality, climate resilience, and disease management.
The major challenge for the future is not simply developing new traits. It is ensuring that these technologies are scientifically validated, safely regulated, economically useful, environmentally responsible, and appropriately managed in farmers' fields.
This broader perspective is essential for understanding why GM crops remain important while newer gene-editing technologies are rapidly entering the agricultural research pipeline.
Part 6 – Major Countries Growing Commercial GM Crops
Introduction
The global adoption of genetically modified crops is not evenly distributed.
A relatively small group of countries accounts for most commercial GM crop cultivation, while many other countries permit GM crops mainly for food, feed, processing, research, or import purposes.
The reasons for these differences include:
Agricultural priorities
Pest pressure
Farm size
Seed systems
Regulatory frameworks
Public perception
Trade relationships
Environmental considerations
Government policy
Farmer demand
Understanding the country-wise distribution of GM crops is therefore essential for interpreting the global biotechnology landscape.
United States
The United States has been one of the world's most important adopters of agricultural biotechnology since the commercial introduction of GM crops in the 1990s.
GM varieties are extensively used in:
Soybean
Maize
Cotton
Canola
Sugar beet
Alfalfa
The United States also has a highly developed biotechnology research and seed industry.
According to USDA Economic Research Service data, genetically engineered varieties account for more than 90% of U.S. soybean, maize, and upland cotton acreage.
This demonstrates the exceptionally high level of integration of biotechnology into American agriculture.
U.S. Soybean
Soybean provides one of the clearest examples of mature biotechnology adoption.
Herbicide-tolerant soybean varieties dominate the U.S. soybean production system.
Farmers use these varieties as part of weed-management programs.
Over time, soybean biotechnology has expanded beyond a single herbicide-tolerance system.
Commercial varieties can now contain combinations of different herbicide-tolerance characteristics and other traits.
This reflects the broader trend toward stacked traits.
U.S. Maize
GM maize is also extensively cultivated in the United States.
Commercial maize varieties may contain:
Herbicide tolerance
Bt insect resistance
Multiple Bt proteins
Stacked insect and herbicide traits
The combination of traits allows farmers to address several production challenges using a single commercial hybrid.
However, responsible management remains important.
Insect resistance and herbicide-resistant weeds are continuing challenges that require integrated management.
U.S. Cotton
Biotechnology has also become a standard component of U.S. cotton production.
Commercial cotton varieties may combine:
Bt insect resistance
Herbicide tolerance
The use of Bt cotton can reduce damage caused by susceptible insect pests, while herbicide tolerance can provide additional weed-management options.
The U.S. experience illustrates how biotechnology can become integrated into an entire agricultural production system rather than functioning as an isolated technology.
Brazil
Brazil is another major global biotechnology crop producer.
The country has become particularly important because of its enormous production of:
Soybean
Maize
Cotton
GM soybean is extensively cultivated, while biotech maize and cotton also occupy substantial areas.
Brazil's importance extends beyond domestic agriculture.
It is a major exporter of agricultural commodities, meaning that biotechnology adoption in Brazil can influence international food, feed, and commodity markets.
GM Soybean in Brazil
Soybean is one of Brazil's most important agricultural commodities.
Herbicide-tolerant soybean varieties have been widely adopted.
Farmers benefit from weed-management systems compatible with these varieties.
The development of additional stacked traits has further expanded the range of biotechnology products available to Brazilian producers.
GM Maize in Brazil
Brazil is also a major producer of biotech maize.
GM maize varieties may contain:
Bt insect resistance
Herbicide tolerance
Stacked traits
The importance of insect-resistant maize is particularly relevant because insect pests can cause substantial yield losses under favorable conditions.
As in other countries, however, the long-term effectiveness of Bt technology depends on appropriate resistance-management practices.
Argentina
Argentina has been an important adopter of agricultural biotechnology since the early commercial era.
GM soybean became a major part of Argentine agriculture.
Biotech crops in Argentina have included:
Soybean
Maize
Cotton
Argentina's large-scale soybean production has made it an important participant in international agricultural biotechnology.
Paraguay
Paraguay is another significant adopter of GM crops in South America.
Soybean is particularly important to the country's agricultural economy.
Biotech soybean varieties are widely associated with the country's commercial soybean production system.
The Paraguayan example demonstrates that biotechnology adoption is not limited to the world's largest agricultural economies.
Canada
Canada is one of the world's major producers of biotech crops.
The country's biotechnology adoption has been particularly important in:
Canola
Maize
Soybean
Canada is especially well known for its extensive use of herbicide-tolerant canola.
GM Canola in Canada
Canola is a major Canadian agricultural commodity.
Herbicide-tolerant varieties have become deeply integrated into Canadian production systems.
The technology provides farmers with additional weed-control options.
However, Canada has also provided an important example of why stewardship is necessary.
The repeated use of herbicide-tolerant systems can contribute to selection for herbicide-resistant weeds.
Consequently, modern weed management increasingly emphasizes:
Crop rotation
Herbicide rotation
Multiple modes of action
Integrated weed management
Prevention of weed-seed production
India
India is one of the world's most important countries for GM cotton cultivation.
Bt cotton became commercially available in India in the early 2000s and was rapidly adopted.
India's biotechnology experience is unusual because:
Bt cotton is commercially cultivated, while most other GM food crops have not received equivalent commercial cultivation status.
This makes India's regulatory environment particularly important in discussions about agricultural biotechnology.
Bt Cotton and Indian Agriculture
Bt cotton was developed primarily to provide protection against important bollworm pests.
Its adoption was associated with major changes in India's cotton-production system.
However, cotton productivity depends on many factors beyond biotechnology, including:
Rainfall
Irrigation
Soil fertility
Pest pressure
Seed quality
Agronomic practices
Input costs
Market prices
Therefore, biotechnology should not be treated as the sole explanation for changes in cotton productivity or farmer income.
Bangladesh
Bangladesh is particularly important because it became the first country to commercially cultivate Bt brinjal.
Bt brinjal was developed to protect the crop against the brinjal fruit and shoot borer.
This is significant because brinjal is an important vegetable crop for food and rural livelihoods.
The Bangladesh experience has been widely studied in relation to:
Farmer adoption
Pest control
Insecticide use
Fruit quality
Production economics
Food safety
Environmental effects
Bt brinjal therefore provides an important case study of biotechnology applied to a vegetable crop rather than a large-scale commodity crop.
Philippines
The Philippines has been an important adopter of agricultural biotechnology in Southeast Asia.
Biotech maize has been cultivated commercially in the country for many years.
The country has also developed regulatory frameworks covering agricultural biotechnology and more recently genome-edited crops.
The Philippines is particularly important in the Asian biotechnology landscape because it combines:
Commercial GM crop cultivation
Agricultural biotechnology research
Biosafety regulation
Gene-editing research
China
China has invested heavily in agricultural biotechnology research.
Its research programs cover:
Genetic engineering
Molecular breeding
Genome editing
Genomics
Disease resistance
Insect resistance
Stress tolerance
China has historically been a major producer of biotech cotton and has also developed significant research capacity in other crops.
The country's large agricultural sector means that changes in Chinese biotechnology policy could have major implications for global agriculture.
China and Gene Editing
China has also become an important center for genome-editing research.
Scientists are investigating CRISPR and other molecular technologies for:
Disease resistance
Yield improvement
Stress tolerance
Quality traits
Plant architecture
Nutritional improvement
This reflects a broader global trend in which biotechnology research is moving beyond traditional transgenic crops.
Pakistan
Pakistan is another major adopter of biotech cotton.
Bt cotton has been widely cultivated as part of the country's cotton-production system.
The technology is intended to provide protection against important insect pests.
However, Pakistan's experience also demonstrates the importance of:
Quality seed
Resistance management
Pest monitoring
Farmer education
Integrated pest management
Technology alone cannot guarantee stable agricultural outcomes.
South Africa
South Africa has been a long-term adopter of GM crops and has played an important role in biotechnology adoption on the African continent.
Commercial biotech crops have included:
Maize
Soybean
Cotton
South Africa's experience is particularly important because it demonstrates how biotechnology can become integrated into agricultural production in an African context.
Africa: A Changing Biotechnology Landscape
For many years, commercial GM crop cultivation in Africa was concentrated in a relatively small number of countries.
However, the situation has gradually changed.
African countries have increasingly evaluated biotechnology as a potential tool for:
Food security
Pest management
Climate resilience
Crop productivity
Nutritional improvement
The introduction of GM cowpea in Ghana in 2025 was an important recent development.
It demonstrates that the range of commercially cultivated GM crops is expanding beyond the traditional soybean-maize-cotton model.
European Union
The European Union has a very different biotechnology landscape from the Americas.
The EU has historically maintained a more restrictive and complex regulatory approach toward GM crops.
Although GM food and feed imports are permitted under specific conditions, commercial cultivation is much more limited.
GM maize has been cultivated in certain EU countries, particularly Spain, but cultivation remains relatively small compared with countries such as the United States or Brazil.
Spain
Spain has historically been the most important EU country for commercial cultivation of Bt maize.
Bt maize was adopted because of its protection against important maize pests, particularly the European corn borer.
Spain therefore provides an important example of how a GM crop can be cultivated commercially within the European regulatory environment.
However, the scale remains small compared with major GM-producing countries outside Europe.
Why Is GM Cultivation Limited in Europe?
Several factors contribute to the relatively limited cultivation of GM crops in Europe.
These include:
Regulatory requirements
National and regional restrictions
Political differences
Public attitudes
Market considerations
Consumer preferences
Agricultural policy
Importantly, European restrictions on cultivation do not mean that European countries are completely isolated from GM technology.
The EU imports substantial quantities of agricultural commodities used for food, feed, and processing.
European GM Imports Versus Cultivation
This distinction is particularly important.
A country can:
Import GM soybean → use it for animal feed → but not cultivate GM soybean domestically.
Therefore:
Cultivation
The crop is grown by farmers within the country.
Import approval
The country permits a GM commodity to enter its market under regulatory conditions.
These are separate policy decisions.
Australia
Australia has also developed a significant agricultural biotechnology sector.
Commercial GM crops have included:
Canola
Cotton
GM canola has become an important part of Australian agriculture in approved production areas.
Australia also has substantial research programs in:
Plant biotechnology
Molecular breeding
Genomics
Gene editing
Uruguay
Uruguay has adopted GM soybean and maize technologies.
The country's agricultural sector is strongly connected to international commodity markets.
Biotechnology has therefore become part of its soybean and maize production systems.
Colombia
Colombia has also cultivated GM crops, particularly maize and cotton.
The country provides another example of biotechnology adoption in Latin America.
Honduras
Honduras has cultivated biotech maize and is one of the countries where GM maize has been integrated into agricultural production.
Its adoption is particularly relevant to the broader Central American biotechnology landscape.
Vietnam
Vietnam has developed commercial cultivation of biotech maize.
The country has considered biotechnology as one tool for improving agricultural productivity and managing pest pressure.
Vietnam's experience is significant because it demonstrates the gradual expansion of GM crop adoption in Southeast Asia.
Country-Wise Comparison
| Country | Major commercial biotech crops | Main traits/characteristics |
|---|---|---|
| United States | Soybean, maize, cotton, canola | Herbicide tolerance, Bt, stacked traits |
| Brazil | Soybean, maize, cotton | Herbicide tolerance, Bt, stacked traits |
| Argentina | Soybean, maize, cotton | Herbicide tolerance, insect resistance |
| Canada | Canola, maize, soybean | Herbicide tolerance, stacked traits |
| India | Cotton | Bt insect resistance |
| Bangladesh | Brinjal | Bt insect resistance |
| Philippines | Maize | Bt, herbicide tolerance |
| China | Cotton and other crops | Bt and emerging biotechnology |
| Pakistan | Cotton | Bt insect resistance |
| South Africa | Maize, soybean, cotton | Bt, herbicide tolerance |
| Australia | Canola, cotton | Herbicide tolerance, insect resistance |
| Spain | Maize | Bt insect resistance |
| Uruguay | Soybean, maize | Herbicide tolerance, Bt |
| Colombia | Maize, cotton | Bt, herbicide tolerance |
| Vietnam | Maize | Bt, herbicide tolerance |
| Ghana | Cowpea | Insect resistance |
The exact crop portfolio and regulatory status can change over time; country-level approvals should therefore be checked against current national regulatory authorities.
Why Country Differences Matter
The global biotechnology landscape demonstrates that scientific capability alone does not determine whether a GM crop becomes commercially successful.
A technology may be scientifically effective but still face challenges related to:
Regulation
Public acceptance
Seed distribution
Market access
Export requirements
Farmer economics
Environmental concerns
This explains why the same GM technology may be widely adopted in one country but absent from another.
Regulation Is Country-Specific
There is no single worldwide GM-crop approval system.
Different countries have different regulatory frameworks.
Regulators may assess:
Food safety
Whether the crop or derived food presents unacceptable risks.
Environmental safety
Potential effects on ecosystems and biodiversity.
Molecular characteristics
The inserted or modified genetic material and its expression.
Allergenicity
Whether the modification creates a meaningful new allergenic concern.
Nutritional composition
Whether the crop differs nutritionally in an unintended way.
Gene flow
Potential movement of genetic material to compatible plants.
The details and terminology vary between jurisdictions.
The Role of International Trade
International trade makes biotechnology regulation more complicated.
A country may prohibit domestic cultivation while importing GM commodities.
For example, animal-feed industries may depend on imported soybean meal or maize even when domestic cultivation of GM crops is restricted.
This creates a distinction between:
Production policy
and
Trade policy.
Therefore, global GM agriculture cannot be understood simply by counting countries that grow GM crops.
The Global Pattern
The overall global pattern can be summarized broadly as follows:
Americas
High commercial adoption.
Asia
Mixed but expanding adoption.
Africa
Growing adoption and regulatory development.
Europe
Limited commercial cultivation but substantial interaction with imported GM commodities.
Oceania
Commercial adoption in selected crops and countries.
This regional variation is one of the defining characteristics of agricultural biotechnology.
Major Commercial GM Crop Countries: Overall Pattern
The largest global cultivation areas are concentrated in countries with:
Large agricultural land areas
Major soybean, maize, or cotton production
Established seed industries
Regulatory approval for GM crops
Strong farmer demand
Export-oriented agriculture
This explains why the United States, Brazil, Argentina, Canada, India, and other major agricultural producers appear repeatedly in global GM crop statistics.
Important Lesson From Global Adoption
The history of GM crops demonstrates that commercial adoption is a combination of science, economics, policy, and farming reality.
A genetically engineered crop must not only work biologically.
It must also:
Provide a useful trait.
Perform reliably in the field.
Be economically attractive.
Receive regulatory approval.
Fit the local farming system.
Have access to an appropriate seed-distribution system.
Meet market requirements.
Gain sufficient farmer acceptance.
Only when these conditions align can a biotechnology product achieve widespread commercial adoption.
Part 6 Summary
Global GM crop cultivation remains concentrated in a relatively small number of major agricultural countries.
The United States, Brazil, Argentina, Canada, India, China, Pakistan, South Africa, Australia, and several other countries have played important roles in the commercial development and adoption of biotechnology.
However, the type of crop and trait differs substantially between countries.
The Americas remain the center of large-scale soybean, maize, and cotton biotechnology, while Asia has developed important systems around cotton, maize, and Bt brinjal.
Africa is becoming increasingly important as additional countries evaluate and adopt biotechnology for food-security and agricultural challenges.
Europe remains a special case, with limited commercial cultivation but significant participation in international trade involving GM commodities.
The global picture therefore cannot be described simply as "countries that accept GM crops" versus "countries that reject them."
Instead, countries occupy different positions across a spectrum:
Research → Field testing → Import approval → Food/feed use → Commercial cultivation → Export
This spectrum is essential for understanding the true global status of agricultural biotechnology.
The next section examines the economic, environmental, and farmer-level impacts of GM crop adoption, including yield, pesticide use, production costs, farmer income, greenhouse-gas emissions, and the major criticisms surrounding these claims.
Part 7 – Economic, Environmental and Agricultural Impacts of GM Crops
Introduction
The commercial adoption of genetically modified crops has generated extensive research on their effects on agricultural productivity, farm income, pesticide use, fuel consumption, greenhouse-gas emissions, and resource use.
The effects are not identical everywhere.
The outcome of a GM crop depends on:
Crop species
GM trait
Target pest or weed
Local climate
Pest pressure
Farming system
Seed price
Input prices
Crop prices
Resistance development
Farmer management practices
Therefore, the benefits of GM technology should be evaluated using evidence from individual crops and production systems rather than assuming that every GM crop produces the same result.
1. Effect on Crop Yield
One of the main reasons farmers adopt GM crops is the potential to protect yield.
Insect-resistant crops can reduce losses caused by susceptible insect pests.
For example, Bt maize and Bt cotton can protect plants from important insect pests when those pests are present at economically damaging levels.
Similarly, effective weed management in herbicide-tolerant crops can reduce competition between weeds and crops.
However, GM technology does not automatically increase the genetic yield potential of every crop.
A useful distinction is:
Yield potential
versus
Yield protection.
An insect-resistant crop may produce a similar potential yield to a conventional variety under low pest pressure, but it may retain more of that yield when pest pressure becomes severe.
2. Farmer Income
The economic effect of GM crops is an important part of adoption decisions.
Farmer profitability depends on both additional revenue and additional costs.
A simplified calculation is:
Net economic benefit = Additional crop revenue − Additional technology and management costs
Additional revenue may result from:
Higher yield
Better-quality harvested produce
Reduced crop losses
Potential cost savings may result from:
Lower insecticide use
Reduced weed-control costs
Lower labor requirements
Reduced machinery operations
Reduced fuel consumption
However, farmers also pay for GM seed technology.
Therefore, a GM crop is economically attractive only when the overall benefits compensate for the additional technology cost.
3. GM Crops and Pesticide Use
One of the most frequently discussed environmental effects of GM crops is pesticide use.
The answer depends strongly on the trait.
Bt Crops
Bt crops can reduce the need for some insecticide applications directed against susceptible target pests.
The reduction can be particularly important when pest pressure is high.
Herbicide-Tolerant Crops
Herbicide-tolerant crops have a different effect.
They may simplify weed control, but their effect on total herbicide use depends on:
Herbicide system
Application rate
Weed spectrum
Number of applications
Weed resistance
Farming practices
Therefore, it is incorrect to assume that every GM crop automatically reduces pesticide use.
4. Insecticide Reduction
Bt technology has provided some of the clearest examples of reduced insecticide use.
The crop itself produces a Bt protein targeting susceptible pests.
This can reduce the requirement for external insecticide treatments against those pests.
The effect is especially relevant in crops such as:
Cotton
Maize
However, Bt crops do not provide protection against every insect species.
Farmers may still need to manage:
Secondary pests
Non-target pests
Insects outside the Bt spectrum
Emerging resistance
Integrated pest management therefore remains important.
5. Herbicide Use
The environmental impact of herbicide-tolerant crops is more complex.
Herbicide-tolerant technology can allow farmers to use effective post-emergence weed-control systems.
In some systems, this has supported conservation or reduced-tillage agriculture.
However, repeated reliance on a single herbicide or mode of action can increase selection pressure for resistant weeds.
This can eventually lead to:
Reduced herbicide effectiveness
Additional herbicide applications
Increased management costs
Greater dependence on alternative herbicides
Additional weed-control measures
Consequently, the long-term sustainability of herbicide-tolerant crops depends heavily on resistance management.
6. Herbicide-Resistant Weeds
Herbicide resistance is one of the major challenges associated with modern crop production.
The process can be explained simply.
Step 1
A weed population contains natural genetic variation.
Step 2
A herbicide kills susceptible plants.
Step 3
A small number of resistant plants survive.
Step 4
The survivors produce seeds.
Step 5
The frequency of resistant weeds increases.
Step 6
The herbicide gradually becomes less effective.
This is an evolutionary process rather than a unique property of GM crops.
However, widespread adoption of herbicide-tolerant systems can increase selection pressure when herbicides are used repeatedly without adequate rotation or diversification.
7. Greenhouse-Gas Emissions
Agricultural biotechnology can also influence greenhouse-gas emissions.
Potential mechanisms include:
Reduced fuel consumption
Fewer tractor passes
Reduced soil disturbance
Improved crop productivity
Reduced insecticide applications
Greater adoption of conservation agriculture
For example, herbicide-tolerant crops may facilitate reduced-tillage systems in some agricultural regions.
Reduced tillage can decrease the amount of fuel required for field operations.
However, the actual climate benefit varies according to local farming practices.
8. Conservation Agriculture
Conservation agriculture generally emphasizes principles such as:
Reduced soil disturbance
Soil cover
Crop diversification
Herbicide-tolerant crops have sometimes facilitated reduced-tillage systems by providing farmers with effective weed-control options without repeated mechanical cultivation.
This can provide potential benefits such as:
Lower fuel consumption
Reduced soil erosion
Improved soil structure
Greater retention of soil moisture
Reduced machinery requirements
However, conservation agriculture does not require GM crops.
Farmers can use other weed-management approaches depending on their production system.
9. Water Use and Water Productivity
Water availability is becoming increasingly important as agriculture faces climate variability and increasing demand for water.
Biotechnology may contribute indirectly to water productivity through:
Improved pest protection
Reduced crop losses
Stress-tolerance traits
Improved yield stability
However, most currently dominant commercial GM traits were not specifically designed to reduce irrigation requirements.
Therefore, claims about GM crops and water savings should be evaluated carefully and crop by crop.
10. Food and Feed Security
GM crops can contribute to food and feed production by reducing losses from insects and weeds.
This can be particularly important in regions where pest pressure is high.
For example:
Insect pressure → crop damage → yield loss
Bt protection can interrupt this pathway:
Bt trait → reduced target-pest damage → improved yield protection
The significance of this effect depends on the pest and the local production environment.
11. GM Crops and Land Use
Increasing agricultural productivity on existing farmland can potentially reduce pressure to convert additional land for crop production.
This is sometimes referred to as a land-saving effect.
The basic concept is:
Higher productivity per hectare → potentially less land required for the same total production
However, land-use outcomes depend on broader economic forces.
Higher farm profitability can sometimes encourage agricultural expansion.
Therefore, land-saving claims require careful economic and environmental analysis rather than assuming that higher yield automatically prevents land conversion.
12. Farmer Labor and Machinery
Some GM technologies can reduce the amount of labor or machinery required for specific operations.
For example, effective weed-control systems may reduce the number of mechanical cultivation operations.
This can result in:
Lower tractor hours
Lower fuel use
Reduced labor requirements
Lower machinery wear
The economic importance of these savings depends on local labor costs, machinery costs, field size, and production practices.
13. GM Crops and Smallholder Farmers
The impact of GM technology on smallholder farmers is particularly important in developing countries.
Smallholder farmers may face:
Limited access to irrigation
High pest pressure
Limited access to machinery
Expensive pesticides
Labor shortages
Variable market prices
A technology that reduces crop losses or pesticide applications may therefore have significant economic value.
However, adoption also requires:
Affordable seed
Reliable seed quality
Farmer training
Appropriate agronomic practices
Access to markets
Resistance-management knowledge
Technology access is therefore as important as technology development.
14. Environmental Benefits Are Trait-Specific
It is important not to describe GM crops as universally beneficial or universally harmful.
Different traits produce different environmental effects.
| Technology | Potential benefit | Major consideration |
|---|---|---|
| Bt insect resistance | Reduced target-pest damage and some insecticide use | Resistance development |
| Herbicide tolerance | Flexible weed management | Herbicide-resistant weeds |
| Virus resistance | Reduced disease losses | Durability of resistance |
| Stress-related traits | Potentially improved resilience | Field performance |
| Nutritional traits | Improved nutritional characteristics | Nutritional assessment |
| Stacked traits | Multiple benefits | More complex stewardship |
This trait-specific approach provides a more scientifically accurate understanding of agricultural biotechnology.
15. Non-Target Organisms
A common environmental question is whether GM crops affect organisms other than the intended target.
This issue is particularly relevant for insect-resistant crops.
Environmental assessments can consider potential effects on:
Beneficial insects
Pollinators
Soil organisms
Predators
Parasitoids
Other organisms exposed to the crop
The potential impact depends on the specific protein, crop, organism, exposure level, and environmental conditions.
Therefore, non-target effects must be evaluated for individual products rather than generalized across all GM crops.
16. Biodiversity Considerations
The relationship between GM crops and biodiversity is complex.
A GM crop may reduce certain pesticide applications, potentially reducing chemical exposure in an agricultural ecosystem.
On the other hand, large-scale monoculture, intensive agriculture, and loss of natural habitats can negatively affect biodiversity regardless of whether a crop is genetically modified.
Therefore:
GM technology ≠ monoculture
and
GM technology ≠ biodiversity loss by itself.
Biodiversity is influenced by the entire agricultural landscape.
17. Gene Flow
Gene flow refers to the movement of genetic material between populations.
For GM crops, regulators may evaluate the possibility of gene flow to:
Related cultivated varieties
Wild relatives
Volunteer plants
The significance of gene flow depends on the biology of the crop.
Important factors include:
Presence of compatible relatives
Pollination mechanism
Flowering period
Geographic distribution
Trait characteristics
Appropriate management and regulatory measures may therefore be required.
18. Food Safety Assessment
Before a GM crop is approved for food or feed use in regulated markets, authorities may evaluate multiple characteristics.
Assessment can include:
Molecular characterization
Nutritional composition
Toxicological considerations
Allergenicity
Intended trait
Potential unintended changes
The exact regulatory process varies by country.
A scientific assessment therefore needs to distinguish between:
approved products
and
experimental products.
19. Public Concerns
Despite extensive commercial adoption, GM crops remain controversial in some societies.
Common public concerns include:
Food safety
Environmental effects
Biodiversity
Gene flow
Corporate control of seeds
Farmer dependence
Herbicide use
Insect resistance
Labeling
Consumer choice
These concerns should be considered separately from scientific questions about whether a particular GM product has been evaluated and approved.
20. Corporate Concentration and Seed Markets
Another major issue concerns the structure of the agricultural seed industry.
Modern biotechnology requires significant investment in:
Gene discovery
Molecular biology
Transformation
Breeding
Field testing
Regulatory assessment
Seed production
These costs can contribute to concentration within the commercial seed industry.
Concerns about intellectual property and access to biotechnology are therefore part of the broader economic debate surrounding GM crops.
This is different from evaluating whether a particular GM crop is biologically safe.
Both questions are important, but they should not be confused.
21. Resistance Management Is Essential
Long-term sustainability is one of the central challenges of agricultural biotechnology.
Both major commercial GM systems can experience resistance.
Insect resistance
Target insects can evolve resistance to Bt proteins.
Herbicide resistance
Weeds can evolve resistance to herbicides used with herbicide-tolerant crops.
This means that biotechnology should be considered a component of integrated crop management, rather than a replacement for agricultural knowledge.
22. Integrated Pest Management
Integrated Pest Management, or IPM, combines multiple approaches to manage agricultural pests.
These may include:
Biological control
Cultural practices
Resistant varieties
Crop rotation
Monitoring
Chemical control
Biotechnology
GM crops can therefore be incorporated into IPM rather than used independently.
For example:
Bt crop + pest monitoring + refuge strategy + biological control
can provide a more sustainable management system than relying on a single control method.
23. What Do the Major Impact Studies Show?
Large-scale economic studies have generally reported that commercially adopted GM crops have generated substantial aggregate benefits for farmers in many production systems.
Research by agricultural economists such as Graham Brookes and Peter Barfoot has examined:
Farm income
Yield effects
Pesticide use
Carbon emissions
Fuel savings
Production impacts
Their analyses have reported substantial cumulative economic and environmental benefits from GM crop adoption.
However, these studies are best interpreted as estimates based on specific datasets, assumptions, and methodologies.
Results should not be interpreted as proof that every farmer, crop, or country experiences identical benefits.
24. The Spain and Portugal Example
The long-term cultivation of Bt maize in Spain provides an important European case study.
Research examining the adoption of insect-resistant maize has evaluated:
Yield effects
Farm income
Insecticide use
Production costs
Environmental effects
The Spanish experience is particularly valuable because it represents long-term commercial cultivation within the European regulatory environment.
It also demonstrates that the economic impact of a biotechnology trait depends on local pest pressure and agricultural conditions.
25. Economic Benefits Must Be Measured at Farm Level
A technology can be scientifically effective but economically unattractive if its additional cost is greater than its benefit.
Farm-level analysis should therefore consider:
Seed cost
Pesticide cost
Labor
Machinery
Yield
Crop price
=
Farm profitability
This is why biotechnology adoption is ultimately influenced by farmer economics.
26. Balanced Interpretation of GM Crop Benefits
A scientifically responsible discussion should avoid two extremes.
Extreme 1
"GM crops solve all agricultural problems."
This is incorrect.
Extreme 2
"GM crops provide no agricultural benefits."
This is also inconsistent with the extensive evidence from commercial cultivation.
A more accurate conclusion is:
GM crops can provide substantial benefits when the particular trait addresses an important agricultural problem and the technology is properly managed.
At the same time, they have limitations and can introduce new management challenges.
27. Overall Assessment
The evidence from commercial agriculture indicates that GM crops have had measurable effects on:
Crop protection
Farm productivity
Farmer income
Insecticide use
Weed management
Fuel consumption
Agricultural greenhouse-gas emissions
The magnitude of these effects varies widely.
The strongest benefits generally occur when the engineered trait directly addresses a significant production constraint.
Examples include:
Bt cotton → bollworm protection
Bt maize → protection from susceptible insect pests
Herbicide-tolerant soybean → weed-management flexibility
Virus-resistant papaya → protection against papaya ringspot virus
These examples demonstrate an important principle:
The value of biotechnology comes from solving a specific biological or agricultural problem.
Part 7 Summary
GM crops have influenced modern agriculture through several mechanisms.
Insect-resistant crops can reduce damage from susceptible pests and may reduce insecticide applications.
Herbicide-tolerant crops can simplify weed management and, in some production systems, facilitate conservation agriculture.
These technologies can contribute to farm income, production efficiency, and resource savings.
However, biotechnology also presents management challenges.
Insect resistance, herbicide-resistant weeds, gene flow, biodiversity concerns, market acceptance, regulatory requirements, and seed-market structure all require continued attention.
The most appropriate conclusion is therefore neither unconditional support nor unconditional rejection.
A scientifically balanced assessment recognizes that:
GM crops are tools.
Their benefits and limitations depend on the crop, trait, environment, farming system, regulatory framework, and management strategy.
The next section will examine global GM crop statistics and adoption trends, including how the cultivated area has changed over time, which crops dominate the global GM landscape, and how commercial biotechnology has evolved from the 1990s to the present.
Part 8 – Global GM Crop Adoption: From 1996 to the Present
Introduction
The commercial history of genetically modified crops began in the mid-1990s.
The first major wave of commercial adoption focused primarily on two characteristics:
Herbicide tolerance
Insect resistance
Since then, agricultural biotechnology has expanded across continents and crop species.
The global GM crop area has increased dramatically compared with the early years of commercialization, although adoption has not followed the same pattern in every country.
The history of GM crop adoption can therefore be divided into several broad phases:
1996–2000 → Early commercialization
2001–2010 → Rapid international expansion
2011–2020 → Widespread adoption and trait stacking
2021 onward → Increasing diversification and gene-editing transition
1. Beginning of Commercial GM Crop Cultivation
Commercial cultivation of GM crops began in the 1990s.
The United States was one of the earliest and most important markets.
The first commercially important crops included:
Soybean
Maize
Cotton
Canola
The principal traits were herbicide tolerance and insect resistance.
These technologies addressed two of the most persistent agricultural problems:
Weeds
and
Insect pests
2. The Early Adoption Phase
During the first years of commercialization, farmers gradually evaluated the new technologies under practical field conditions.
Adoption was influenced by:
Yield protection
Pest pressure
Weed-control requirements
Seed costs
Farm size
Availability of alternative technologies
Regulatory approval
As farmers gained experience and biotechnology products became more widely available, adoption increased in several major agricultural countries.
3. Expansion Beyond the United States
GM crop cultivation soon expanded beyond North America.
Countries in South America became particularly important.
Major adopters included:
Argentina
Brazil
Paraguay
Uruguay
Soybean became one of the most important crops driving this expansion.
Large-scale soybean production combined with herbicide-tolerant technology created a production system that was particularly suitable for large-scale commercial farming.
4. Expansion of GM Maize
Maize biotechnology expanded rapidly alongside soybean.
Commercial maize varieties were developed with:
Bt insect resistance
Herbicide tolerance
Stacked traits
The combination of insect protection and weed-management flexibility made biotech maize an important component of modern maize production.
Countries including the United States, Brazil, Argentina, Canada, South Africa, and others became important producers of biotech maize.
5. Expansion of Bt Cotton
Cotton became another major biotechnology success story.
Bt cotton was adopted in several countries because insect pests can cause serious economic damage to cotton.
Major countries associated with commercial Bt cotton cultivation have included:
India
United States
China
Pakistan
Argentina
South Africa
The technology has been particularly important in regions where bollworms and other susceptible pests cause significant losses.
6. Rapid Increase in Global Adoption
As more countries approved biotechnology crops, the global cultivated area increased substantially.
The increase was driven mainly by four crops:
Soybean
Maize
Cotton
Canola
Together, these crops account for the overwhelming majority of global GM cultivation.
This concentration is important.
GM agriculture is not evenly distributed across all crops.
Instead, biotechnology has been particularly successful in crops where a clear agricultural problem could be addressed with a commercially useful trait.
7. Why Soybean Became a Major GM Crop
Several factors contributed to the rapid adoption of GM soybean.
Soybean is cultivated extensively for:
Vegetable oil
Protein meal
Animal feed
Food products
Industrial applications
Large-scale soybean production also created strong demand for efficient weed management.
Herbicide-tolerant soybean provided farmers with a relatively simple way to integrate biotechnology into existing production systems.
8. Why Maize Became a Major GM Crop
Maize is affected by numerous insects and weeds.
Insect-resistant maize can protect against important target pests.
Herbicide-tolerant maize provides additional weed-management options.
Stacked maize varieties can combine several traits.
This makes maize particularly suitable for multi-trait biotechnology.
9. Why Cotton Became a Major GM Crop
Cotton is vulnerable to several economically important insect pests.
The introduction of Bt cotton provided genetic protection against susceptible target insects.
This was particularly valuable in countries where bollworm pressure was historically high.
Cotton therefore became one of the first crops where insect-resistant biotechnology achieved widespread commercial adoption.
10. Why Canola Became a Major GM Crop
Canola production requires effective weed management.
Herbicide-tolerant canola provided farmers with additional weed-control options.
Canada became particularly important in the adoption of GM canola.
Australia also became an important producer following the expansion of approved GM canola cultivation.
11. Trait Stacking Becomes More Important
The first generation of GM crops often contained a single major trait.
Over time, seed companies began combining multiple traits.
This created stacked crops.
For example:
Bt insect resistance + herbicide tolerance
or:
Bt protein A + Bt protein B + herbicide tolerance
The purpose is to provide farmers with multiple characteristics in one hybrid or variety.
12. From Single Traits to Trait Packages
Modern biotechnology products are increasingly designed as complete trait packages.
A farmer may purchase a hybrid containing:
Multiple insect-resistance traits
Herbicide tolerance
Disease-related characteristics
Agronomic improvements
This represents an important change from the earliest generation of GM crops.
The technology is no longer simply about inserting one gene.
It increasingly involves combining several genetic characteristics within advanced breeding programs.
13. Global Adoption Is Not Uniform
Although global GM crop cultivation has expanded considerably, adoption differs dramatically between countries.
Some countries have extremely high adoption rates for particular crops.
For example, biotech soybean, maize, and cotton account for a very large share of the cultivated area of these crops in the United States.
Other countries have adopted only selected GM crops.
India is an important example:
Commercial GM cultivation → primarily Bt cotton
while many other GM food crops have not received equivalent commercial cultivation approval.
14. Countries That Grow GM Crops vs Countries That Import GM Crops
This distinction is extremely important when discussing global biotechnology.
A country may:
Grow GM crops
Farmers cultivate approved GM varieties domestically.
Import GM commodities
The country allows approved GM crops or derived products to enter through international trade.
Process GM commodities
Imported crops may be processed into food, feed, oil, starch, or other products.
Conduct GM research
Scientists may conduct laboratory or field research even if commercial cultivation is not permitted.
Therefore, the global biotechnology map cannot be created simply by identifying countries where GM crops are grown.
15. Global GM Crop Area
International organizations and biotechnology databases have documented a dramatic expansion of the global area planted with GM crops since commercialization began.
The global area increased from approximately:
1.7 million hectares in 1996
to more than:
190 million hectares in the late 2010s
and remained at very high levels in subsequent years.
The exact annual figure varies depending on the dataset, crop definitions, and reporting methodology.
The long-term trend, however, is clear:
Global GM crop cultivation expanded by more than one hundred-fold from the first commercial year.
16. The 100-Fold Milestone
One of the most frequently cited milestones in the history of biotechnology is the enormous increase in cultivated GM crop area since 1996.
This expansion reflects:
Farmer adoption
New country approvals
Expanded crop portfolios
Stacked traits
Improved seed technology
International commodity trade
The scale of adoption demonstrates that agricultural biotechnology has moved from a niche technology in the 1990s to a major component of global commodity agriculture.
17. Global Distribution of GM Crop Area
The majority of GM crop cultivation is concentrated in the Americas.
The largest producing regions include:
North America
United States and Canada.
South America
Brazil, Argentina, Paraguay, Uruguay, and other countries.
Asia
India, China, Pakistan, Philippines, and other countries.
Africa
South Africa and an increasing number of other countries.
Europe
Limited cultivation, particularly GM maize in Spain.
18. The United States and Brazil
The United States and Brazil are among the most important countries in global GM crop production.
Both countries cultivate large areas of:
Soybean
Maize
Cotton
The scale of their agricultural sectors means that changes in biotechnology adoption can have major consequences for global commodity production.
19. Argentina and Canada
Argentina and Canada also play major roles.
Argentina is particularly important for:
Soybean
Maize
Canada is particularly important for:
Canola
Maize
Soybean
Together with the United States and Brazil, these countries form a major part of the global biotechnology crop landscape.
20. India and China
India and China demonstrate a different pattern.
India has extensive experience with Bt cotton.
China has developed a major biotechnology research and breeding system and has historically cultivated Bt cotton.
Both countries are also investing heavily in:
Genomics
Molecular breeding
CRISPR
Gene editing
Stress tolerance
Disease resistance
This indicates that the future biotechnology landscape in Asia may extend far beyond the traditional GM crop traits.
21. Africa's Growing Role
Africa represents an important emerging biotechnology region.
For many years, commercial GM crop cultivation on the continent was concentrated in relatively few countries.
However, additional countries have increasingly evaluated biotechnology for:
Food security
Insect control
Disease management
Climate resilience
Nutritional improvement
The commercial approval and cultivation of insect-resistant cowpea in Ghana represents an important milestone in the diversification of African biotechnology.
22. Europe Remains a Special Case
Europe has followed a different pathway.
Commercial GM crop cultivation remains limited.
However, European countries are connected to the global biotechnology system through:
Imported soybean
Imported maize
Animal feed
Food ingredients
Processing industries
Scientific research
Therefore, Europe should not simply be described as "outside the GM crop system."
It is more accurate to say that Europe has a limited domestic cultivation system combined with substantial participation in international commodity markets.
23. GM Crops and Animal Feed
One major reason GM crops remain important internationally is their role in animal feed.
Soybean is especially important.
Soybean meal is widely used as a protein source for:
Poultry
Pigs
Dairy cattle
Other livestock
Therefore, even countries that do not grow GM soybean domestically may import soybean products from countries where GM soybean is widely cultivated.
This creates a strong connection between global livestock production and agricultural biotechnology.
24. GM Crops and Food Processing
GM crops are also used in food-processing industries.
Soybean and maize can be processed into:
Oils
Starch
Sweeteners
Protein ingredients
Feed products
Industrial ingredients
The final product may contain little or no detectable DNA from the original crop depending on the processing method.
Regulatory systems differ in how they classify and label such products.
25. From GM Crops to Genome Editing
The biotechnology landscape is now entering another major phase.
The development of:
CRISPR-Cas systems
Base editing
Prime editing
TALENs
Other precision-editing technologies
has expanded the possibilities for crop improvement.
Traditional transgenic technology can introduce genetic material from another organism.
Genome editing can instead make highly targeted changes to the plant's own DNA.
26. CRISPR and the Next Generation of Crop Improvement
CRISPR technology has attracted enormous attention because it can be programmed to target specific DNA sequences.
Researchers are investigating CRISPR-based approaches for:
Disease resistance
Drought tolerance
Improved nutritional quality
Altered plant architecture
Yield-related traits
Improved shelf life
Reduced susceptibility to pathogens
Some gene-edited crops are already entering commercial markets in certain countries.
However, regulatory treatment differs considerably between jurisdictions.
27. Base Editing
Base editing represents a further refinement of genome editing.
Instead of creating a conventional double-stranded DNA break, certain base editors can directly convert one DNA base into another.
This can allow precise changes such as:
C → T
or, depending on the editor:
A → G
Base editing is particularly attractive when a specific nucleotide change is sufficient to produce the desired trait.
28. Prime Editing
Prime editing is another advanced genome-editing approach.
It has been investigated as a method for making a broader range of precise DNA changes.
Potential applications include:
Small substitutions
Small insertions
Small deletions
Prime editing remains an active area of research and development, and practical agricultural applications depend on continued improvements in efficiency, delivery, specificity, and regulation.
29. Artificial Intelligence and Crop Biotechnology
Artificial intelligence is increasingly being integrated into agricultural research.
AI and machine-learning approaches can assist researchers with:
Genome analysis
Gene-function prediction
Trait discovery
Marker identification
Breeding decisions
Phenotyping
Disease detection
Protein design
Guide-RNA design
The combination of:
Genomics + AI + gene editing + high-throughput phenotyping
could significantly accelerate future crop improvement.
30. From Transgenic Crops to Precision Breeding
The overall evolution can be summarized as:
Conventional breeding
↓
Mutation breeding
↓
Marker-assisted selection
↓
Transgenic biotechnology
↓
Stacked GM traits
↓
Genome editing
↓
Base editing and prime editing
↓
AI-assisted precision breeding
This does not mean that older technologies will disappear.
Instead, modern breeding programs increasingly combine multiple technologies.
31. What Will Define the Next Generation?
The next generation of agricultural biotechnology is likely to focus on traits that address increasingly complex challenges.
These include:
Climate change
Water scarcity
Soil degradation
Emerging plant diseases
Insect resistance
Nutritional deficiencies
Food waste
Sustainable fertilizer use
Agricultural productivity
The objective is gradually shifting from simply protecting crops against pests toward designing crops for specific agricultural and environmental challenges.
32. Important Caution About Future Predictions
Not every laboratory discovery will become a commercial crop.
A promising research result must pass several stages:
Laboratory research
↓
Greenhouse testing
↓
Contained field testing
↓
Multi-location field trials
↓
Food/feed and environmental assessment
↓
Regulatory review
↓
Seed multiplication
↓
Farmer adoption
Therefore, the existence of a gene-editing research project does not mean that a commercial product is immediately available.
33. The Current Transition
The global agricultural biotechnology industry is currently characterized by two overlapping systems.
Established biotechnology
GM soybean
GM maize
GM cotton
GM canola
Bt crops
Herbicide-tolerant crops
Stacked traits
Emerging precision biotechnology
CRISPR
Base editing
Prime editing
Gene targeting
Genomic selection
AI-assisted breeding
The first system remains commercially dominant.
The second system is shaping the future direction of crop improvement.
34. Overall Global Trend
The history of GM crops demonstrates a clear long-term progression.
1990s
Commercial introduction.
↓
2000s
Rapid expansion across major commodity crops.
↓
2010s
Widespread global adoption and stacked traits.
↓
2020s
Greater emphasis on precision breeding, gene editing, and new crop traits.
The biotechnology industry is therefore moving from relatively simple trait introduction toward increasingly precise manipulation of plant genomes.
Part 8 Summary
The global adoption of GM crops represents one of the largest technological changes in modern agriculture.
Since commercial cultivation began in 1996, GM crop production has expanded from a small experimental market to more than 190 million hectares in recent years.
Soybean, maize, cotton, and canola continue to dominate global cultivation.
The United States, Brazil, Argentina, Canada, India, China, South Africa, and other countries have played major roles in the development and adoption of agricultural biotechnology.
At the same time, the biotechnology landscape is changing.
The future is increasingly being shaped by:
CRISPR → Base editing → Prime editing → Genomics → AI-assisted breeding
The most important transition is therefore not the disappearance of GM crops, but the expansion of the agricultural biotechnology toolbox.
Modern crop improvement is moving toward increasingly precise, data-driven, and trait-specific approaches.
The next part will examine the regulatory landscape of GM crops and gene-edited plants, including biosafety assessment, food/feed approval, environmental evaluation, labeling, international differences, and why the same biotechnology product can receive different regulatory treatment in different countries.
Part 9 – Regulation, Biosafety and Approval of GM Crops
Introduction
The commercial development of genetically modified crops involves much more than creating a new genetic trait.
Before a GM crop can be commercially cultivated or used in food and feed systems, it may undergo scientific evaluation and regulatory review.
Regulatory systems are designed to assess questions such as:
Is the crop safe for human consumption?
Is it safe for animals?
Could it cause unexpected environmental effects?
Could the introduced trait affect non-target organisms?
Could the genetic material move to related plants?
Does the modified crop differ nutritionally from its conventional counterpart?
Can the product be safely cultivated under the proposed conditions?
The exact regulatory procedure differs among countries.
Therefore, there is no single worldwide approval system for GM crops.
1. Why Is GM Crop Regulation Necessary?
Genetic modification can introduce a new biological characteristic into a crop.
For example:
Insect resistance
Herbicide tolerance
Virus resistance
Nutritional modification
Altered composition
Regulatory assessment is intended to determine whether the resulting product presents unacceptable risks when compared with appropriate conventional counterparts.
The assessment is generally based on the specific crop and trait, rather than on the assumption that all GM crops are identical.
2. Biosafety Assessment
Biosafety refers broadly to measures used to evaluate and manage potential biological risks associated with biotechnology.
For GM crops, assessment may consider several areas.
Molecular characteristics
Scientists examine the genetic modification and its expression.
Food safety
The crop may be assessed for potential toxicological or allergenic concerns.
Nutritional composition
Important nutrients and other components can be compared with suitable conventional materials.
Environmental effects
Potential effects on organisms and ecosystems may be considered.
Gene flow
The possibility of movement of genetic material to compatible plants can be assessed.
3. Molecular Characterization
A GM crop is not evaluated only by observing its physical appearance.
Researchers can characterize the genetic modification at the molecular level.
Depending on the product and regulatory framework, assessment may consider:
Genetic construct
Inserted or modified sequence
Copy number
Stability
Expression of the intended trait
Protein characteristics
Genetic stability across generations
The objective is to understand what genetic change has been introduced and how it behaves in the plant.
4. Food Safety Assessment
For GM crops intended for food use, regulators may evaluate the safety of the resulting food or food ingredients.
Assessment can include:
Nutritional composition
Protein characteristics
Potential toxicity
Allergenicity
Intended biological function
Comparison with conventional varieties
The exact methodology differs between regulatory authorities.
5. Nutritional Equivalence
One important concept in GM food assessment is comparison with conventional counterparts.
Scientists may compare characteristics such as:
Protein
Fat
Carbohydrates
Vitamins
Minerals
Amino acids
Fatty acids
Other relevant constituents
The objective is to identify meaningful differences that require further assessment.
This does not mean that every GM crop must be chemically identical to a conventional crop.
Rather, the assessment examines whether observed differences are relevant to safety or nutrition.
6. Allergenicity
Allergenicity is another important consideration.
If a genetically modified crop produces a new protein, scientists may evaluate whether that protein presents a potential allergenic concern.
Assessment may consider:
Protein characteristics
Similarity to known allergens
Digestibility
Exposure
Existing scientific evidence
The exact assessment depends on the product and regulatory framework.
7. Toxicological Considerations
Where appropriate, regulators may assess whether a newly expressed protein or other altered component could have toxicological significance.
The evaluation depends on:
The nature of the new protein
Its biological activity
Expected dietary exposure
Existing knowledge
Experimental evidence
The goal is to determine whether the modification introduces a meaningful new safety concern.
8. Environmental Risk Assessment
GM crops are also evaluated from an environmental perspective in many regulatory systems.
Potential areas of assessment include:
Persistence
Weediness
Gene flow
Effects on non-target organisms
Changes in agricultural practices
Resistance development
Ecosystem-level considerations
The assessment is specific to the crop, trait, environment, and proposed use.
9. Gene Flow
Gene flow occurs when genetic material moves between populations through reproduction.
For GM crops, regulators may consider whether pollen from a modified crop could fertilize compatible plants.
The importance of gene flow depends on the crop's biology.
Factors include:
Whether compatible relatives exist nearby
Pollination mechanism
Flowering period
Geographic distribution
Trait characteristics
Not every crop presents the same gene-flow scenario.
10. Non-Target Organisms
Insect-resistant crops require particular consideration of organisms other than the intended pest.
Potentially relevant organisms can include:
Pollinators
Predatory insects
Parasitoids
Soil organisms
Other beneficial organisms
Risk assessment considers the biology of the specific trait and the likelihood of meaningful exposure.
The presence of a Bt protein does not automatically mean that every insect species will be affected.
11. Resistance Management
Resistance development is one of the most important long-term considerations for both GM insect-resistant crops and herbicide-tolerant crops.
Insect resistance
Target insects may evolve resistance to Bt proteins.
Weed resistance
Weeds may evolve resistance to herbicides used with herbicide-tolerant crops.
Because resistance is an evolutionary process, regulatory authorities and technology developers may require or recommend stewardship measures.
12. Bt Resistance Management
Resistance-management strategies for Bt crops can include:
Refuge areas
Multiple Bt proteins
Pyramided traits
Monitoring
Farmer education
Pest surveillance
The objective is to maintain the effectiveness of the technology over time.
A GM crop should therefore be considered part of an integrated pest-management system rather than a permanent replacement for all other pest-control measures.
13. Herbicide-Resistance Management
Herbicide-tolerant crops also require stewardship.
Recommended approaches can include:
Rotating herbicide modes of action
Using effective combinations where appropriate
Crop rotation
Monitoring weed populations
Preventing resistant weeds from producing seeds
Integrating non-chemical weed-control methods
These practices reduce selection pressure and help preserve herbicide effectiveness.
14. Regulatory Agencies
Different countries use different government agencies and regulatory frameworks.
Examples include:
United States
Multiple federal agencies have responsibilities related to biotechnology regulation, including:
U.S. Department of Agriculture
Environmental Protection Agency
Food and Drug Administration
Their responsibilities differ according to the characteristics and intended use of the product.
European Union
GM crops and foods are regulated through EU-level legislation and institutions together with national authorities.
India
Biotechnology regulation involves multiple government bodies and committees, including India's established biosafety regulatory framework.
Canada
Canadian authorities assess biotechnology products according to their characteristics and intended use.
The important point is that regulatory responsibilities differ between countries.
15. United States Regulatory Approach
The United States has developed a coordinated framework in which different agencies regulate different aspects of biotechnology products.
Depending on the crop and trait, regulatory considerations may involve:
USDA → plant health and certain environmental considerations
EPA → pesticidal substances and related products
FDA → food and feed safety
The precise regulatory pathway depends on the characteristics of the product.
16. European Union Regulatory Approach
The European Union has a comparatively stringent and highly structured regulatory framework for GM organisms.
Assessment can involve:
Food and feed safety
Environmental risk
Molecular characterization
Traceability
Labeling
Monitoring
The European system also involves scientific assessment through the European Food Safety Authority (EFSA) for relevant food and feed safety questions.
17. GM Crop Cultivation in the European Union
The European Union illustrates an important distinction between:
Approval for use
and
approval for cultivation.
A GM product may be authorized for particular uses while commercial cultivation remains limited.
Spain has historically been the most important EU country for commercial cultivation of Bt maize.
This difference between cultivation and import/use is essential when interpreting European biotechnology statistics.
18. India’s Regulatory Framework
India has a structured biosafety system for genetically engineered organisms.
Regulatory evaluation can involve institutions and committees operating under the Ministry of Environment, Forest and Climate Change and other relevant government departments.
India's commercial experience with GM crops has been dominated by Bt cotton.
At the same time, proposals involving GM food crops have undergone extensive scientific, regulatory, political, and public discussion.
19. Regulation of Gene-Edited Crops
The emergence of CRISPR has created a new regulatory question.
Should a plant containing a precise genome edit be regulated in exactly the same way as a conventional transgenic GM plant?
Countries have taken different approaches.
Some jurisdictions distinguish certain gene-edited plants from conventional GM organisms when no foreign DNA remains in the final product.
Other jurisdictions regulate genome-edited products more similarly to GM organisms.
This difference has become one of the most important policy issues in modern agricultural biotechnology.
20. Why Gene Editing Creates a Regulatory Challenge
Consider two hypothetical crops.
Crop A
A gene from another organism is inserted into the plant.
Crop B
One existing plant gene is precisely altered using CRISPR and no foreign DNA remains in the final product.
Both crops have been produced using biotechnology, but the biological nature of the final genetic change can be very different.
This has led regulators to debate whether the process used to create the crop or the characteristics of the final product should be the primary basis for regulation.
21. Product-Based vs Process-Based Regulation
This debate can be simplified into two approaches.
Process-based approach
The regulatory framework focuses strongly on how the organism was produced.
Product-based approach
The regulatory framework focuses more strongly on the characteristics and risks of the resulting organism.
Different countries combine these concepts in different ways.
This explains why the same gene-edited crop may face different regulatory requirements in different jurisdictions.
22. Regulatory Review Is Not the Same as Scientific Research
A laboratory demonstration does not equal commercial approval.
A research team may successfully modify a plant gene.
That does not automatically mean the resulting crop can be:
Sold
Cultivated commercially
Imported
Used as food
Used as animal feed
Additional steps may be required.
23. Typical Development Pipeline
A simplified biotechnology crop-development pathway can be represented as:
Gene/trait discovery
↓
Laboratory development
↓
Transformation or genome editing
↓
Molecular characterization
↓
Greenhouse testing
↓
Contained field trials
↓
Multi-location field testing
↓
Food/feed assessment
↓
Environmental assessment
↓
Regulatory submission
↓
Regulatory review
↓
Commercial approval
↓
Seed multiplication
↓
Farmer adoption
The actual process varies by crop, country, technology, and regulatory requirements.
24. Post-Approval Monitoring
Regulatory responsibility does not necessarily end when a crop receives approval.
Some regulatory systems can include post-market or post-release monitoring.
This may involve:
Environmental monitoring
Resistance monitoring
Stewardship requirements
Product traceability
Reporting of unexpected observations
The exact requirements differ among countries.
25. Traceability and Labeling
Some jurisdictions require particular GM products to be labeled or traceable.
The purpose can include:
Consumer information
Supply-chain management
Regulatory compliance
Identity preservation
Labeling rules differ substantially around the world.
A label requirement does not by itself establish that a product is unsafe.
It is a regulatory and consumer-information mechanism.
26. International Trade
Different national regulations can create challenges for international agricultural trade.
A crop approved for cultivation in one country may not have equivalent approval in another.
This can affect:
Grain exports
Commodity segregation
Food processing
Animal feed
Seed trade
Import documentation
International exporters therefore need to understand the regulatory status of biotechnology products in destination markets.
27. Coexistence of GM and Non-GM Agriculture
GM agriculture can exist alongside:
Conventional agriculture
Organic agriculture
Identity-preserved crops
However, coexistence may require management measures where production systems have different market or regulatory requirements.
Possible considerations include:
Buffer zones
Flowering-time management
Crop separation
Harvest management
Cleaning of equipment
Supply-chain segregation
The appropriate measures depend on the crop and local regulations.
28. Organic Agriculture and GM Crops
Organic certification systems generally have specific rules concerning genetically engineered organisms.
In many jurisdictions, certified organic production does not permit the intentional use of GM seed or inputs.
This is separate from the question of whether GM crops are scientifically safe.
The two systems represent different production standards and market requirements.
29. Biosafety Does Not Mean Zero Risk
No agricultural production system is completely risk-free.
Regulatory science therefore generally focuses on identifying and managing relevant risks.
For biotechnology products, this may involve asking:
What is the hazard?
How likely is exposure?
What is the potential consequence?
How does the modified crop compare with appropriate conventional counterparts?
Can the risk be managed?
This is a more useful framework than simply asking whether a crop is "safe" or "unsafe" without context.
30. Risk Assessment Must Be Product-Specific
A Bt cotton variety, herbicide-tolerant soybean, virus-resistant papaya, and CRISPR-edited wheat are biologically different products.
They should not automatically be treated as having identical risks.
A scientifically meaningful assessment therefore considers:
Crop + Trait + Environment + Exposure + Intended Use
This principle is central to modern biosafety assessment.
31. Regulatory Differences Can Affect Innovation
Regulatory requirements influence how quickly new biotechnology products can reach farmers.
If approval processes are lengthy or expensive, development costs can increase.
This may particularly affect:
Small companies
Public-sector breeding programs
Specialty crops
Minor crops
Technologies designed for smallholder agriculture
Regulatory systems therefore have to balance:
Safety
with
innovation
and
accessibility.
32. Public Participation and Transparency
Biotechnology regulation is not purely a laboratory exercise.
Public trust can be influenced by:
Transparency
Scientific communication
Clear labeling policies
Access to regulatory information
Stakeholder consultation
Independent scientific review
Clear communication is particularly important because technical biotechnology concepts can easily be misunderstood.
33. The Future of Regulation
Regulatory systems are now facing a new generation of technologies.
These include:
CRISPR-Cas
Base editing
Prime editing
Multiplex genome editing
RNA-based technologies
Synthetic biology
AI-assisted biological design
The central regulatory challenge will be determining how to evaluate these technologies efficiently while maintaining appropriate safety standards.
34. Regulation and the Future of Agriculture
The future agricultural biotechnology landscape will probably contain multiple regulatory categories.
Some products may be:
Traditional transgenic GM crops
Others may be:
Precisely gene-edited crops
Others may involve:
Conventional breeding assisted by genomic technologies
The boundaries between these categories will continue to evolve as scientific techniques become more precise.
Part 9 Summary
Regulation and biosafety assessment are essential components of agricultural biotechnology.
GM crops may undergo evaluation of:
Molecular characteristics
Food and feed safety
Nutritional composition
Allergenicity
Environmental effects
Gene flow
Non-target organisms
Resistance development
Regulatory systems differ among countries, which explains why a biotechnology crop may be commercially cultivated in one country but restricted or unavailable in another.
The emergence of CRISPR and other genome-editing technologies has created additional regulatory questions because some gene-edited crops may contain precise changes without introducing foreign DNA.
The future of biotechnology regulation will therefore need to balance three major objectives:
Safety + scientific evidence + innovation
A strong regulatory framework should protect human health and the environment while allowing scientifically validated agricultural technologies to be evaluated efficiently.
The next part will examine public perception, controversies, myths, scientific evidence, and the debate surrounding GM crops, including common claims about health, biodiversity, pesticides, corporate control, and food safety.
Part 10 – Public Perception, Controversies and Scientific Evidence on GM Crops
Introduction
Genetically modified crops have been among the most discussed agricultural technologies of the modern era.
Scientific research has demonstrated that genetic modification can be used to introduce useful agricultural traits. At the same time, GM crops have generated substantial public debate concerning food safety, environmental effects, pesticide use, biodiversity, intellectual property, and corporate control of agriculture.
A scientifically useful discussion should separate three different questions:
What does the scientific evidence show?
What risks or uncertainties remain?
What are the social, economic and ethical concerns?
These questions are related, but they are not identical.
1. Why Are GM Crops Controversial?
Public attitudes toward GM crops are influenced by several factors.
These include:
Concerns about food safety
Environmental concerns
Fear of unintended genetic effects
Pesticide use
Herbicide resistance
Insect resistance
Biodiversity
Gene flow
Seed patents
Corporate concentration
Consumer choice
Labeling
Trust in regulatory institutions
Some concerns are scientific questions that can be experimentally tested.
Others involve economics, ethics, policy, or personal values.
A balanced discussion should not treat all of these issues as if they were the same type of question.
2. Are GM Foods Safe to Eat?
Food safety must be evaluated on a product-by-product basis.
A genetically modified crop is not automatically safe or unsafe simply because it was produced using genetic engineering.
Regulatory assessments can examine:
The introduced genetic material
Newly expressed proteins
Nutritional composition
Potential toxicity
Potential allergenicity
Intended use
Comparison with conventional counterparts
GM foods that have passed applicable regulatory safety assessments are considered suitable for their approved uses.
However, this does not mean that every hypothetical or experimental GM crop has already been demonstrated to be safe.
3. "All GM Foods Are the Same" – Myth
This is an important misconception.
GM crops can contain very different traits.
For example:
Bt insect resistance
Herbicide tolerance
Virus resistance
Nutritional modification
Altered oil composition
These traits have different biological functions.
Therefore, the correct scientific question is not:
"Are GM crops safe?"
but rather:
"What are the characteristics and risks of this particular GM crop and trait?"
4. "GM Means Toxic" – Myth
The term genetically modified describes a method or category of genetic alteration.
It does not itself indicate toxicity.
A newly introduced protein or altered metabolic pathway must be evaluated according to its biological characteristics.
Similarly, conventional breeding can also produce plants containing many genetic changes.
Therefore, the presence of a genetic modification alone does not establish that a crop is toxic.
5. "GM Crops Always Increase Pesticide Use" – Myth
This statement is too broad.
The effect depends on the trait.
Bt crops
Can reduce the need for some insecticide applications against susceptible target pests.
Herbicide-tolerant crops
Can simplify weed control but may contribute to increased selection pressure for herbicide-resistant weeds when herbicides are repeatedly used without adequate diversification.
Therefore, pesticide effects must be evaluated according to:
Crop + Trait + Pest/Weed + Management System
6. Bt Crops and Insecticides
Bt crops are designed to produce proteins derived from Bacillus thuringiensis that are active against particular insect pests.
This can provide protection within the plant itself.
As a result, farmers may reduce external insecticide applications targeting susceptible pests.
However, Bt crops do not eliminate all insect pests.
Farmers may still need to manage:
Secondary pests
Non-target pests
Resistant insects
Other diseases
Integrated pest management therefore remains important.
7. "GM Crops Kill All Insects" – Myth
Bt crops are not designed to kill every insect.
The biological activity of a Bt protein depends on the particular protein and susceptible insect species.
Beneficial organisms can also be considered during environmental risk assessment.
The ecological effects therefore need to be evaluated using the specific crop and trait rather than assuming that every insect is equally affected.
8. Herbicide-Tolerant Crops and Weed Resistance
One of the genuine challenges associated with some herbicide-tolerant crop systems is the evolution of herbicide-resistant weeds.
The mechanism is based on natural selection.
Repeated herbicide exposure removes susceptible weeds while resistant individuals may survive.
If these survivors reproduce, resistance can become increasingly common.
This is not evidence that genetic engineering itself causes weeds to become resistant.
Rather, it demonstrates the importance of herbicide stewardship.
9. How Can Herbicide Resistance Be Managed?
Management strategies can include:
Rotating herbicide modes of action
Using appropriate herbicide combinations
Crop rotation
Mechanical weed control
Monitoring weed populations
Preventing resistant weeds from producing seed
Using integrated weed management
The objective is to reduce the evolutionary selection pressure imposed by repeated use of the same control strategy.
10. "GM Crops Destroy Biodiversity" – Oversimplification
Biodiversity is affected by many agricultural factors.
These include:
Habitat destruction
Monoculture
Pesticide use
Land conversion
Crop rotation
Agricultural intensification
Climate change
GM technology can influence some of these factors, but it is not itself equivalent to monoculture or biodiversity loss.
A complete assessment must consider the entire agricultural system.
11. Gene Flow and Wild Relatives
Another concern is the possibility that genetic material from a GM crop could move into related plants.
This is known as gene flow.
The likelihood and significance depend on:
Crop biology
Pollination mechanism
Compatible relatives
Geographic distribution
Flowering period
Trait characteristics
Gene flow is therefore a legitimate scientific issue, but its significance must be evaluated for each crop.
12. Can GM Genes Spread to Other Crops?
Gene movement is biologically possible in some crop systems.
However, the consequences depend on whether the recipient plant is compatible and whether the transferred trait provides an advantage.
Regulatory assessments can therefore consider:
Presence of compatible plants
Pollen movement
Reproductive biology
Persistence
Potential environmental consequences
Management measures may be applied where necessary.
13. "GM Crops Are the Same as Cloning" – Myth
Genetic modification and cloning are different technologies.
Genetic modification
Changes particular genetic characteristics of an organism.
Cloning
Produces genetically similar copies of an organism or cell.
A GM crop can be propagated through normal plant breeding or seed production and does not need to be cloned.
14. "GM Crops Are Completely Unnatural" – A Complex Question
The word natural has different meanings in scientific and social discussions.
Humans have modified crops for thousands of years through:
Selection
Hybridization
Mutation breeding
Polyploidy
Backcrossing
Modern genetic engineering provides additional tools for making targeted biological changes.
Therefore, the important scientific question is not simply whether a technology is "natural."
A more useful question is:
What genetic change was made, what trait resulted, and what are its biological consequences?
15. Conventional Breeding Also Changes DNA
Traditional breeding can combine genetic material from two parents.
Large numbers of genetic variants can therefore be introduced and reshuffled during breeding.
Modern genome editing can sometimes make a much smaller and more specific genetic change.
However, greater precision does not automatically mean zero risk.
The resulting trait still needs appropriate evaluation.
16. "GM Crops Cause Cancer" – What Should Be Considered?
Claims about cancer and GM foods should be evaluated using evidence from toxicology, nutrition, epidemiology, and regulatory assessments.
A specific GM food cannot be judged solely from the fact that genetic engineering was used.
The relevant question is whether the particular product has characteristics associated with a meaningful health risk.
Broad claims that all GM foods cause cancer are not supported simply by the existence of genetic modification.
17. "GM Crops Cause Infertility" – Myth
There is no scientific basis for treating genetic modification as a universal cause of infertility.
Claims concerning reproductive effects must be evaluated using evidence for the specific crop, trait, exposure level, and biological mechanism.
A laboratory observation at an unrealistic exposure level should not automatically be interpreted as evidence of a human health effect from normal dietary consumption.
18. Corporate Control of Seeds
Not every controversy surrounding GM crops is a biological safety issue.
Seed ownership and intellectual-property rights are legitimate economic and policy questions.
Biotechnology development can require substantial investment in:
Gene discovery
Breeding
Field trials
Regulatory testing
Seed multiplication
Commercialization
Companies may protect these investments through intellectual-property rights.
This can create concerns about:
Seed prices
Farmer dependence
Market concentration
Access to technology
Public-sector breeding
These questions are part of agricultural economics rather than food toxicology.
19. Farmer Choice
Technology adoption ultimately depends on farmer decisions.
Farmers may consider:
Seed price
Expected yield
Pest pressure
Crop price
Input costs
Labor requirements
Market access
Regulatory restrictions
Availability of alternatives
A technology is likely to be adopted when its perceived benefits exceed its costs and risks under the farmer's production conditions.
20. Consumer Choice
Consumers may have different preferences concerning:
GM ingredients
Organic products
Local food
Conventional agriculture
Biotechnology
Environmental sustainability
Consumer choice can therefore exist alongside scientific assessment.
A consumer may prefer or avoid a particular production system for ethical or personal reasons even when scientific assessments conclude that an approved product is safe.
21. GM Labeling
GM labeling policies vary among countries.
Some jurisdictions require specific labeling of foods containing genetically modified ingredients.
Others focus on characteristics of the final food or use different thresholds and labeling systems.
Therefore:
GM labeling ≠ universal evidence of danger.
Labeling can serve as a consumer-information or regulatory mechanism.
22. Public Trust
Scientific evidence alone does not always determine public acceptance.
Trust can be affected by:
Transparency
Government policy
Corporate reputation
Communication
Previous food-safety incidents
Media coverage
Cultural attitudes
Political beliefs
This is why effective science communication is an important part of biotechnology.
23. Importance of Scientific Communication
Biotechnology involves technical concepts that can be difficult to communicate.
For example:
Gene → protein → trait → agricultural effect
is a biological chain that can be explained clearly without using misleading statements.
Good communication should:
Define technical terms
Distinguish evidence from opinion
Explain uncertainty
Avoid exaggerated claims
Use reliable references
Present both benefits and limitations
24. Scientific Consensus and Individual Studies
A single research paper should not normally be treated as definitive proof of a broad claim.
Scientific conclusions are strengthened by:
Multiple independent studies
Reproducibility
Systematic reviews
Meta-analyses
Long-term observations
Regulatory assessments
This is especially important for controversial subjects.
25. Why Some Studies Appear to Contradict Each Other
Research results can differ because of:
Different experimental designs
Different crops
Different traits
Different doses
Different environmental conditions
Different statistical methods
Different endpoints
Therefore, apparently contradictory findings need to be evaluated in their scientific context.
26. Long-Term Commercial Experience
One important source of evidence comes from the extensive commercial cultivation of GM crops.
Millions of farmers have cultivated GM crops across multiple countries and agricultural environments.
This long-term experience provides information about:
Agronomic performance
Pest management
Resistance development
Environmental effects
Farmer economics
Food and feed use
However, long-term use does not eliminate the need for monitoring and continued scientific evaluation.
27. GM Crops Are Not a Single Technology
It is more accurate to think of GM crops as a family of technologies.
A Bt cotton crop and a herbicide-tolerant soybean are genetically modified, but they have very different traits and agricultural uses.
Similarly:
CRISPR-edited wheat
and
transgenic Bt maize
should not automatically be treated as biologically identical products.
28. GM Crops vs Gene-Edited Crops
The distinction is increasingly important.
Conventional GM technology
Often introduces genetic material using recombinant DNA approaches.
Gene editing
Can make targeted modifications to an existing gene.
Base editing
Can directly change particular nucleotide bases without requiring a conventional double-stranded DNA break.
Prime editing
Can potentially introduce a wider range of precise genetic changes.
These technologies overlap in purpose but differ substantially in molecular mechanism.
29. The Role of Evidence-Based Decision Making
A balanced assessment of agricultural biotechnology should consider several dimensions simultaneously.
Scientific
Is the trait biologically effective and appropriately assessed?
Environmental
What are the potential ecological consequences?
Economic
Does the technology provide value to farmers?
Social
How does it affect communities and consumer preferences?
Regulatory
Does it meet the applicable legal requirements?
Ethical
Are questions of access, ownership, fairness, and responsibility appropriately addressed?
No single dimension provides the complete answer.
30. A Balanced View of GM Crops
The evidence supports neither the idea that GM crops are universally beneficial nor the idea that they are universally harmful.
GM crops have produced measurable agricultural benefits in many systems.
At the same time, they present genuine challenges that require management.
These include:
Insect resistance
Herbicide-resistant weeds
Gene-flow considerations
Market concentration
Regulatory complexity
Consumer acceptance
Access to technology
The most scientifically defensible position is therefore case-by-case evaluation.
31. Key Questions for Evaluating a GM Crop
When assessing any biotechnology crop, ask:
1. What was changed?
Identify the genetic modification.
2. Why was it changed?
Identify the intended trait.
3. Does the trait work?
Examine field and laboratory evidence.
4. What are the benefits?
Consider yield, pest control, resource use, and economics.
5. What are the limitations?
Consider resistance, management, cost, and environmental issues.
6. Has the product been assessed?
Check the relevant regulatory status.
7. Where is it approved?
Regulatory status varies among countries.
This framework provides a more reliable approach than evaluating GM crops through general assumptions.
32. The Future of Public Debate
As agricultural biotechnology moves toward CRISPR, base editing, prime editing, and AI-assisted breeding, public discussions will likely become more complex.
Future debates may focus on:
How precise an edit is
Whether foreign DNA remains
Regulation of gene-edited crops
Ownership of edited traits
Access to genome-editing technologies
Ethical boundaries
Environmental consequences
The basic scientific principle will remain the same:
Evaluate the actual biological characteristics of the product and the context in which it is used.
Part 10 Summary
GM crops remain controversial because they combine science with economics, environmental policy, food systems, intellectual property, and consumer choice.
Scientific evaluation indicates that approved GM crops should be assessed individually rather than treating all genetically modified organisms as one identical category.
Some GM technologies have provided significant benefits, including improved insect protection, weed-management flexibility, and farm-level economic advantages.
At the same time, challenges such as insect resistance, herbicide-resistant weeds, gene flow, market concentration, and regulatory differences require continued attention.
The emergence of gene editing adds another layer to the discussion.
Technologies such as CRISPR, base editing, and prime editing can make increasingly precise genetic changes, creating both new opportunities and new regulatory and ethical questions.
A scientifically responsible conclusion is therefore:
Understand the specific technology → examine the evidence → evaluate benefits and risks → consider the regulatory context → make decisions based on the available evidence.
The next section will examine the future of agricultural biotechnology, including CRISPR crops, base editing, prime editing, AI-assisted breeding, climate-resilient crops, nutritional improvement, synthetic biology, and the transition from traditional GM technology toward precision crop engineering.
Part 11 – The Future of Agricultural Biotechnology
Introduction
Agricultural biotechnology is entering a new phase.
The first generation of commercial biotechnology crops focused mainly on relatively straightforward agricultural problems such as insect damage and weed management.
Modern research is now moving toward more complex objectives:
Climate resilience
Disease resistance
Improved nutritional quality
Improved resource-use efficiency
Reduced food loss
Better crop quality
Precision genome modification
Faster breeding
AI-assisted crop improvement
Technologies such as CRISPR, base editing, prime editing, genomics, high-throughput phenotyping, and artificial intelligence are increasingly being combined with conventional breeding.
The future of crop improvement is therefore unlikely to depend on one technology.
Instead, it will involve the integration of multiple technologies into precision breeding systems.
1. From GM Crops to Precision Crop Engineering
The evolution of agricultural biotechnology can be broadly represented as:
Conventional breeding
↓
Mutation breeding
↓
Marker-assisted selection
↓
Transgenic GM crops
↓
Stacked GM traits
↓
Genome editing
↓
Base editing
↓
Prime editing
↓
AI-assisted precision breeding
Each stage has added new capabilities.
Importantly, newer technologies do not necessarily replace older technologies.
Modern breeding programs can combine several approaches depending on the biological problem being addressed.
2. CRISPR as a Crop-Improvement Technology
CRISPR-based genome editing has become one of the most important technologies in modern plant biotechnology.
The technology can be programmed to recognize particular DNA sequences and modify selected genomic regions.
Researchers are investigating CRISPR for traits including:
Disease resistance
Drought tolerance
Salinity tolerance
Nutritional improvement
Plant architecture
Yield-related traits
Fruit quality
Shelf life
Stress responses
The ability to target specific genes has made CRISPR particularly attractive for precision breeding.
3. Gene Knockout Strategies
One relatively straightforward use of CRISPR is gene knockout.
If a gene negatively affects a desired agricultural characteristic, researchers may attempt to disrupt its function.
A simplified workflow is:
Target gene
↓
CRISPR editing
↓
Small DNA change
↓
Reduced or lost gene function
↓
Desired phenotype
The biological outcome depends on the function of the gene and the genetic background of the crop.
4. Multiplex Genome Editing
Traditional genome editing may target one gene at a time.
Modern systems can potentially target multiple genes simultaneously.
This is called multiplex genome editing.
It is particularly useful for complex traits because many agricultural characteristics are controlled by multiple genes.
Potential applications include:
Disease resistance
Plant architecture
Stress tolerance
Nutritional characteristics
Yield-related traits
However, editing multiple genes also increases the complexity of validation and characterization.
5. Base Editing
Base editing represents an important development beyond conventional CRISPR editing.
Instead of relying on a conventional double-stranded DNA break, base editors can directly convert certain DNA bases into other bases.
Depending on the system, examples include:
C → T
and
A → G
This can be useful when a desired phenotype can be produced by changing a single nucleotide.
6. Why Base Editing Matters
Many naturally occurring genetic differences involve individual nucleotide changes.
A conventional editing approach may require a more complex DNA repair process.
Base editing can potentially reproduce a specific nucleotide change more directly.
This creates opportunities for:
Reproducing favorable natural variants
Eliminating specific deleterious variants
Fine-tuning gene function
Modifying regulatory sequences
Developing precision breeding lines
7. Prime Editing
Prime editing is another emerging genome-editing technology.
It was developed to enable a broader range of precise DNA modifications than many conventional base editors.
Depending on the system, prime editing can potentially introduce:
Small substitutions
Small insertions
Small deletions
This makes it attractive for applications where the desired genetic change cannot easily be achieved through simple base conversion.
8. Challenges of Prime Editing
Despite its potential, prime editing remains technically challenging in plants.
Researchers continue to work on:
Editing efficiency
Delivery
Target-site accessibility
Regeneration of edited plants
Off-target assessment
Stable inheritance
Trait performance
A successful molecular edit is only the first step.
The resulting plant must also demonstrate a useful and stable agricultural phenotype.
9. De Novo Domestication
Genome editing may also allow researchers to modify wild or semi-domesticated plants to introduce desirable domestication characteristics.
This concept is known as de novo domestication.
Instead of spending many generations transferring traits through conventional breeding, researchers may target genes controlling characteristics such as:
Plant architecture
Fruit size
Flowering
Seed production
Yield components
This approach could potentially expand the range of crops available for agricultural development.
10. Climate-Resilient Crops
Climate change is creating new challenges for agriculture.
Important stresses include:
Drought
Heat
Salinity
Flooding
Changing pest populations
Emerging diseases
Biotechnology may contribute to developing crops that maintain productivity under stressful conditions.
Potential targets include genes involved in:
Water-use regulation
Stress signaling
Root development
Osmotic adjustment
Heat responses
Disease defense
However, climate resilience is usually a complex trait involving multiple biological pathways.
11. Drought-Tolerant Crops
Water scarcity is one of the major constraints on agricultural productivity.
Researchers are studying genes involved in:
Root architecture
Water transport
Stomatal regulation
Stress signaling
Osmoprotectant production
The objective is not necessarily to create crops that require no water.
Instead, the goal is to improve productivity or survival under limited-water conditions.
12. Heat-Tolerant Crops
Increasing temperatures can affect:
Pollen viability
Flowering
Seed formation
Photosynthesis
Grain filling
Fruit development
Genome engineering and molecular breeding may help identify and modify genes associated with heat responses.
However, heat tolerance is highly dependent on the interaction between genetics and environment.
13. Salinity Tolerance
Soil salinity can severely reduce crop productivity.
High salt concentrations can interfere with:
Water uptake
Ion balance
Photosynthesis
Cellular metabolism
Researchers are investigating genes involved in ion transport and stress responses.
Future precision breeding may combine these genes with conventional breeding to develop more salt-tolerant varieties.
14. Disease-Resistant Crops
Plant diseases cause substantial agricultural losses.
Biotechnology can contribute to disease resistance through:
Resistance genes
Gene editing
RNA-based approaches
Marker-assisted selection
Genomic selection
CRISPR can potentially modify susceptibility genes or enhance endogenous defense mechanisms.
The objective is to reduce disease development while maintaining crop productivity.
15. Nutritional Improvement
Agricultural biotechnology can also be used to improve the nutritional characteristics of crops.
Potential objectives include increasing:
Vitamins
Minerals
Essential amino acids
Healthy fatty acids
Protein quality
One well-known example from agricultural biotechnology is biofortification, in which crops are developed to provide increased levels of specific nutrients.
Future genome-editing systems may allow more precise modification of metabolic pathways involved in nutritional composition.
16. Improving Oil Composition
Oilseed crops are another important target.
Biotechnology can modify fatty-acid pathways to influence:
Oil stability
Fatty-acid composition
Nutritional characteristics
Industrial properties
Such modifications may create oils with characteristics suited to specific food or industrial applications.
17. Reducing Food Waste
Food loss occurs throughout agricultural supply chains.
Biotechnology may help improve:
Shelf life
Fruit ripening
Browning resistance
Storage stability
Post-harvest quality
Reducing food loss can increase the amount of food available from the same agricultural production system.
This makes post-harvest biotechnology an increasingly important area of research.
18. Improving Plant Architecture
Plant architecture influences crop performance.
Important characteristics include:
Plant height
Branching
Leaf angle
Root structure
Flowering
Tillering
Genome editing can potentially modify genes controlling these characteristics.
This could help breeders design plants better suited to:
High-density planting
Mechanized harvesting
Limited water
Specific climates
19. Root Engineering
Roots play a major role in:
Water uptake
Nutrient acquisition
Soil interaction
Stress tolerance
Plant anchorage
Future biotechnology may increasingly focus on root traits.
Potential targets include:
Root depth
Root branching
Root diameter
Root architecture
Root-associated microbial interactions
Improved root systems could contribute to resource-use efficiency.
20. Nitrogen-Use Efficiency
Nitrogen fertilizer is essential for high agricultural productivity.
However, excessive or inefficient nitrogen use can contribute to environmental problems.
Researchers are investigating ways to improve:
Nitrogen uptake
Nitrogen assimilation
Nitrogen remobilization
Nitrogen-use efficiency
Future breeding strategies could potentially produce crops that maintain productivity while requiring less fertilizer nitrogen.
21. Phosphorus-Use Efficiency
Phosphorus is another essential plant nutrient.
Unlike nitrogen, phosphorus is derived largely from mineral resources that require mining.
Improving phosphorus-use efficiency could therefore have both economic and environmental benefits.
Research is examining genes involved in:
Phosphate uptake
Phosphate transport
Root development
Internal phosphate recycling
22. Microbiome and Agricultural Biotechnology
Plants interact with complex microbial communities.
These microorganisms can influence:
Nutrient availability
Disease resistance
Root development
Stress responses
Plant growth
Future agricultural biotechnology may increasingly combine plant genetic improvement with microbiome research.
This could create integrated strategies involving:
Plant genetics + beneficial microbes + improved agronomy
23. Synthetic Biology in Agriculture
Synthetic biology extends genetic engineering by enabling researchers to design biological systems using defined genetic components.
Potential agricultural applications include:
Novel metabolic pathways
Improved nutritional compounds
Biological production systems
New crop traits
Engineered plant-microbe interactions
Synthetic biology could eventually allow researchers to design biological functions that are difficult to obtain through conventional breeding alone.
24. Artificial Intelligence and Crop Genomics
Artificial intelligence is becoming increasingly important in agricultural research.
Large genomic datasets can be analyzed using machine-learning approaches to identify relationships between:
Genotype → Environment → Phenotype
This can help researchers identify candidate genes and predict breeding outcomes.
25. AI-Assisted Gene Discovery
Traditional gene discovery can require extensive experimental screening.
AI-based approaches can help prioritize candidate genes by analyzing:
Genome sequences
Gene-expression data
Protein characteristics
Evolutionary conservation
Phenotypic datasets
Researchers can then experimentally test the most promising candidates.
AI therefore acts as a decision-support tool rather than replacing biological experimentation.
26. AI and CRISPR Guide Design
CRISPR editing requires careful target selection.
Computational tools can help researchers identify candidate target sequences and evaluate factors such as:
Target compatibility
Potential off-target sites
Sequence context
Predicted editing efficiency
Machine-learning models may improve these predictions as larger datasets become available.
27. High-Throughput Phenotyping
Genetic improvement requires accurate measurement of plant characteristics.
High-throughput phenotyping uses technologies such as:
Imaging
Drones
Sensors
Spectral measurements
Automated plant analysis
These systems can collect large amounts of information on:
Plant growth
Disease symptoms
Canopy development
Water stress
Biomass
Yield-related characteristics
The combination of high-throughput phenotyping and genomics can accelerate breeding.
28. Digital Agriculture and Biotechnology
Future crop improvement will increasingly connect biotechnology with digital agriculture.
A simplified system could look like:
Field sensors
↓
Phenotypic data
↓
Genomic information
↓
AI analysis
↓
Candidate gene identification
↓
Genome editing
↓
Field validation
This represents a shift toward data-driven crop improvement.
29. Precision Breeding
The term precision breeding describes approaches that aim to make breeding more targeted and efficient.
It can involve:
Marker-assisted selection
Genomic selection
Genome editing
Base editing
Prime editing
Speed breeding
AI
High-throughput phenotyping
The objective is to reduce the time required to identify and develop useful genetic combinations.
30. Speed Breeding
Speed breeding uses controlled environmental conditions to accelerate plant generation cycles.
By increasing the number of generations that can be produced per year, breeders can shorten development timelines.
When combined with genome editing, speed breeding could potentially accelerate the movement from:
Gene discovery → edited line → breeding line → advanced variety
31. Combining Conventional Breeding and Gene Editing
Genome editing is not a replacement for plant breeding.
An edited plant still needs:
Suitable genetic background
Good agronomic performance
Disease adaptation
Environmental stability
Yield
Quality
Market acceptance
Therefore, genome editing is most powerful when integrated with conventional and molecular breeding.
32. Off-Target Effects
Precision editing does not mean that unintended changes are impossible.
Researchers therefore evaluate potential off-target modifications.
Modern approaches may include:
Computational prediction
Sequencing
Molecular assays
Genetic segregation analysis
The objective is to confirm that the desired modification is present and unintended changes are adequately characterized.
33. Delivery Remains a Major Challenge
Getting genome-editing systems into plant cells efficiently remains an important technical challenge.
Delivery approaches can include:
Agrobacterium-mediated transformation
Particle bombardment
Protoplast methods
Viral systems
Ribonucleoprotein delivery
Other emerging approaches
Different crops respond differently to these methods.
Improving delivery and plant regeneration will be essential for expanding genome editing to more crop species.
34. Transformation Bottlenecks
Some important crops are difficult to transform or regenerate.
This can slow the development of genome-edited varieties.
Improving:
Tissue culture
Regeneration
Transformation efficiency
Genotype-independent protocols
could significantly broaden the range of crops accessible to precision biotechnology.
35. Smallholder Agriculture
Future biotechnology should not be limited to major commodity crops.
Important opportunities exist in crops important to smallholder farmers, including:
Cassava
Cowpea
Sorghum
Millet
Banana
Tomato
Potato
Legumes
Developing technologies for these crops could contribute to food security in regions where agricultural productivity remains constrained by pests, disease, climate, and limited inputs.
36. Climate Change and Biotechnology
Climate change may alter:
Pest distributions
Disease pressure
Growing seasons
Water availability
Temperature patterns
This creates demand for crops that can adapt to changing environments.
Biotechnology may contribute to this adaptation, but it should be combined with:
Improved agronomy
Irrigation management
Soil conservation
Crop diversification
Integrated pest management
No single technology can solve climate-related agricultural challenges.
37. Regulatory Challenges for New Technologies
Future biotechnology will also require regulatory adaptation.
Regulators will need to evaluate products developed through:
CRISPR
Base editing
Prime editing
Synthetic biology
RNA technologies
The central challenge will be maintaining safety while ensuring that regulations remain scientifically proportionate to the characteristics of the final product.
38. Ethical Considerations
Future agricultural biotechnology raises ethical questions concerning:
Ownership of genetic resources
Patents
Farmer access
Biodiversity
Environmental release
Consumer choice
Data ownership
AI-assisted biological design
Scientific capability does not automatically answer these questions.
They require discussion among scientists, farmers, regulators, policymakers, industry, and society.
39. Public-Sector Biotechnology
Public research institutions can play an important role in ensuring that biotechnology benefits are not limited to commercially attractive crops.
Public-sector programs can focus on:
Food-security crops
Orphan crops
Smallholder agriculture
Disease resistance
Climate adaptation
Nutritional improvement
This can complement private-sector investment in major commercial crops.
40. The Future Agricultural Biotechnology Model
The future crop-development pipeline may increasingly resemble:
Genome sequencing
↓
AI-based gene discovery
↓
Candidate gene validation
↓
CRISPR/base/prime editing
↓
Speed breeding
↓
High-throughput phenotyping
↓
Multi-location field testing
↓
Regulatory assessment
↓
Commercial deployment
This integrated model could substantially accelerate crop improvement.
41. What Will Happen to Traditional GM Crops?
The emergence of gene editing does not mean that existing GM crops will disappear.
GM soybean, maize, cotton, and canola remain important commercial technologies.
Existing GM traits will continue to be improved through:
New trait combinations
Improved resistance management
Better breeding backgrounds
New generations of stacked products
At the same time, gene editing will add another category of precision breeding technologies.
42. The Future Is Likely to Be a Combination of Technologies
The agricultural biotechnology industry is moving toward a toolbox rather than a single dominant method.
A future breeding program could combine:
Conventional breeding
Marker-assisted selection
Genomic selection
CRISPR
Base editing
AI
High-throughput phenotyping
Speed breeding
This combination may be more powerful than any individual technology.
43. From Yield to Sustainability
Early agricultural biotechnology focused heavily on protecting yield.
Future biotechnology is likely to address broader sustainability goals.
These may include:
Producing more food with fewer inputs
Improving water-use efficiency
Reducing fertilizer losses
Reducing pesticide dependence
Improving soil health
Increasing climate resilience
Improving nutritional quality
Reducing post-harvest losses
The focus is therefore gradually shifting from maximum production toward efficient and sustainable production.
44. The Most Important Future Questions
Several questions will shape agricultural biotechnology over the coming years:
Can crops maintain yield under climate stress?
Can disease resistance remain durable?
Can fertilizer use become more efficient?
Can crops provide better nutritional quality?
Can genome editing be made accessible to more crops?
Can regulatory systems keep pace with technology?
Can smallholder farmers benefit from advanced biotechnology?
Can AI accelerate crop improvement without reducing scientific oversight?
The answers will determine how biotechnology contributes to future food systems.
45. Overall Outlook
Agricultural biotechnology has moved through several major technological eras.
The first era emphasized:
Transgenic insect resistance and herbicide tolerance.
The second emphasized:
Trait stacking and expanded global adoption.
The emerging era emphasizes:
Precision genome editing, genomics, AI, and climate-resilient agriculture.
The future will likely involve increasing integration among these technologies.
Part 11 Summary
The future of agricultural biotechnology is moving beyond the traditional GM crop model.
CRISPR is enabling targeted genome modification.
Base editing allows specific nucleotide changes.
Prime editing expands the potential range of precise genetic modifications.
Genomics and AI can accelerate gene discovery and breeding decisions.
High-throughput phenotyping can provide large amounts of field data.
Speed breeding can shorten generation times.
Together, these technologies are creating a new model of precision crop improvement.
However, technological capability alone will not determine success.
Future agricultural biotechnology will also depend on:
Safety
Regulation
Farmer access
Economic viability
Environmental sustainability
Public acceptance
Ethical responsibility
The long-term goal is not simply to create more genetically modified crops.
It is to develop crops that can produce nutritious food efficiently while using fewer resources and remaining productive under increasingly challenging environmental conditions.
The next part will bring the article together with a global comparison of major commercial biotech crops, countries, traits, adoption patterns, benefits, limitations, and the transition toward gene-edited agriculture, followed by a consolidated conclusion and key takeaways.
Part 12 – Global Comparison of Commercial Biotech Crops
Introduction
The global biotechnology crop landscape is not uniform.
Different countries have adopted different crops, traits, and technologies according to their agricultural needs, regulatory systems, environmental conditions, and market structures.
The four crops that have historically dominated commercial GM cultivation are:
Soybean
Maize
Cotton
Canola
Other crops, including papaya, squash, sugar beet, potato, eggplant, and several additional crops, have also received commercial biotechnology approvals in different countries.
The characteristics of commercial adoption vary considerably between regions.
1. Major Commercial Biotech Crops
The global commercial biotechnology landscape can be broadly divided into several categories.
Soybean
Major traits include:
Herbicide tolerance
Stacked herbicide-tolerance traits
Other emerging agronomic traits
Maize
Major traits include:
Bt insect resistance
Herbicide tolerance
Stacked insect-resistance and herbicide-tolerance traits
Cotton
Major traits include:
Bt insect resistance
Herbicide tolerance
Stacked traits
Canola
Major traits include:
Herbicide tolerance
Quality-related traits in selected products
2. Soybean
Soybean is one of the most widely cultivated biotech crops in the world.
The major driver of adoption has historically been herbicide tolerance.
Biotech soybean has become particularly important in:
United States
Brazil
Argentina
Paraguay
Uruguay
Canada
The technology has been integrated into large-scale soybean production systems.
3. Maize
Biotech maize represents another major component of global GM agriculture.
Important traits include:
Bt insect resistance
and
Herbicide tolerance
Modern commercial hybrids can contain multiple stacked traits.
Biotech maize is widely cultivated in countries including:
United States
Brazil
Argentina
Canada
South Africa
Philippines
Spain
Other approved markets
4. Cotton
Cotton biotechnology has focused strongly on insect protection.
Bt cotton has been adopted extensively in several major cotton-producing countries.
Important markets have included:
India
United States
China
Pakistan
Argentina
South Africa
The primary objective has been protection against economically important insect pests.
5. Canola
Biotech canola has been particularly important in Canada.
Herbicide-tolerant varieties have provided additional weed-management options.
Commercial biotech canola has also been cultivated in countries such as:
United States
Australia
Canada
The adoption pattern reflects the importance of canola in large-scale agricultural systems.
6. Commercial GM Crops Beyond the Four Major Crops
Although soybean, maize, cotton, and canola dominate global GM cultivation, other crops have also been developed.
Examples include:
Papaya
Squash
Potato
Sugar beet
Eggplant
Apple
The traits vary considerably.
For example, biotechnology has been used for:
Virus resistance
Insect resistance
Quality modification
Browning reduction
Processing characteristics
7. Virus-Resistant Papaya
Virus-resistant papaya provides an important example of biotechnology being used to address a specific disease problem.
Papaya ringspot virus caused serious production problems in certain regions.
Biotechnology was used to develop resistant papaya varieties.
This demonstrates that GM technology is not limited to herbicide tolerance and insect resistance.
8. Bt Eggplant
Bt eggplant represents an important example of insect-resistant biotechnology developed for a vegetable crop.
The technology was designed to protect eggplant from major insect pests.
Bangladesh became an important example of commercial Bt eggplant cultivation.
This demonstrates how biotechnology can be applied to crops that are important for local food systems rather than only major global commodities.
9. Biotech Potato
Potato biotechnology has included traits designed to improve specific agricultural or quality characteristics.
Depending on the product, objectives can include:
Insect protection
Disease-related traits
Reduced bruising
Reduced browning
Processing quality
The commercial status of individual products differs among countries.
10. Biotech Apple
Some genetically engineered apple varieties have been developed with reduced browning characteristics.
The purpose is to reduce enzymatic browning after cutting or handling.
This illustrates another direction of biotechnology:
consumer-oriented quality traits
rather than traits focused primarily on field pest management.
11. Sugar Beet
Herbicide-tolerant sugar beet represents another important commercial biotechnology crop.
The technology can provide additional weed-management options in sugar beet production.
The crop is particularly important in North American agriculture.
12. Global Crop Adoption Is Trait-Driven
One of the most important observations from the history of biotechnology is that adoption is often driven by the usefulness of a particular trait.
Farmers are more likely to adopt a technology when it addresses a major production problem.
Examples include:
Bt cotton → insect pressure
Bt maize → insect pressure
Herbicide-tolerant soybean → weed management
Virus-resistant papaya → disease pressure
This explains why some biotechnology crops have achieved widespread adoption while others remain limited.
13. Country Comparison: United States
The United States has been one of the largest adopters of agricultural biotechnology.
Commercial biotechnology has been used extensively in:
Soybean
Maize
Cotton
Canola
Sugar beet
Selected specialty crops
The US agricultural system has also become an important environment for the development and commercialization of new genome-editing technologies.
14. Country Comparison: Brazil
Brazil has become one of the world's most important producers of biotech crops.
Major biotech crops include:
Soybean
Maize
Cotton
Large-scale commercial agriculture and substantial soybean and maize production have contributed to widespread adoption.
Brazil has also developed significant research and regulatory capacity in agricultural biotechnology.
15. Country Comparison: Argentina
Argentina has been an important early adopter of GM soybean and other biotech crops.
Its agricultural system has made extensive use of:
Herbicide-tolerant soybean
Biotech maize
Biotech cotton
Argentina's experience demonstrates how biotechnology can become integrated into large-scale commodity production.
16. Country Comparison: Canada
Canada is particularly important for biotech canola.
Commercial biotechnology has also been used in:
Maize
Soybean
The widespread cultivation of herbicide-tolerant canola has made biotechnology a major part of Canadian oilseed production.
17. Country Comparison: India
India's commercial biotechnology experience is dominated by Bt cotton.
Bt cotton has been cultivated extensively since its commercial introduction.
The technology has transformed the country's cotton production system, although its effects on yield, profitability, pest management, and farmer economics have varied according to region and management practices.
India is also investing heavily in:
Genomics
Marker-assisted breeding
CRISPR
Gene editing
Molecular diagnostics
18. Country Comparison: China
China has developed extensive research capabilities in agricultural biotechnology.
Its biotechnology activities include:
GM crop research
Bt cotton
Genome editing
Molecular breeding
Genomics
China has also developed a substantial public research infrastructure for crop improvement.
19. Country Comparison: South Africa
South Africa has been an important adopter of GM crops in Africa.
Commercial biotechnology has included:
Maize
Soybean
Cotton
The country has therefore played a significant role in the development of biotechnology agriculture on the African continent.
20. Country Comparison: Australia
Australia has commercial experience with biotech crops, particularly canola.
The country has also developed significant research capabilities in:
Plant genomics
Molecular breeding
Gene editing
Crop improvement
Regulatory requirements vary depending on the technology and intended application.
21. Country Comparison: Spain
Spain has historically been the most important EU country for commercial cultivation of Bt maize.
Its experience is particularly significant because it demonstrates that commercial GM cultivation can occur within the European regulatory environment.
However, the scale of cultivation in Europe remains much smaller than in the Americas.
22. Countries That Import but Do Not Widely Cultivate GM Crops
Some countries participate in biotechnology agriculture primarily through international trade.
They may import:
Soybean
Soybean meal
Maize
Canola products
for:
Animal feed
Food processing
Industrial uses
This distinction is important when interpreting global GM crop statistics.
A country can be a major consumer or importer of GM commodities without being a major producer.
23. Global GM Crop Adoption by Trait
Historically, the most important commercial traits have been:
Herbicide tolerance
Designed to provide tolerance to particular herbicides.
Insect resistance
Often based on Bt proteins.
Virus resistance
Used in selected crops such as papaya.
Quality modification
Designed to alter characteristics relevant to food or processing.
Stacked traits
Combine multiple characteristics within the same crop variety or hybrid.
24. Herbicide-Tolerant Crops
Herbicide tolerance has been one of the strongest drivers of commercial GM adoption.
The technology can simplify weed management by allowing the crop to survive a particular herbicide while susceptible weeds are controlled.
However, repeated reliance on the same herbicide mode of action can select for resistant weeds.
Therefore, herbicide-tolerant crops should be integrated into diversified weed-management systems.
25. Insect-Resistant Crops
Bt crops have provided another major biotechnology application.
The plant produces specific insecticidal proteins that target susceptible pests.
Potential benefits include:
Reduced crop damage
Improved yield protection
Reduced need for some insecticide applications
Simplified pest management
However, resistance evolution remains a major stewardship concern.
26. Stacked Traits
Stacked traits represent an important development in commercial biotechnology.
A single hybrid may contain multiple genetic characteristics.
For example:
Insect resistance + herbicide tolerance
A more complex product may contain multiple insecticidal proteins together with one or more herbicide-tolerance traits.
The objective is to provide broader agronomic utility.
27. Economic Benefits
The economic effects of biotechnology vary according to crop, country, trait, pest pressure, management system, and market conditions.
Potential benefits can include:
Yield protection
Reduced crop losses
Lower insecticide costs
Improved weed management
Reduced labor requirements
Greater flexibility in farm operations
However, these benefits should not be assumed to occur equally in every production environment.
28. Environmental Considerations
Potential environmental benefits can include:
Reduced insecticide use in certain systems
Reduced fuel use from some pest-control operations
Improved weed-management efficiency
Reduced crop losses
Potential conservation-agriculture interactions
At the same time, environmental challenges can include:
Insect resistance
Herbicide-resistant weeds
Gene-flow considerations
Effects associated with agricultural intensification
Therefore, environmental assessment must remain crop- and system-specific.
29. Biotechnology and Greenhouse Gas Emissions
Agricultural biotechnology can influence greenhouse gas emissions indirectly.
For example, changes in:
Fuel consumption
Tillage
Crop protection
Yield
Land use
can affect the overall carbon footprint of crop production.
However, biotechnology should not automatically be described as a universal solution to climate change.
Its environmental impact depends on how the technology is used within the complete production system.
30. Biotechnology and Land Use
Improving productivity per unit of land can potentially reduce pressure to expand agricultural land.
If a crop produces more usable output on existing farmland, additional land conversion may potentially be avoided.
However, land-use effects are complex and depend on:
Commodity prices
Farmer behavior
Market demand
Production systems
Regional land availability
Therefore, biotechnology's land-use effects require careful analysis.
31. Biotechnology and Water Use
GM or gene-edited crops may contribute indirectly to water-use efficiency when traits improve:
Drought tolerance
Root development
Water-use efficiency
Yield stability under water stress
However, irrigation efficiency, soil management, rainfall, and agricultural practices remain major determinants of water use.
32. Biotechnology and Food Security
Agricultural biotechnology can contribute to food security through:
Yield protection
Pest resistance
Disease resistance
Climate adaptation
Nutritional improvement
Reduced food losses
However, food security depends on much more than crop genetics.
It also depends on:
Infrastructure
Food distribution
Farmer income
Market access
Storage
Political stability
Water availability
Biotechnology is therefore one component of a broader food-security strategy.
33. Biotechnology and Sustainable Intensification
A major future objective is sustainable intensification.
This means increasing agricultural output while attempting to reduce unnecessary environmental pressure.
Potential biotechnology contributions include:
Higher productivity
Better pest management
Improved nutrient efficiency
Climate resilience
Reduced losses
The success of this approach depends on integrating genetics with good agricultural management.
34. GM Crops and Gene-Edited Crops: A Changing Landscape
The global agricultural biotechnology landscape is now becoming more diverse.
Established technologies
Transgenic GM crops
Bt crops
Herbicide-tolerant crops
Stacked traits
Emerging technologies
CRISPR-Cas systems
Base editing
Prime editing
Multiplex editing
Synthetic biology
AI-assisted breeding
This means that future statistics on "biotech crops" may increasingly include technologies that are regulated differently from conventional transgenic crops.
35. Why Future Statistics May Become More Difficult to Compare
Historical GM crop statistics are relatively straightforward because commercial GM cultivation has traditionally been concentrated in major crops.
The emergence of gene editing complicates the picture.
A country may permit a particular gene-edited crop without classifying it under the same regulatory category as a transgenic GM crop.
Consequently, future international comparisons will need to distinguish between:
GM crops
gene-edited crops
conventionally bred crops developed using molecular tools
and potentially other categories.
36. A New Era of Agricultural Biotechnology
The global agricultural biotechnology story can now be viewed as a transition.
First generation
Single-trait GM crops
↓
Second generation
Stacked GM crops
↓
Third generation
Precision genome editing
↓
Fourth generation
AI + genomics + genome editing + high-throughput phenotyping
This progression reflects increasing precision and integration rather than the complete replacement of previous technologies.
37. Global Lessons From Three Decades of Biotechnology
Several important lessons have emerged.
Lesson 1
Adoption depends strongly on whether a technology solves a real agricultural problem.
Lesson 2
Regulation strongly influences commercialization.
Lesson 3
Farmer economics influence adoption.
Lesson 4
Resistance management is essential for long-term effectiveness.
Lesson 5
Different countries can make different policy choices regarding the same technology.
Lesson 6
Public acceptance is influenced by more than scientific evidence alone.
Lesson 7
No biotechnology trait is a universal solution.
38. What Farmers Should Consider
Farmers evaluating a biotechnology crop should consider:
Local pest pressure
Weed spectrum
Disease pressure
Seed cost
Expected yield benefit
Crop price
Management requirements
Resistance risks
Regulatory status
Market acceptance
The best technology is not necessarily the newest technology.
It is the technology that provides an appropriate solution under the specific production conditions.
39. What Researchers Should Consider
Researchers developing future biotechnology crops should consider:
Biological mechanism
Editing efficiency
Genetic stability
Off-target effects
Trait performance
Environmental effects
Agronomic value
Regulatory requirements
Farmer needs
A successful molecular modification must ultimately translate into a useful agricultural characteristic.
40. What Regulators Should Consider
Regulators face the challenge of maintaining safety while accommodating rapidly evolving technologies.
Important considerations include:
Scientific evidence
Product characteristics
Environmental exposure
Food/feed safety
Appropriate risk assessment
Proportional regulation
Transparency
The regulatory framework must remain capable of evaluating both established and emerging technologies.
41. What Consumers Should Consider
Consumers encountering biotechnology claims should ask:
What crop is being discussed?
What genetic change was made?
What trait does it produce?
Where is the product approved?
What scientific evidence is available?
Is the claim based on a single study or a broader body of evidence?
These questions can help distinguish scientific information from generalized claims.
42. The Importance of Reliable Information
Agricultural biotechnology is a rapidly changing field.
Information from older publications can remain valuable for historical context but may not accurately represent:
Current approvals
Current global cultivation areas
Current regulatory policies
New gene-editing technologies
Recent commercial products
Therefore, updated information should be checked against current scientific and regulatory sources when publishing a modern version of this article.
43. Global Biotechnology at a Glance
The overall picture can be summarized as follows:
| Area | Major Development |
|---|---|
| Soybean | Herbicide tolerance and stacked traits |
| Maize | Bt, herbicide tolerance and stacked traits |
| Cotton | Bt insect resistance and stacked traits |
| Canola | Herbicide tolerance and other selected traits |
| Papaya | Virus resistance |
| Eggplant | Bt insect resistance |
| Potato | Quality and agronomic traits |
| Sugar beet | Herbicide tolerance |
| Apple | Reduced browning |
| Emerging crops | Increasing interest in genome editing |
44. The Transition Toward Precision Agriculture
Agricultural biotechnology is increasingly becoming connected with precision agriculture.
The future system may integrate:
Genomic data
Field sensors
Satellite imagery
Drone imaging
AI
Automated phenotyping
Genome editing
Digital farm management
This integration could allow breeding and farm management decisions to become increasingly data-driven.
45. The Long-Term Vision
The long-term objective of agricultural biotechnology is not simply to create more GM crops.
A broader objective is to develop better-adapted crops for changing agricultural environments.
Future crops may be designed or selected for:
Better disease resistance
Better water-use efficiency
Improved nutrient-use efficiency
Greater heat tolerance
Improved nutritional quality
Reduced post-harvest losses
Stable yield under environmental stress
This represents a shift from simply modifying crops toward precision crop design and improvement.
46. Final Perspective
Three decades of commercial biotechnology have demonstrated that genetic technologies can become important components of agricultural production when they provide clear value.
The first generation of GM crops focused primarily on insect protection and weed management.
The next generation increasingly combines multiple traits.
The emerging generation uses genome editing, base editing, prime editing, genomics, AI, and advanced phenotyping.
The future agricultural system will likely contain all of these technologies simultaneously.
Part 12 Summary
Global commercial biotechnology is dominated by soybean, maize, cotton, and canola, while several other crops have been developed with specialized traits.
The major historical traits include:
Herbicide tolerance
Insect resistance
Virus resistance
Quality modification
Stacked traits
The United States, Brazil, Argentina, Canada, India, China, South Africa, Australia, Spain, and several other countries have played important roles in the global biotechnology landscape.
However, commercial adoption is influenced by much more than scientific capability.
It depends on:
Agronomic value + economics + regulation + environment + farmer adoption + market demand
The emergence of CRISPR, base editing, prime editing, AI, and genomics is now expanding the biotechnology toolbox.
The next generation of agriculture will therefore likely combine established GM technologies with increasingly precise genome-editing and data-driven breeding approaches.
This transition could help breeders address some of the most important challenges facing agriculture, including climate stress, disease, resource limitations, nutrition, and food security.
But biotechnology will remain one component of agriculture rather than a universal solution.
Its greatest potential will be realized when genetic innovation is combined with responsible regulation, sound agronomy, environmental stewardship, farmer participation, and evidence-based decision making.
Part 13 – Key Takeaways, Timeline, and Conclusion
1. Key Takeaways From the Global Biotech Crop Experience
The history of commercial agricultural biotechnology provides several important lessons.
1.1 Biotechnology adoption is problem-driven
Farmers generally adopt a technology when it provides a practical solution to an important production problem.
Examples include:
Insect-resistant maize and cotton for insect control
Herbicide-tolerant soybean and canola for weed management
Virus-resistant papaya for disease protection
Quality-improved crops for specific food or processing characteristics
Therefore, the success of a biotechnology crop depends strongly on its usefulness in a particular agricultural system.
2. Adoption Is Different From Approval
One of the most important distinctions in biotechnology is the difference between regulatory approval and commercial cultivation.
A crop may be:
Developed by researchers
Approved for cultivation
Approved for food or feed use
Imported into a country
Cultivated commercially
Exported to another country
These are different regulatory and agricultural events.
Therefore, a country appearing in a list of countries that have approved a GM crop does not necessarily mean that the crop is widely cultivated there.
3. Cultivation and Consumption Are Also Different
A country can consume large quantities of commodities derived from biotech crops without cultivating those crops domestically.
For example, countries may import:
Soybean
Soybean meal
Maize
Canola products
for food, feed, or industrial processing.
Consequently, global GM crop cultivation statistics should not be interpreted as global GM food consumption statistics.
4. Why Soybean, Maize, Cotton and Canola Became Dominant
The dominance of these crops is not accidental.
They combine:
Large cultivated areas
Major international markets
Strong breeding infrastructure
Significant pest or weed-management challenges
Established seed industries
Large-scale commercial production
This created favorable conditions for the commercialization of biotechnology traits.
5. The Importance of Stacked Traits
Commercial biotechnology has evolved from single traits toward combinations of traits.
A modern crop may contain multiple characteristics that provide:
Insect protection
Herbicide tolerance
Protection against several pest species
Additional agronomic characteristics
Stacking allows multiple traits to be combined within a single breeding product.
However, stacked products also require careful stewardship and regulatory assessment.
6. Resistance Management
One of the most important long-term challenges is biological resistance.
Insect resistance
Repeated exposure to the same insecticidal trait can place selection pressure on pest populations.
Herbicide resistance
Repeated use of the same herbicide mode of action can select for resistant weed populations.
Therefore, biotechnology traits should be incorporated into integrated management programs.
Important strategies can include:
Crop rotation
Trait rotation
Herbicide mode-of-action rotation
Refuge strategies where appropriate
Integrated pest management
Monitoring of resistance
7. Biotechnology Does Not Eliminate the Need for Good Agronomy
A biotechnology crop is still a crop.
Its performance depends on:
Soil
Water
Fertility
Weather
Pest pressure
Disease pressure
Planting time
Crop management
Genetic background
A biotechnology trait can provide an additional advantage, but it cannot compensate for every agronomic limitation.
8. Economic Benefits Depend on Local Conditions
The economic performance of a biotech crop can vary between locations and seasons.
Factors include:
Seed price
Crop price
Pest pressure
Weed pressure
Yield potential
Labor costs
Input prices
Management practices
Therefore, economic conclusions should preferably be based on region-specific data rather than generalized assumptions.
9. Environmental Benefits and Trade-Offs
Agricultural biotechnology can provide environmental benefits in some production systems.
Potential benefits may include:
Reduced insecticide use
Reduced fuel consumption
Improved weed-management efficiency
Better yield protection
Potential land-use benefits
At the same time, possible challenges include:
Insect resistance
Herbicide-resistant weeds
Gene-flow concerns
Changes in agricultural management
Effects associated with intensive production
A balanced assessment should consider both benefits and potential risks.
10. The European Experience
Europe provides an important example of how scientific technology, agricultural policy, regulation, economics, and public opinion can interact.
The European Union has historically maintained a more restrictive regulatory environment for GM crops than several major producing countries outside Europe.
At the same time, some European countries have cultivated approved GM crops.
Spain has been particularly important in the cultivation of Bt maize.
This demonstrates that adoption patterns can vary considerably even among countries belonging to the same economic and regulatory region.
11. Spain and Bt Maize
Spain provides a useful case study for commercial GM maize cultivation in Europe.
Bt maize was developed to provide protection against important lepidopteran pests.
Its adoption in Spain has been influenced by:
Local pest pressure
Farm economics
Crop-management practices
Availability of approved varieties
Regulatory conditions
The Spanish experience is therefore useful when examining how biotechnology can function within a highly regulated agricultural market.
12. Africa and Agricultural Biotechnology
African countries have increasingly examined biotechnology as a potential tool for improving food production.
The major objectives include:
Insect resistance
Disease resistance
Drought tolerance
Nutritional improvement
Yield protection
South Africa has a long history of commercial GM crop cultivation.
Other African countries have developed or evaluated biotechnology crops according to their own agricultural and regulatory priorities.
The African biotechnology landscape remains diverse and continues to evolve.
13. Asia and Agricultural Biotechnology
Asia represents a major part of the global agricultural biotechnology landscape.
Important examples include:
Bt cotton in India
Bt cotton in China
Biotech crops in the Philippines
Bt eggplant in Bangladesh
Asian agriculture is particularly important because of its large farming population and diverse crop systems.
Future biotechnology applications in Asia may increasingly focus on:
Climate resilience
Disease resistance
Nutritional quality
Smallholder crops
Precision breeding
14. Latin America and Biotechnology
Latin America has become one of the world's major biotechnology crop-producing regions.
Brazil and Argentina are particularly important.
Major crops include:
Soybean
Maize
Cotton
Large-scale agriculture, export markets, and established biotechnology industries have contributed to high adoption.
15. North America
North America has played a foundational role in the commercialization of agricultural biotechnology.
The United States and Canada have extensive experience with:
GM soybean
GM maize
GM cotton
GM canola
Sugar beet
Selected specialty crops
The region is also an important center for the development of genome-editing technologies.
16. Australia
Australia has developed commercial biotechnology crops while maintaining a strong research focus on crop improvement.
Canola has been particularly important.
Future opportunities may include:
Drought tolerance
Heat tolerance
Disease resistance
Gene editing
Genomic breeding
The country's variable climate makes stress-resilience traits particularly relevant.
17. The Transition From GM to Genome Editing
The agricultural biotechnology field is now entering a new stage.
Traditional GM technology often involves introducing genetic material that may originate from another organism.
Genome editing can instead make targeted modifications within the plant's existing genome.
This distinction has contributed to new approaches to regulation and commercialization in some countries.
However, regulatory treatment differs among jurisdictions.
18. CRISPR and the New Breeding Era
CRISPR has expanded the possibilities available to plant breeders.
Potential applications include:
Gene knockout
Gene regulation
Targeted sequence modification
Multiplex editing
Disease resistance
Quality improvement
Stress tolerance
The technology is particularly attractive because it can target specific genomic locations.
19. Base Editing and Precision Nucleotide Changes
Base editing takes precision one step further for certain types of mutations.
Instead of creating a conventional DNA double-strand break, some base editors directly convert one nucleotide into another.
This is particularly useful when the desired trait depends on a specific nucleotide substitution.
20. Prime Editing and Expanded Editing Possibilities
Prime editing is being investigated as a method for making a broader range of precise genetic changes.
Potential applications include:
Small substitutions
Small insertions
Small deletions
The technology remains an active research area, and practical efficiency varies among plant species and target sites.
21. AI-Driven Crop Improvement
Artificial intelligence is increasingly becoming part of the crop-improvement pipeline.
AI can assist with:
Genome analysis
Candidate gene identification
Trait prediction
Guide-RNA design
Phenotype prediction
Breeding decisions
The greatest potential may come from combining AI with large genomic and phenotypic datasets.
22. From Genotype to Phenotype
A central challenge in plant science is understanding how genetic changes influence observable traits.
The relationship can be represented as:
Genotype
↓
Gene expression
↓
Biological pathway
↓
Physiological response
↓
Phenotype
↓
Agronomic performance
Genome editing can modify the first stages of this pathway, but successful agriculture ultimately depends on the final phenotype under field conditions.
23. Field Testing Remains Essential
A molecularly successful plant is not automatically an agricultural success.
Edited or GM lines must be evaluated for:
Growth
Yield
Stability
Disease response
Pest response
Quality
Environmental performance
Multi-location field testing is particularly important because plant traits can behave differently under different environmental conditions.
24. The Role of Molecular Breeding
Molecular breeding provides the bridge between biotechnology and conventional crop improvement.
Important tools include:
SSR markers
SNP markers
KASP markers
Marker-assisted selection
Genomic selection
QTL mapping
Genome-wide association studies
DNA fingerprinting
These technologies can help breeders identify desirable genetic combinations more efficiently.
25. Integrated Crop Improvement
The future breeding pipeline is therefore likely to be highly integrated.
A modern program may combine:
Germplasm
↓
Genotyping
↓
Marker discovery
↓
Phenotyping
↓
Candidate-gene identification
↓
Genome editing
↓
Speed breeding
↓
Field evaluation
↓
Product development
This represents a transition from traditional selection toward data-supported precision breeding.
26. Biotechnology and Food Quality
Future biotechnology will increasingly address characteristics that consumers and food industries value.
Potential targets include:
Shelf life
Flavor
Texture
Nutritional composition
Processing quality
Reduced browning
Reduced food waste
This could expand biotechnology beyond traditional agricultural input traits.
27. Biotechnology and Animal Feed
Many commercial biotech crops are important components of animal-feed systems.
Soybean and maize are particularly significant.
Biotechnology can influence feed production by:
Protecting yield
Improving crop quality
Reducing crop losses
Modifying nutritional characteristics
Therefore, the effects of biotech crops extend beyond direct human food consumption.
28. Biotechnology and Industrial Agriculture
Some crops are also used for industrial purposes.
Potential applications include:
Biofuel production
Industrial oils
Starch
Biomaterials
Bioprocessing
Biotechnology can modify crop characteristics to make agricultural products more suitable for particular industrial applications.
29. The Role of Public Research
Public-sector research remains important because many agricultural problems do not provide immediate commercial returns.
Public research can focus on:
Orphan crops
Smallholder agriculture
Climate resilience
Disease resistance
Nutritional improvement
Food security
Public institutions can also contribute to independent safety and environmental research.
30. Intellectual Property
Modern agricultural biotechnology is closely connected with intellectual property.
Patents and other forms of intellectual-property protection can influence:
Technology development
Commercial investment
Seed access
Licensing
Research partnerships
At the same time, intellectual-property systems need to be considered alongside farmer access and public-interest research.
31. Farmer Choice
A sustainable biotechnology system should provide farmers with appropriate choices.
Farmers should be able to evaluate technologies according to:
Agronomic performance
Economic return
Local conditions
Market requirements
Regulatory status
Management requirements
The technology should support farmer decision-making rather than replace it.
32. Consumer Communication
Public communication is one of the most important aspects of agricultural biotechnology.
Scientific information should clearly explain:
What genetic modification was made
Why it was made
What trait it produces
Where it is approved
What evidence supports its safety
What uncertainties remain
Clear communication is more useful than either exaggerated promotion or generalized fear.
33. Evidence-Based Evaluation
Biotechnology claims should be evaluated using multiple forms of evidence.
Useful evidence may include:
Peer-reviewed research
Regulatory assessments
Field trials
Long-term monitoring
Agricultural statistics
Economic studies
Environmental assessments
No single study should automatically be treated as the complete answer to a complex agricultural question.
34. A Practical Framework for Evaluating a Biotech Crop
A biotech crop can be evaluated using six major questions:
Question 1
What genetic change was introduced or edited?
Question 2
What biological trait does the change produce?
Question 3
Does the trait provide an agronomic benefit?
Question 4
What are the economic effects?
Question 5
What environmental considerations exist?
Question 6
What regulatory and market conditions apply?
This framework provides a balanced way to understand biotechnology crops.
35. What the Global Experience Shows
The global experience demonstrates that agricultural biotechnology is neither a single technology nor a single agricultural model.
It includes:
Different crops
Different traits
Different countries
Different regulatory systems
Different farmer needs
Different economic conditions
Therefore, statements about "GM crops" should always specify the crop, trait, country, and production context whenever possible.
36. 30-Year Biotechnology Timeline
1990s
Commercial agricultural biotechnology begins expanding rapidly.
1996
Major commercial GM crops such as herbicide-tolerant soybean and Bt maize become established in North American agriculture.
Late 1990s
GM crops expand across parts of Latin America, Asia, and other regions.
2000s
Stacked traits become increasingly important.
2010s
Biotechnology adoption continues in major commodity crops while new specialty traits emerge.
2012 onward
CRISPR technology transforms genome-editing research.
Late 2010s
Base editing and other precision-editing technologies expand the genome-engineering toolbox.
2020s
Prime editing, AI-assisted breeding, high-throughput phenotyping, and advanced genomics increasingly converge with crop improvement.
Mid-2020s onward
Agricultural biotechnology increasingly moves toward integrated precision breeding and climate-resilient crop development.
37. Looking Toward 2030 and Beyond
The next phase of agricultural biotechnology is likely to focus on several major priorities.
Climate resilience
Crops that maintain productivity under heat, drought, salinity, and other environmental stresses.
Resource efficiency
Improved use of water, nitrogen, phosphorus, and other agricultural inputs.
Disease resistance
More durable resistance against emerging and evolving pathogens.
Nutrition
Crops with improved nutritional composition.
Precision breeding
More targeted genetic changes with shorter breeding timelines.
Digital integration
Greater integration of genomics, AI, sensors, and phenotyping.
38. What May Change by the Next Decade
The agricultural biotechnology industry may increasingly move from asking:
"Can we genetically modify this crop?"
to:
"Which precise genetic change will produce the desired agricultural trait?"
This represents an important conceptual shift.
The objective becomes increasingly focused on understanding biological mechanisms and making targeted modifications.
39. What May Remain the Same
Despite technological advances, several fundamentals will remain important.
Successful crops will still need:
High agronomic performance
Farmer acceptance
Economic value
Stable inheritance
Environmental suitability
Regulatory approval
Market acceptance
Technology can accelerate crop development, but it cannot eliminate these requirements.
40. Final Conclusion
Agricultural biotechnology has developed from a relatively small group of commercial GM traits into a broad technological ecosystem.
The first major wave of commercial biotechnology introduced traits such as insect resistance and herbicide tolerance into major crops.
These technologies became particularly important in soybean, maize, cotton, and canola.
Over time, biotechnology expanded into specialized applications involving disease resistance, quality improvement, nutritional characteristics, and other traits.
The emergence of CRISPR and related technologies has now opened a new chapter.
Genome editing, base editing, prime editing, genomics, AI, speed breeding, and high-throughput phenotyping are increasingly being integrated into crop-improvement programs.
The resulting approach can be described as precision agricultural biotechnology.
Its objective is not simply to produce genetically modified crops.
The broader objective is to develop crops that are:
More productive
More resilient
More resource-efficient
More nutritious
More adaptable to climate change
More sustainable
At the same time, agricultural biotechnology must be evaluated responsibly.
Scientific evidence, environmental assessment, farmer economics, regulatory requirements, consumer communication, and ethical considerations all remain important.
The global experience demonstrates that biotechnology is most effective when it addresses a clearly defined agricultural problem and is integrated with appropriate agronomic management.
41. Final Key Message
The future of agricultural biotechnology will not be defined by one technology.
It will be defined by the integration of technologies.
Conventional breeding
Molecular markers
Genomics
GM technology
CRISPR
Base editing
Prime editing
Artificial intelligence
High-throughput phenotyping
Speed breeding
Together, these technologies have the potential to transform how new crop varieties are discovered, developed, tested, and commercialized.
The central challenge for the coming decades will be to use these technologies responsibly to help produce sufficient, nutritious, affordable, and sustainable food for a growing population under increasingly difficult environmental conditions.
42. Article-Wide Conclusion
The history of commercial biotech crops shows that agricultural biotechnology has already become an important component of modern agriculture.
However, its future may be even broader.
The transition from traditional GM traits toward precision genome editing represents a fundamental expansion of the crop-improvement toolbox.
The next generation of agricultural biotechnology is likely to combine biological knowledge with computational technologies, allowing breeders to move more efficiently from:
Genetic variation
→ Gene discovery
→ Trait prediction
→ Precision editing
→ Rapid breeding
→ Field validation
→ Improved crop varieties
This integrated approach may become one of the most important tools available to agriculture as it responds to climate change, emerging pests and diseases, resource limitations, nutritional challenges, and global food demand.
Agricultural biotechnology should therefore be viewed not as a single technology, but as a continuously developing set of tools that can be applied according to the needs of farmers, crops, environments, and food systems.
Part 14 – Frequently Asked Questions, Glossary and Abbreviations
Frequently Asked Questions (FAQs)
1. What are genetically modified (GM) crops?
GM crops are plants whose genetic material has been modified using genetic engineering techniques to introduce, alter, or regulate specific characteristics.
2. Which are the major commercial GM crops?
The major commercially cultivated GM crops have historically included:
Soybean
Maize
Cotton
Canola
Other crops with approved biotechnology traits include papaya, squash, sugar beet, potato, eggplant, and apple in selected markets.
3. What are the most common GM crop traits?
The major commercial traits include:
Herbicide tolerance
Insect resistance
Virus resistance
Quality-related traits
Stacked traits combining multiple characteristics
4. What is Bt technology?
Bt technology uses genes derived from the bacterium Bacillus thuringiensis to provide protection against particular insect pests.
Bt crops have been developed in crops such as maize and cotton.
5. What is herbicide tolerance?
Herbicide tolerance is a crop characteristic that allows a plant to tolerate a particular herbicide while susceptible weeds are controlled.
It can provide farmers with an additional weed-management option.
6. What are stacked GM crops?
Stacked crops contain two or more biotechnology traits in the same variety or hybrid.
For example, a maize hybrid may combine insect resistance with herbicide tolerance.
7. Which countries grow the most GM crops?
Large-scale commercial biotechnology cultivation has historically been concentrated in countries such as:
United States
Brazil
Argentina
Canada
India
Paraguay
China
South Africa
The specific crops and traits cultivated vary by country and year.
8. Does every country that approves GM crops cultivate them?
No.
Regulatory approval, commercial cultivation, import approval, and food/feed approval are separate issues.
A country may permit imports of a GM crop without allowing its cultivation.
9. Can a country consume GM crops without growing them?
Yes.
Countries can import GM-derived commodities such as soybean, maize, or canola for food, animal feed, or industrial processing without commercially cultivating those crops domestically.
10. Why is soybean one of the most important GM crops?
Soybean has a large global production area and has historically benefited from herbicide-tolerance technologies.
Biotech soybean has become an important component of large-scale soybean production in several countries.
11. Why is GM maize widely cultivated?
GM maize has been developed with traits including insect resistance and herbicide tolerance.
These traits can address important production challenges in maize-growing regions.
12. Why is Bt cotton important?
Bt cotton was developed primarily to protect cotton plants against important insect pests.
It has been widely adopted in several cotton-producing countries, including India, China, the United States, and others.
13. Is GM agriculture the same as gene editing?
No.
Traditional transgenic GM technology and genome editing are related but distinct technologies.
Transgenic approaches may introduce genetic material from another organism.
Genome editing can make targeted changes to DNA at specific locations.
However, the exact distinction and regulatory classification depend on the technology and jurisdiction.
14. What is CRISPR?
CRISPR is a genome-editing technology that can be programmed to target specific DNA sequences.
CRISPR-based systems have become important tools in modern biological research and crop improvement.
15. What is CRISPR-Cas9?
CRISPR-Cas9 is a genome-editing system consisting primarily of:
Guide RNA
Cas9 nuclease
Target DNA
The guide RNA directs Cas9 toward a complementary DNA sequence.
16. What is base editing?
Base editing is a genome-editing approach that can directly convert certain DNA bases into other bases without relying on the same type of double-strand DNA break used in conventional CRISPR-Cas9 editing.
It is particularly useful for certain single-nucleotide changes.
17. What is prime editing?
Prime editing is an advanced genome-editing approach designed to make a broader range of precise DNA changes, including certain substitutions, insertions, and deletions.
It remains an active area of research, including in plants.
18. What is precision breeding?
Precision breeding refers broadly to breeding approaches that allow desirable genetic characteristics to be identified, selected, or modified with increasing accuracy.
It may involve:
Molecular markers
Genomics
Genome editing
Base editing
Prime editing
Genomic selection
Computational tools
19. Can CRISPR replace conventional plant breeding?
No.
CRISPR can complement conventional breeding but does not eliminate the need for breeding.
Edited plants still need to be evaluated for yield, quality, environmental adaptation, disease response, and other agronomic characteristics.
20. Can biotechnology improve drought tolerance?
Biotechnology can contribute to research on drought tolerance by targeting genes and pathways involved in:
Water regulation
Root development
Stress signaling
Cellular protection
However, drought tolerance is complex and is influenced by genetics, environment, and management.
21. Can biotechnology improve disease resistance?
Yes.
Genetic engineering and genome editing can be used to investigate or develop disease-resistance traits.
Potential approaches include modifying susceptibility genes or introducing resistance-related genetic characteristics.
22. Can biotechnology improve nutrition?
Yes.
Biotechnology can be used to modify pathways involved in the production or accumulation of nutrients.
Potential targets include:
Vitamins
Minerals
Amino acids
Fatty acids
Other nutritionally relevant compounds
23. Does biotechnology eliminate pesticides?
No.
Some insect-resistant crops can reduce the need for certain insecticide applications under appropriate conditions.
However, biotechnology does not eliminate the need for integrated pest management.
24. Can insects become resistant to Bt crops?
Yes.
Insect populations can evolve resistance when selection pressure is sufficiently strong.
Resistance-management strategies are therefore important for maintaining the effectiveness of Bt technology.
25. Can weeds become resistant to herbicides?
Yes.
Repeated use of the same herbicide mode of action can contribute to the evolution of herbicide-resistant weeds.
Integrated weed management is therefore important.
26. Are GM crops automatically higher yielding?
Not necessarily.
The effect of a biotechnology trait depends on the agricultural problem it addresses.
For example, an insect-resistant crop may protect yield when the target insect pest causes significant damage.
Where pest pressure is low, the yield advantage may be smaller.
27. Are all GM crops the same?
No.
Different GM crops can contain different genes, traits, genetic constructs, and intended uses.
Therefore, GM crops should be evaluated individually rather than treated as one uniform category.
28. Are all gene-edited crops regulated in the same way?
No.
Regulatory treatment varies among countries and may depend on the type of genetic change and the regulatory framework.
Some jurisdictions distinguish certain gene-edited products from conventional transgenic GM crops.
29. What role can artificial intelligence play in crop biotechnology?
AI can assist researchers with:
Genome analysis
Candidate-gene identification
Phenotype prediction
Guide-RNA design
Breeding decisions
Large-scale biological data analysis
AI is best considered a tool that supports biological research rather than a replacement for experimental validation.
30. What is the future of agricultural biotechnology?
The future is likely to involve increasing integration of:
Genomics + molecular breeding + CRISPR + base editing + prime editing + AI + high-throughput phenotyping + speed breeding
The objective will be to develop crops that are productive, resilient, nutritious, resource-efficient, and adapted to changing agricultural environments.
Glossary of Key Terms
Agricultural Biotechnology
The application of biological, genetic, molecular, and related technologies to agriculture and crop improvement.
Allele
An alternative form of a gene or genetic locus.
Base Editing
A genome-editing technology capable of making certain targeted nucleotide conversions without relying on a conventional double-strand DNA break.
Biofortification
The development of crops with improved nutritional characteristics.
Biotechnology Crop
A crop developed using one or more biotechnology approaches to introduce, modify, or select specific characteristics.
Bt
A term referring to genetic traits derived from Bacillus thuringiensis, commonly used for insect resistance.
CRISPR
A genome-editing platform that can be programmed to recognize specific DNA sequences.
CRISPR-Cas9
A CRISPR genome-editing system using guide RNA and the Cas9 nuclease.
DNA
Deoxyribonucleic acid, the molecule that stores hereditary genetic information.
Gene
A region of DNA associated with a functional biological product or regulatory function.
Gene Editing
The targeted modification of DNA sequences using molecular technologies.
Gene Flow
The movement of genetic material between populations.
Genome
The complete genetic material of an organism.
Genome Editing
A group of technologies used to make targeted modifications to genomic DNA.
Genomic Selection
A breeding approach that uses genome-wide genetic information to predict breeding value.
Genomics
The study and analysis of genomes and their organization, variation, and function.
GM Crop
A crop whose genetic material has been modified using genetic engineering.
Guide RNA
An RNA molecule used in CRISPR systems to direct a genome-editing enzyme toward a target DNA sequence.
Herbicide Tolerance
A characteristic allowing a crop to survive exposure to a specific herbicide.
Insect Resistance
A characteristic that reduces damage caused by particular insect pests.
Marker-Assisted Selection
A breeding approach in which molecular markers are used to identify plants carrying desirable genetic characteristics.
Molecular Breeding
The use of molecular genetic information to support conventional crop improvement.
Multiplex Editing
Genome editing in which multiple genomic targets are modified in a single experimental system.
Off-Target Effect
An unintended genetic modification occurring at a genomic location other than the intended target.
Phenotype
The observable characteristics of an organism resulting from genetic and environmental influences.
Prime Editing
A genome-editing technology designed to introduce a broader range of targeted DNA modifications.
Precision Breeding
An umbrella term describing breeding approaches that use advanced molecular and genetic tools to make crop improvement more targeted.
Regulatory Approval
Official authorization from a relevant authority for a biotechnology product or activity under a defined regulatory framework.
Resistance Management
Strategies designed to delay or reduce the development of resistance in pests or weeds.
Stacked Trait
Multiple biotechnology traits combined within the same crop variety or hybrid.
Synthetic Biology
An interdisciplinary field involving the design or engineering of biological systems.
Transgenic
Describing an organism containing introduced genetic material that has been transferred using genetic engineering.
Trait
A measurable characteristic of an organism, such as insect resistance, plant height, or nutritional composition.
Transformation
The introduction of foreign or engineered genetic material into a cell.
Trait Stacking
The combination of multiple desirable traits in one crop.
Yield Protection
The prevention or reduction of yield losses caused by pests, diseases, environmental stress, or other factors.
Abbreviations Used
| Abbreviation | Full Form |
|---|---|
| AI | Artificial Intelligence |
| Bt | Bacillus thuringiensis |
| Cas9 | CRISPR-associated protein 9 |
| CRISPR | Clustered Regularly Interspaced Short Palindromic Repeats |
| DNA | Deoxyribonucleic Acid |
| EU | European Union |
| GMO | Genetically Modified Organism |
| GM | Genetically Modified |
| GHG | Greenhouse Gas |
| IPM | Integrated Pest Management |
| KASP | Kompetitive Allele Specific PCR |
| MAS | Marker-Assisted Selection |
| mtDNA | Mitochondrial DNA |
| PCR | Polymerase Chain Reaction |
| QTL | Quantitative Trait Locus |
| RNA | Ribonucleic Acid |
| SNP | Single-Nucleotide Polymorphism |
| TALE | Transcription Activator-Like Effector |
| TALEN | Transcription Activator-Like Effector Nuclease |
| ZFN | Zinc Finger Nuclease |
Final Reader Takeaway
Agricultural biotechnology has progressed from early genetically engineered traits toward increasingly precise systems for understanding and modifying crop genomes.
The major commercial GM crops established the foundation for modern agricultural biotechnology.
CRISPR, base editing, prime editing, genomics, AI, and high-throughput phenotyping are now expanding that foundation.
The most important point is that no single technology should be viewed in isolation.
The future of crop improvement will increasingly depend on the integration of:
Genetic knowledge
Molecular tools
Computational analysis
Precision breeding
Field testing
Responsible regulation
Farmer needs
Environmental stewardship
Together, these approaches can contribute to the development of agricultural systems capable of producing food more efficiently while responding to climate change, emerging biological threats, nutritional challenges, and increasing global demand.
Part 15 – References and Further Reading
References
The following references provide scientific, technical, regulatory, and historical background for the discussion of commercial GM crops, agricultural biotechnology, genome editing, and precision breeding.
1. Commercial GM Crop Adoption
Brookes, G., & Barfoot, P. Studies on the global economic and environmental impacts of genetically modified crops provide important information on crop adoption, farm income, pesticide use, and greenhouse-gas emissions.
Brookes, G., & Barfoot, P. GM crop technology use and associated economic and environmental impacts. Various editions and updates.
2. GM Crops and Global Agricultural Development
International reports on the global status of commercialized biotech/GM crops provide information on:
Global cultivation area
Major biotech crops
Trait adoption
Country-level adoption
Farmer numbers
Regional trends
These reports are particularly useful for understanding historical changes in commercial GM crop adoption.
3. Bt Crops
Research on Bt crops has examined:
Insect control
Yield protection
Insecticide use
Resistance development
Resistance-management strategies
Scientific literature on Bt maize and Bt cotton provides extensive evidence regarding their agricultural performance and stewardship requirements.
4. Herbicide-Tolerant Crops
Research on herbicide-tolerant crops has focused on:
Weed-management systems
Herbicide use
Crop productivity
Weed resistance
Integrated weed management
Long-term studies are particularly important when evaluating the development of herbicide-resistant weed populations.
5. GM Maize in Spain
The experience of Bt maize cultivation in Spain provides an important European case study.
Research has examined:
Adoption of Bt maize
European corn borer pressure
Yield effects
Farm economics
Insecticide use
Environmental considerations
The Spanish experience should be interpreted within the broader European regulatory and agricultural context.
6. GM Crops in India
India's commercial experience with Bt cotton represents one of the most significant examples of biotechnology adoption in a developing agricultural economy.
Research has examined:
Bt cotton adoption
Cotton yield
Insect-pest management
Farmer economics
Insect resistance
Bollworm management
Changes in insecticide use
The outcomes can vary considerably among regions and production systems.
7. GM Crops in Brazil and Argentina
Brazil and Argentina have become major producers of biotech soybean, maize, and cotton.
Research from these countries provides information on:
Large-scale commercial adoption
Herbicide-tolerant soybean
Bt maize
Bt cotton
Farm economics
Weed management
Insect management
Export agriculture
Genome Editing References
8. CRISPR-Cas9
CRISPR-Cas9 represents one of the most important developments in modern genome engineering.
The foundational research demonstrated that CRISPR-associated systems could be adapted for programmable genome editing.
Key areas of research include:
Targeted DNA modification
Guide-RNA design
DNA repair
Gene knockout
Multiplex editing
9. CRISPR in Plants
Plant genome-editing research has demonstrated applications in:
Disease resistance
Plant architecture
Yield-related traits
Stress tolerance
Nutritional improvement
Crop quality
CRISPR has therefore become an important tool in modern plant breeding research.
10. Base Editing
Base editing expanded the genome-editing toolbox by enabling certain nucleotide conversions without requiring the same type of double-strand DNA break associated with conventional CRISPR-Cas9 editing.
Important research areas include:
Cytosine base editors
Adenine base editors
Editing efficiency
Target-window optimization
Off-target assessment
11. Prime Editing
Prime editing was developed to enable a broader range of precise DNA modifications.
Research has investigated its potential for:
Base substitutions
Small insertions
Small deletions
Precise sequence correction
Plant applications remain an active area of research.
Plant Breeding and Genomics References
12. Marker-Assisted Selection
Marker-assisted selection uses molecular markers associated with desirable genetic characteristics to improve breeding efficiency.
Common marker systems include:
SSR
SNP
KASP
Other sequence-based markers
MAS is particularly useful for traits with known genetic associations.
13. Genomic Selection
Genomic selection uses genome-wide marker information to predict the breeding value of individuals.
It can potentially accelerate breeding for complex quantitative traits.
Applications include:
Yield
Disease resistance
Stress tolerance
Quality traits
Adaptation
14. Genome-Wide Association Studies
Genome-wide association studies can identify genomic regions associated with variation in measurable traits.
They are increasingly used together with:
Genomics
Transcriptomics
Phenotyping
Candidate-gene analysis
Genome editing
Artificial Intelligence and Digital Agriculture
15. Artificial Intelligence in Crop Improvement
AI and machine-learning approaches are increasingly being investigated for:
Genomic prediction
Phenotype prediction
Candidate-gene prioritization
Image-based phenotyping
Disease detection
Breeding optimization
AI is particularly valuable when large biological datasets are available.
16. High-Throughput Phenotyping
High-throughput phenotyping uses automated or semi-automated systems to measure plant characteristics at large scale.
Technologies can include:
Digital imaging
Spectral sensors
Drones
Remote sensing
Automated plant measurement
Combining these datasets with genomic information can improve understanding of genotype–environment interactions.
Biosafety and Regulation
17. Biosafety Assessment
Biotechnology crops require appropriate assessment according to the relevant regulatory framework.
Important areas can include:
Molecular characterization
Genetic stability
Food and feed safety
Environmental assessment
Potential ecological effects
Non-target effects
Gene flow
Resistance management
18. Food and Feed Safety
Safety assessment can consider characteristics such as:
Nutritional composition
Toxicological considerations
Allergenicity
Digestibility
Intended use
Substantial changes in composition
The precise requirements differ between regulatory jurisdictions and products.
19. Environmental Risk Assessment
Environmental evaluation may consider:
Persistence
Invasiveness
Gene flow
Effects on non-target organisms
Weediness
Resistance development
Interaction with agricultural ecosystems
Risk assessment should be based on the characteristics of the specific product rather than generalized assumptions about all biotechnology crops.
Regulatory Resources
20. International Regulatory Frameworks
Readers interested in biotechnology regulation should consult the relevant national and international regulatory authorities.
Important areas include:
GM crop approval
Food and feed authorization
Environmental release
Import requirements
Gene-editing regulation
Biosafety
Because regulations change over time, current official regulatory sources should be consulted for the latest information.
Recommended Further Reading
Readers interested in agricultural biotechnology may explore the following subjects in greater depth:
Agricultural Biotechnology
History of commercial GM crops
Global adoption trends
Economic impacts
Environmental impacts
Plant Molecular Biology
Plant genomes
Gene expression
Molecular markers
Functional genomics
Genome Editing
CRISPR-Cas9
Base editing
Prime editing
Multiplex genome editing
Precision Breeding
Marker-assisted selection
Genomic selection
Speed breeding
High-throughput phenotyping
Sustainable Agriculture
Climate-resilient crops
Water-use efficiency
Nitrogen-use efficiency
Integrated pest management
Emerging Technologies
Artificial intelligence
Synthetic biology
Plant microbiomes
Digital agriculture
Important Note About References
This article combines historical information about commercial biotechnology crops with discussion of rapidly developing technologies such as CRISPR, base editing, prime editing, and AI-assisted breeding.
Because agricultural biotechnology regulations, commercial approvals, cultivation areas, and technology developments can change over time, readers should verify current information using recent peer-reviewed literature and official regulatory or institutional sources.
Historical studies remain useful for understanding how agricultural biotechnology developed, but they should not automatically be interpreted as representing the current status of a crop, technology, or regulatory decision.
Suggested Source Categories for Readers
For reliable and updated information, readers should prioritize:
Peer-reviewed scientific journals
National agricultural research organizations
Government regulatory agencies
International agricultural organizations
University research institutions
Current scientific reviews
Official biotechnology and biosafety databases
When discussing current commercial cultivation or regulatory status, recent sources should be preferred over older publications.
Final Reference Statement
Agricultural biotechnology is a rapidly evolving field. The scientific literature continues to expand from traditional transgenic technologies toward genome editing, base editing, prime editing, synthetic biology, genomics, artificial intelligence, and integrated precision breeding.
For this reason, the references used for individual sections of this article should be updated periodically to ensure that information concerning commercial approvals, cultivation areas, regulatory status, new technologies, and current research findings remains accurate.
End of Article
Global Status of Commercialized Biotech/GM Crops: From Early GM Adoption to Precision Breeding and the Future of Agricultural Biotechnology
Agricultural biotechnology has evolved from a small number of commercial traits into a broad ecosystem of genetic, molecular, computational, and breeding technologies.
The next stage will not simply be about producing more genetically modified crops.
It will be about understanding plant genomes more precisely, developing useful traits more efficiently, and integrating biotechnology with sustainable agricultural practices.
The future of crop improvement will therefore depend on the responsible integration of science, technology, breeding, agriculture, regulation, and farmer needs.
Disclaimer
The information provided on Agriculture Science 1988 is intended for educational and informational purposes only. Our content covers topics related to biotechnology, genetics, molecular biology, agriculture, plant breeding, GM crops, genome editing, laboratory techniques, and life sciences.
While we make reasonable efforts to provide accurate and updated information, scientific knowledge, technologies, regulations, and research findings can change over time. Therefore, we do not guarantee that every piece of information will always be complete, current, or applicable to every situation.
The information presented on this blog should not be considered professional medical, agricultural, legal, regulatory, financial, or scientific advice. Readers should consult qualified professionals, official regulatory authorities, peer-reviewed scientific literature, or appropriate institutions before making decisions based on the information provided.
Any opinions, interpretations, examples, or educational explanations expressed on this blog are provided for general understanding and do not necessarily represent the views of any organization, institution, employer, or research group.
References and external sources may be provided for educational purposes. We are not responsible for the content, accuracy, availability, or policies of external websites.
By using this website, you acknowledge that you are responsible for how you use the information provided.
© Agriculture Science 1988. All rights reserved.
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