Will genetically modified (GM) crops be adopted in agriculture in India?
An exercise in forecasting. Bear with me while I do a bit of math.
A 1-minute primer on GM Crops
A genetically modified (GM) crop is a crop plant whose DNA has been changed to give it a particular trait. Some common examples are insect resistance, disease resistance, drought and heat tolerance, or improved nutrition. But importantly, “GM” is not one single technology: each crop–trait combination has to be evaluated on its own merits (e.g., “Bt brinjal” is different from “herbicide-tolerant mustard”). This is why regulators and scientific bodies end up doing a lot of case-by-case assessments.
Policy debate summary: Where India is today
India’s only GM crop approved for commercial cultivation is Bt cotton, approved in 2002. (Press Information Bureau) Multiple GM food crops have been developed and tested over the years, but none have become widely commercialised nationwide.
Why advocates support adoption
Globally, GM crops have been adopted at a large scale. In 2010, they covered roughly ~10% of global cropland by area (reported by The International Service for the Acquisition of Agri-biotech Applications). Advocates argue that GM crops could help India address three recurring issues:
Crop loss from pests and disease. Insect-resistant (Bt) traits can reduce insect damage and, in many settings, reduce insecticide use. (This claim is strongest for Bt traits, not necessarily for herbicide-tolerant traits.)
Climate and water stress. Traits aimed at drought/heat tolerance could stabilise yields in increasingly variable weather.
Farm income and food security. Evidence from India’s Bt cotton experience is commonly cited: many studies find yield and income benefits, especially in earlier adoption periods, though outcomes can vary over time as pest pressures and management practices change.
Why critics oppose adoption
Critics focus on risks that may emerge slowly and are hard to reverse:
Ecological risk over decades: gene flow into related plants, changes to biodiversity, and the evolution of resistant pests/weeds if stewardship is weak.
Governance realism: even if risks are manageable in principle, they may not be manageable at India’s scale without strong monitoring and enforcement.
Socio-economic concerns: dependence on proprietary seeds and market power issues, especially for smallholders.
Trade complexity: different importing regions regulate GM products differently (e.g., stricter regimes in some markets than others), complicating export supply chains.
India’s regulatory and political bottleneck
India’s GM crop decisions are shaped as much by politics and litigation as by biology.
Bt brinjal was recommended by the Genetic Engineering Appraisal Committee (GEAC) in 2009, but the government announced an indefinite moratorium in 2010.
GM mustard has remained contentious; the Supreme Court delivered a split verdict on 23 July 2024 on aspects of approval/validity, and the matter has continued through further legal review.
Federalism adds friction: even when the Centre sets the overall biosafety framework, state-level politics strongly influence field trials and cultivation.
Forecast question
By 2035, will India’s central government approve commercial cultivation of at least three GM crops?
This forecast captures the core policy disagreement: whether India moves beyond “Bt cotton only” and approves multiple GM crops for cultivation.
Interpretation used here: Bt cotton counts as one GM crop. So the question is effectively whether India adds at least two more GM crops by 2035 (to reach three total).
Crux (the main uncertainty)
C: By 2035, the best available evidence and field experience show that material long-run ecological harms from GM crop cultivation in India are not manageable with feasible stewardship at India’s scale (e.g., resistance management, refuges, monitoring, containment/coexistence rules).
Probability forecasts
What do all these weird symbols mean?
U = “India approves commercial cultivation of at least three GM crops by 2035.”
C = “Long-run ecological harms prove unmanageable (as defined above).”
P(U) means: “How likely is U overall?”
P(U|C) means: “How likely is U if C turns out to be true?” (This is a conditional probability—an “if-then” forecast.)
Forecast table (Advocates vs Critics)
These P(U) values are implied by the others using:
Plain-language translation
Group A (Advocates)
P(U)=71%: Probability that India approves at least three GM crops by 2035.
P(C)=20%: Probability that long-run ecological harms are unmanageable in India.
P(U|C)=15%: Even if harms are unmanageable, the probability that the government still approves three GM crops.
P(U|¬C)=85%: If harms look manageable, approvals become very likely: about 85 in 100.
Group B (Critics)
P(U)=25%: Probability that India approves at least three GM crops by 2035.
P(C)=70%: Probability that harms are unmanageable in India.
P(U|C)=10%: If harms are unmanageable, approvals are very unlikely: about 10 in 100.”
P(U|¬C)=60%: If harms look manageable, approvals are still only moderately likely: about 60 in 100—because politics, trust, enforcement, and market concerns can still block approvals.
Rationale (why the forecasts differ)
Why advocates assign a high P(U)
Advocates lean on (i) global adoption precedent, (ii) expected yield and pesticide-related benefits in suitable crop–trait contexts, and (iii) the argument that improved regulation and stewardship can manage risks. Meta-analysis evidence shows average yield gains and pesticide reductions across GM crops, but with effects varying by trait and context—an important nuance for India’s policy design.
Why critics assign a low P(U)
Critics emphasise (i) the high probability that long-run ecological harms prove unmanageable in practice (high P(C)), and (ii) India’s history of political and legal barriers for GM food crops (even after technical recommendations). The Bt brinjal moratorium and extended GM mustard litigation are central examples. (GeAC India)
Why conditioning on the crux (C) helps the debate
This framing forces both sides to say what would change their mind:
If convincing evidence accumulates that ecological harms are not manageable, approvals should drop sharply (both groups’ low P(U|C)).
If harms look manageable with realistic safeguards, then the debate shifts toward governance quality, seed-market rules, and legitimacy—rather than biology alone.
References
Ministry of Agriculture & Farmers Welfare, Government of India. (2024, August 6). Cultivation of Genetically Modified Crops (Press Information Bureau). (Press Information Bureau)
Ministry of Agriculture & Farmers Welfare, Government of India. (2020, September 15). Study on Cultivation of GM Crops (Press Information Bureau). (Press Information Bureau)
James, C. (2011). Global Status of Commercialized Biotech/GM Crops: 2011 (ISAAA Brief No. 43). International Service for the Acquisition of Agri-biotech Applications (ISAAA).
Klümper, W., & Qaim, M. (2014). A meta-analysis of the impacts of genetically modified crops. PLOS ONE, 9(11), e111629.
Kathage, J., & Qaim, M. (2012). Economic impacts and impact dynamics of Bt cotton in India. Proceedings of the National Academy of Sciences, 109(29), 11652–11656.
Nicolia, A., Manzo, A., Veronesi, F., & Rosellini, D. (2014). An overview of the last 10 years of genetically engineered crop safety research. Critical Reviews in Biotechnology, 34(1), 77–88.
Carpenter, J. E. (2011). Impact of GM crops on biodiversity. GM Crops, 2(1), 7–23.
Warwick, S. I., Beckie, H. J., & Hall, L. M. (2009). Gene flow, invasiveness, and ecological impact of genetically modified crops. Annals of the New York Academy of Sciences, 1168, 72–99.
Bonny, S. (2015). Genetically modified herbicide-tolerant crops, weeds, and herbicides: Overview and impact. Environmental Management, 57, 31–48.
Gassmann, A. J., Petzold-Maxwell, J. L., Clifton, E. H., Dunbar, M. W., Hoffmann, A. M., Ingber, D. A., & Keweshan, R. S. (2014). Field-evolved resistance by western corn rootworm to multiple Bt toxins in transgenic maize. Proceedings of the National Academy of Sciences, 111(14), 5141–5146.
Pew Initiative on Food and Biotechnology. (2005). U.S. vs. EU: An Examination of the Trade Issues Surrounding Genetically Modified Food.
Jayaraman, K. (2017). Activists bury India’s GM mustard hopes. Nature Biotechnology, 35, 1124.
Genetic Engineering Appraisal Committee (GEAC). (2010). Decisions taken in the 100th meeting (references moratorium applicability). (GeAC India)
Supreme Court-related reporting/analysis on GM mustard split verdict (2024). (Drishti IAS)
Shukla, M., Al-Busaidi, K. T., Trivedi, M., & Tiwari, R. K. (2018). Status of research, regulations and challenges for genetically modified crops in India. GM Crops & Food, 9(4), 173–188.