The stakes are considerable. Agriculture still employs nearly 47 percent of India’s workforce and contributes roughly 18 percent of gross domestic product. Cotton and sugarcane sit at the heart of the country’s industrial economy: cotton feeds a textile sector that accounts for about 2.3 percent of GDP, 13 percent of industrial production, and nearly 12 percent of export earnings, while supporting more than 45 million jobs. Sugarcane underpins the second-largest agro-based industry after textiles and has become central to India’s ethanol blending program, which reached approximately 15 percent in 2024–25, reducing petroleum imports and conserving foreign exchange. Any instability in the economics of these crops therefore ripples far beyond the farm gate.

The study draws on the Comprehensive Scheme on Cost of Cultivation maintained by the Directorate of Economics and Statistics under the Ministry of Agriculture. For cotton, the analysis covers Andhra Pradesh, Gujarat, Karnataka, Maharashtra, and Punjab, which together accounted for roughly 66 percent of cultivated area and 65 percent of national production in 2021–22. For sugarcane, it covers Uttar Pradesh, Maharashtra, Karnataka, and Tamil Nadu, which together represent more than 80 percent of area and output. The dataset spans 130 cotton observations and 104 sugarcane observations across five-year intervals, allowing the researcher to isolate phase-wise transformations tied to major policy regimes.

Methodologically, the study combines descriptive statistics, compound annual growth rates, and coefficients of variation with a Cobb–Douglas production function estimated through a fixed-effects panel regression. The fixed-effects specification assigns each state its own intercept, stripping out time-invariant characteristics such as soil, climate, and agrarian structure that would otherwise bias the estimates. Cluster-robust standard errors at the state level were used for cotton, and robust standard errors for sugarcane, to guard against heteroskedasticity and serial correlation within states. The dependent variable is the value of output per hectare, encompassing both main products and by-products, while the explanatory variables capture distinct cost components including seed, labour, machinery, irrigation, and fertilizers.

The descriptive results paint a picture of relentless cost escalation. Cultivation costs rose persistently for both crops across all states, with cotton exhibiting higher growth and greater instability in paid-out costs and total cultivation costs than sugarcane. Maharashtra recorded the steepest cost growth for both crops, but also the highest volatility, a pattern the study links to recurrent droughts and volatile cotton prices. Punjab, by contrast, achieved the highest growth in cotton value of output with moderate instability, reflecting better irrigation infrastructure, market integration, and institutional support. For sugarcane, Karnataka and Tamil Nadu showed more moderate growth and lower variability, while Uttar Pradesh experienced rapid cost expansion accompanied by even greater instability.

Profitability improved over time, but the picture changes dramatically depending on which cost concept is used. When profits are measured against Cost A2, the actual paid-out expenses, farmers generally remained in the black throughout the study period. When the imputed value of family labour is added, the margins narrow. But against Cost C2, the comprehensive measure that includes the rental value of owned land, interest on fixed capital, and family labour, the results turn sobering: Andhra Pradesh, Maharashtra, and Punjab registered negative long-term growth rates in cotton profitability, while for sugarcane, Maharashtra and Tamil Nadu showed weak performance despite strong growth under simpler measures. This divergence is the classic cost-price squeeze, in which rising land values, wages, and capital charges outpace gains in gross output.

The structural decomposition of costs reveals a deeper transformation. Operational costs have grown faster than fixed costs across both crops, meaning that escalation is driven by recurring expenditures on labour, fertilizers, irrigation, and machinery services rather than capital deepening. In Maharashtra and Gujarat, operational costs exceed 70 percent of total cotton cultivation costs, leaving farmers acutely exposed to input price inflation. Human labour remains the largest cost share everywhere, but the declining share of animal labour and rising machine labour in Punjab and Gujarat signal a gradual mechanization transition. The moderation of insecticide expenditure after 2011–12 in cotton regions likely reflects the widespread adoption of Bt technology and improved pest management.

The econometric results deliver the study’s most consequential findings. For cotton, seed expenditure emerges as the dominant determinant of value of output, with an elasticity of 0.42, meaning a 1 percent increase in seed investment raises output value by 0.42 percent. Machine and animal labour follow with an elasticity of 0.30, family labour contributes 0.28, and irrigation shows a small but positive elasticity of 0.04, suggesting that water investments pay off only when complemented by better seeds, nutrients, and management. For sugarcane, casual labour cost is the most influential determinant, underscoring the crop’s labour-intensive nature across planting, weeding, harvesting, and transport. Fertilizer and manure expenditure exerts a positive influence, but irrigation spending shows a negative association with output value, a result the author attributes to inefficient water use, excessive irrigation, groundwater depletion, and poor resource allocation in water-stressed regions.

That negative irrigation coefficient challenges the conventional view of water as an unambiguously productivity-enhancing input and carries significant policy weight in a country where sugarcane is among the most water-intensive crops. The study also finds that mechanization has not yet generated substantial gains for sugarcane, with machine and animal labour coefficients statistically insignificant, possibly due to fragmented landholdings and underutilized machinery. Roughly 77 percent of the variation in sugarcane output value is attributable to state-specific factors, and the model explains about 90 percent of within-state variation over time, indicating strong explanatory power for the selected inputs.

The policy implications are clear. Improving input-use efficiency, strengthening seed systems, promoting appropriate mechanization, and enhancing irrigation management emerge as priorities for sustaining the value of output in commercial crop cultivation. For cotton, continued investment in quality seeds and hybrid technologies offers the highest return; for sugarcane, raising labour productivity through mechanization and skill development could relieve the structural constraint imposed by rising rural wages and labour scarcity. Because cost structures differ so sharply across states, the study argues that policy design must be sensitive to regional production conditions rather than uniform. The author acknowledges limitations, noting that the Cobb–Douglas specification imposes constant elasticities and may not capture non-linear or dynamic relationships, and calls for future research using more flexible production functions. Yet even with those caveats, the analysis offers a rare long-term, comparative accounting of why India’s commercial farmers keep producing more while earning precariously, and where the next rupee of investment is most likely to pay off.

Subject of Research: Structural change in input use, cost instability, and farm profitability in Indian cotton and sugarcane cultivation from 1996–97 to 2021–22

Article Title: Structural change in input use instability and farm profitability in cotton and sugarcane in India

Article References: Mandal, A. (2026). Structural change in input use instability and farm profitability in cotton and sugarcane in India. Discover Agriculture, 4(1), Article 304. https://doi.org/10.1007/s44279-026-00747-5

Image Credits: AI Generated

DOI: 10.1007/s44279-026-00747-5

Keywords: cotton, sugarcane, India, cost of cultivation, farm profitability, input use, Cobb-Douglas production function, fixed-effects panel regression, Bt cotton, irrigation efficiency, agricultural economics, value of output

The genetic origin of PAU Bt 5 reflects a deliberate, multi-generation breeding strategy. The variety emerged through pedigree selection from the cross LH 2298 × PAU Bt 1, combining an elite adapted breeding line with an established Bt parent. Pedigree selection is one of the classical methods of plant breeding: after the initial hybridization, segregating generations are advanced and individual plants with superior combinations of traits are selected and selfed across successive seasons until genetic uniformity is achieved. Because the method retains the segregation products of a controlled cross, it allows breeders to shuffle the genomes of two parents and recover novel recombinant lines that outperform both. In the case of PAU Bt 5, that recombinant advantage translated into a statistically meaningful yield margin over its own Bt parent, PAU Bt 1, as well as over other commercial and local checks.

The evidence base for the release rests on the All India Coordinated Research Project on Cotton, the national testing network that evaluates candidate varieties across locations before they are recommended to farmers. Fifteen coordinated trials conducted between 2019 and 2022 across five locations in the North Zone formed the evaluation set. Across those environments, PAU Bt 5 recorded a mean seed cotton yield of 2,572 kilograms per hectare, a figure that represents the combined weight of harvested lint and seed picked from the fields. The variety outperformed PAU Bt 1 by 20.1 percent and PAU Bt 2 by 21.8 percent, while exceeding the check variety F 2228 by a marginal 0.25 percent and local checks by 8.18 percent. Consistent superiority across locations and seasons is a key criterion in varietal release because farmers need performance that is stable, not a one-season fluke.

Yield alone does not determine commercial success; the quality of the fibre and the efficiency of ginning are equally decisive for both farmers and the textile industry. In ginning trials, PAU Bt 5 produced a ginning outturn of 35.8 percent, meaning that roughly a third of the weight of seed cotton delivered to the gin emerges as saleable lint. Fibre analysis showed an upper half mean length of 26.2 millimetres, a micronaire value of 4.9 and a fibre strength of 26.4 grams per tex. Each of these parameters has a direct industrial interpretation. Upper half mean length measures the length of the longer half of the fibres and influences yarn evenness and spinning performance. Micronaire, a combined measure of fineness and maturity, sits within the range preferred by spinners when it falls between roughly 4.3 and 4.9, and PAU Bt 5 lies at the upper boundary of that range. Fibre strength in grams per tex indicates the force needed to break a bundle of fibres of unit linear density, and higher values allow finer, stronger yarns to be spun without breakages.

Disease resistance is the third pillar of the variety’s agronomic package, and it addresses some of the most persistent threats to cotton in northwestern India. PAU Bt 5 was classified as moderately resistant to cotton leaf curl disease, a viral condition transmitted by the whitefly that causes leaf deformation, stunting and yield losses across the region. More favourably, the variety showed resistance to fungal foliar leaf spot and to bacterial leaf blight, two foliar diseases that can compromise canopy health and photosynthetic capacity during the growing season. Resistance breeding matters because chemical control of these diseases is often imperfect and costly, and because farmers in the region already face heavy management burdens from insect pests. Embedding genetic resistance into an elite Bt variety reduces the need for protective sprays and provides a more durable, low-input form of protection.

The technical foundation of the variety lies in Bt technology itself, the insect-resistance system that has reshaped cotton production in India since its introduction. Bt cotton carries genes derived from the soil bacterium Bacillus thuringiensis, which encode proteins toxic to specific lepidopteran pests, notably the American bollworm complex that historically devastated Indian cotton crops. When susceptible larvae feed on any plant tissue, the ingested Bt proteins are activated in the alkaline midgut, binding to receptors and disrupting the gut epithelium, which halts feeding and kills the insect. For farmers, the practical consequence is a dramatic reduction in insecticide applications targeted at bollworms, lower production costs and reduced chemical exposure. Because PAU Bt 5 combines this insect protection with publicly bred genetic background, it offers farmers an alternative to proprietary hybrid Bt seed while remaining subject to the same resistance-management obligations that govern all Bt cotton cultivation.

The varietal context of the release also deserves attention. Unlike single-cross hybrids, which must be purchased fresh each season because their advantage collapses in the second generation, a pureline variety such as PAU Bt 5 breeds true, and its registration as germplasm secures its identity and availability for future breeding. The registration process formally documents the genetic stock in a national repository, making the material accessible to other breeders who may wish to use it as a parent in their own crossing programmes. In this sense the contribution of the Ludhiana team extends beyond the immediate commercial release: the variety becomes a building block for the wider improvement of American cotton, or Gossypium hirsutum, in South Asia. Public varieties also tend to keep seed costs down, an important consideration given the economic pressures on smallholder cotton farmers.

The regional focus of the release is equally deliberate. Punjab, Haryana and Rajasthan together constitute the North Zone of Indian cotton cultivation, an intensively irrigated system in which cotton is grown during the monsoon-assisted kharif season under assured water supply. Conditions in this zone differ sharply from the rainfed central and southern cotton regions, in terms of both soil type and the spectrum of pest and disease pressure. The whitefly-transmitted cotton leaf curl virus, for example, is a distinctly North Zone problem, which makes moderate resistance to that disease a regionally targeted trait rather than a generic one. The coordinated trial system ensures that varieties are tested under precisely these conditions before recommendation, and the 2019 to 2022 trial window captured meaningful environmental variation across the zone, lending robustness to the performance claims.

For the farming community, the sum of these attributes is a coherent value proposition. A mean seed cotton yield approaching 2.6 tonnes per hectare, double-digit percentage advantages over the two preceding Bt varieties from the same programme, ginning outturn and fibre traits that meet spinning-industry expectations, and layered resistance to three significant diseases together describe a variety engineered for dependability as much as for peak performance. The work was conducted under the All India Coordinated Research Project on Cotton and the State Research Scheme of Punjab Agricultural University, without any dedicated external grant, underscoring the role of sustained public investment in agricultural research. As insect resistance management, refuge planting and stewardship of Bt technology continue to evolve, varieties such as PAU Bt 5 demonstrate that conventional breeding excellence and transgenic protection can be integrated to deliver measurable gains, and that publicly developed germplasm remains a vital source of resilience for one of India’s most economically important crops.

Subject of Research: Development and evaluation of the high-yielding Bt cotton variety PAU Bt 5 for irrigated cultivation in North India

Article Title: American Cotton Bt Variety- PAU Bt 5 (PBH Bt 21)

Article References: Singh, P., Kumar, V., Grover, G., Rathore, P., Pathak, D., & Kumar, H. (2026). American Cotton Bt Variety- PAU Bt 5 (PBH Bt 21). Indian Journal of Genetics and Plant Breeding, 86(3), 385-386. https://doi.org/10.1007/s44489-026-00034-z

Image Credits: AI Generated

DOI: 10.1007/s44489-026-00034-z

Keywords: Bt cotton, Gossypium hirsutum, plant breeding, Punjab Agricultural University, cotton yield, fibre quality, disease resistance, cotton leaf curl disease, pedigree selection, AICRP Cotton, North India, varietal release

The technical logic of transgenesis is straightforward but powerful. Where a breeder seeking a target trait must find it within the primary gene pool of a crop, a transgenic approach can source the gene from any organism, including microbes, unrelated plants, or even the crop’s own genome rearranged in new ways. The major traits incorporated into commercial transgenic crops to date fall into four broad categories: herbicide tolerance, insect resistance, tolerance of abiotic stresses such as drought and salinity, and nutritional enhancement. Insect-resistant crops typically deploy genes derived from the soil bacterium Bacillus thuringiensis, whose crystalline toxin proteins, modified for enhanced expression in plant tissues, disrupt the gut of specific larval pests while leaving beneficial insects largely unharmed. Herbicide-tolerant crops carry enzymes insensitive to broad-spectrum herbicides such as glyphosate, allowing farmers to control weeds with simpler spray regimes. The review emphasizes that these are not exotic interventions but extensions of a long tradition of genetic exchange that plant breeders have practised for a century, from the transfer of leaf-rust resistance from Aegilops umbellulata into wheat in the 1950s to the wide hybridization programmes that underpin modern triticale.

The global adoption record is striking. Since the first commercial plantings in 1996, biotech crops have spread to tens of millions of hectares across more than two dozen countries, with soybean, maize, cotton and canola dominating the area. Meta-analyses of agronomic and economic outcomes, including the widely cited work of Klümper and Qaim, indicate that transgenic varieties have generally delivered reduced pesticide use, higher yields and improved farmer profits, with the largest gains accruing to smallholders in developing countries. Economic assessments covering 1996 to 2020 estimate cumulative farm income gains in the tens of billions of dollars and document reductions in pesticide spraying and associated carbon emissions. The review notes that these benefits have not been uniform, and that outcomes depend heavily on the trait, the crop, the pest complex and the stewardship practices that accompany deployment, but the overall pattern of evidence supports the view that the technology, when well managed, has been a net positive for productivity and environmental load.

India’s own experience with Bt cotton is the centerpiece of the domestic evidence base. Approved for cultivation in 2002, Bt cotton expressing the Cry1Ac toxin, and later stacked events, spread rapidly to cover more than ninety percent of the cotton area, transforming India from a cotton importer into one of the world’s largest producers and exporters. Yields rose, insecticide sprays against bollworms fell, and farm incomes improved in the early years of adoption. Yet the review is candid about the cautionary side of the story. Field-evolved resistance in the pink bollworm, Pectinophora gossypiella, was documented in central India within a decade of introduction, and widespread infestations on Bt cotton have since eroded some of the early gains. The authors point to inadequate compliance with refuge requirements, the planting of non-Bt cotton strips designed to slow the evolution of resistant pests, and the persistence of unapproved or diluted seed markets as contributing factors. The lesson, they argue, is not that the technology failed but that stewardship, seed quality control and resistance management are inseparable from any transgenic deployment.

Safety concerns have shadowed transgenic crops from the outset, and the review confronts them directly. Novel gene combinations have raised questions about potential risks to human and animal health, biodiversity and the environment, and these questions have fuelled some of the most contentious episodes in modern science communication. The authors revisit the Séralini affair, in which a 2012 rodent feeding study linking glyphosate-tolerant maize to tumours was widely criticized on statistical and design grounds, retracted, and later republished elsewhere, with regulatory agencies including the European Food Safety Authority concluding that it did not demonstrate harm. They also note the monarch butterfly controversy, in which laboratory findings of Bt pollen toxicity to larvae were subsequently weighed against field evidence and habitat loss as the dominant driver of population declines. More broadly, comprehensive reviews of livestock feeding studies have found no consistent adverse health effects from approved GM feed, and the National Academies of Sciences, Engineering and Medicine concluded in 2016 that genetically engineered crops are as safe as their conventional counterparts when properly regulated. The review stresses that every commercial transgenic crop undergoes rigorous evaluation for agronomic performance, food and feed safety, and compositional equivalence before release.

One of the more provocative threads in the review is the argument that transgenes are not inherently hazardous and that nature itself has been moving genes across species boundaries for millennia. The cultivated sweet potato, a staple food for millions, carries Agrobacterium T-DNA sequences with expressed genes in its genome, the result of ancient horizontal gene transfer, making it in a literal sense a naturally transgenic crop. Widespread horizontal gene transfer between plants and bacteria continues to be documented in modern genomes. The authors argue that increasing public awareness of such facts is critical for building societal confidence, because the perception of transgenesis as an alien and uniquely dangerous intervention rests on a misunderstanding of both the technology and natural biology. Transparent communication, they contend, must become a core component of any deployment strategy rather than an afterthought.

Gene flow and containment receive detailed technical treatment. Pollen-mediated transgene escape from cultivated fields to wild or weedy relatives has been demonstrated in crops such as rice, rapeseed and cotton, and the review surveys the strategies available for containment, including chloroplast transformation, male sterility systems, genetic use restriction technologies and spatial isolation. The risk profile, however, is highly crop-specific. A transgenic trait in a self-pollinating crop with no compatible wild relatives in the region of cultivation poses a very different ecological question than the same trait in an outcrossing species surrounded by interfertile wild populations. This crop-specific logic underpins the review’s central recommendation about where India should focus its transgenic efforts next.

Applying criteria that include the availability of target traits within the primary gene pool, consumption patterns, ecological risks and lessons from past experience, the authors identify transgrafted fruits, sugarcane, forage crops and maize as promising candidates for India. Transgrafting is technically elegant: a transgenic rootstock conferring disease resistance or other traits can be grafted with a non-transgenic scion, and in some systems mobile molecules such as transgene-derived small interfering RNAs travel from rootstock to scion, conferring virus resistance without genetically modifying the harvested fruit. Studies in grapevine, apple, sweet cherry, plum and blueberry have demonstrated the feasibility of the approach, and because the edible product may not carry the transgene, regulatory and consumer barriers could be lower. Sugarcane, propagated vegetatively and not grown from seed in the field, presents minimal gene-flow risk, while forage crops and maize offer clear targets in pest resistance and stress tolerance, with maize already the subject of global transgenic experience that India can draw upon directly.

The regulatory dimension is treated as decisive. India’s case-by-case framework, overseen by the Genetic Engineering Appraisal Committee, has approved only Bt cotton for commercial cultivation, and the long-pending case of genetically modified mustard illustrates how regulatory decisions can stall under public and political pressure. Meanwhile, the government has moved to clarify the status of genome-edited plants, issuing standard operating procedures for regulatory review of SDN-1 and SDN-2 categories of targeted mutagenesis, which do not introduce foreign DNA and are treated more leniently in many jurisdictions. The review argues that strengthening regulatory capacity, ensuring timely and science-based decisions, and addressing public concerns through transparent communication are essential for effective and socially acceptable deployment. It also points to the experience of Bangladesh, where Bt eggplant was commercialized for smallholders, as evidence that South Asian farming systems can benefit from well-managed transgenic introductions beyond cotton.

The overall message of the review is one of disciplined optimism. Transgenic technology is neither a panacea nor a menace; it is a tool whose value depends on choosing the right crops, the right traits and the right stewardship systems, and on building the regulatory and communicative infrastructure that allows evidence rather than fear to guide adoption. For India, with its mounting pressures of population, climate variability, shrinking arable land and degrading water resources, the authors argue that the strategic question is not whether to use transgenic innovation but where and how to deploy it first. Their answer, grounded in global evidence and Indian experience alike, points toward fruit crops protected through transgrafting, sugarcane, forages and maize as the sensible frontier, with Bt cotton’s mixed legacy serving as both inspiration and warning for the road ahead.

Subject of Research: Global transgenic crop innovations and their strategic application to Indian agriculture

Article Title: Advancing Indian Agriculture Through Global Transgenic Innovations

Article References: Dhillon, B., Singh, A., Sohu, V., & Rakshit, S. (2026). Advancing Indian Agriculture Through Global Transgenic Innovations. Indian Journal of Genetics and Plant Breeding, 86(3), 261-278. https://doi.org/10.1007/s44489-026-00030-3

Image Credits: AI Generated

DOI: 10.1007/s44489-026-00030-3

Keywords: transgenic crops, Bt cotton, India, transgrafting, gene flow, biosafety, herbicide tolerance, insect resistance, pink bollworm resistance, maize, sugarcane, genome editing