In the first two decades after independence, India could not reliably feed itself. Repeated droughts, a fast-growing population, and agriculture still organized much as it had been for generations left the country's first elected governments dependent on foreign food aid, most of it wheat shipped from the United States under the PL-480 programme; officials and commentators of the era openly described India as living a "ship-to-mouth" existence, with grain reserves so thin that a delayed cargo could threaten shortages in Indian cities. Two consecutive years of severe drought, in 1965-66 and 1966-67, pushed the crisis to its worst point (NCERT, India: People and Economy, ch. 3[1]) and turned the search for a faster way to raise domestic grain output into an urgent matter of national policy rather than long-term research.
Borlaug's seeds and Swaminathan's trials
The breakthrough India adopted had already been proven elsewhere. Working in Mexico from the 1940s, the American agronomist Norman Borlaug had bred semi-dwarf wheat varieties that, unlike traditional tall wheat, could take up much larger doses of fertilizer without collapsing under their own weight, producing far higher yields per acre when grown with adequate water and nutrients (NCERT, India: People and Economy, ch. 3[1]). M. S. Swaminathan, a geneticist at the Indian Agricultural Research Institute in New Delhi (Encyclopaedia Britannica, "M. S. Swaminathan"[3]) whom the Bengal famine of 1943 had turned, as a student, toward agricultural science and who made food security his life's work, invited Borlaug to India in 1963 and helped organize multi-location trials of the Mexican varieties under Indian growing conditions. The results were strong enough that in 1966 the Indian government, under agriculture minister C. Subramaniam, approved the import of some 18,000 tonnes of Mexican wheat seed to be sown at scale, at the time the largest seed import of its kind anywhere.
A concentrated transformation
The new seeds performed best where farmers could guarantee irrigation and afford the fertilizer they needed, and those conditions existed most reliably in Punjab, Haryana, and western Uttar Pradesh, which is where the new agriculture took hold fastest and most completely (NCERT, India: People and Economy, ch. 3[1]). Working with scientists at Punjab Agricultural University, agronomists such as Dilbagh Singh Athwal helped adapt and popularize wheat varieties like Kalyan Sona for local conditions, and Punjab in particular was transformed within a few growing seasons from an ordinary farming region into the country's grain-surplus heartland. The national numbers moved quickly: wheat production rose from roughly 12 million tonnes in 1965 to about 20 million tonnes by 1970, and total foodgrain output climbed from about 72 million tonnes in 1965-66 to more than 108 million tonnes by 1970-71 (Agricultural Statistics at a Glance 2023, Tables 2.3(a) and 2.5(a)[4]), with rice yields improving further over the following decade through varieties developed at the International Rice Research Institute and adapted for Indian conditions. By the mid-1970s, India had built up enough of a buffer to end its dependence on imported food grain. An American aid official, William Gaud, had already coined the term "Green Revolution" for the change in 1968.
The Green Revolution's costs: groundwater, soil, and regional inequality
Few dispute that the Green Revolution turned a food-aid-dependent country into one that fed itself. What agricultural economists and historians continue to debate is how to weigh that achievement against its longer-term costs. Because the new varieties succeeded mainly where irrigation was already reliable, the gains concentrated heavily in Punjab, Haryana, and a handful of other regions, while large parts of eastern and central India, where farming still depended on rainfall, saw far less benefit, and that regional gap in agricultural income has never fully closed (NCERT, India: People and Economy, ch. 3[1]). The intensive irrigation, and the wheat-rice cropping cycle it made possible, drew down groundwater in Punjab and Haryana faster than it could be replenished (Encyclopaedia Britannica, "Green Revolution"[2]), and decades of heavy fertilizer and pesticide use degraded soil quality and, by some accounts, local water supplies in the most intensively farmed districts. Rising costs for seed, fertilizer, and irrigation also pushed many smaller farmers into debt even as national output climbed. The Green Revolution still ended famine-level food insecurity in India within about a decade. Historians increasingly describe it as a trade-off, though, and the regions that adopted it first are still paying for it in soil and water.
