Green Revolution

The Green Revolution is a term referring to the surge in agricultural production that began in the 1960s, particularly in developing countries, leading to rapid increases in wheat and rice yields. This process is based on the adoption of a technology package comprising high-yielding seed varieties, fertilizers, controlled irrigation, and other chemical inputs. These new varieties do not produce significantly higher yields than traditional ones without fertilizer or controlled irrigation, but when the package is fully implemented, they yield substantially more per hectare. It is known that success depends technically on the complete application of this package, as the absence of any single component prevents the expected yield increases.

^{Farmers Examining High-Yielding Wheat Before Research Facilities (Generated by Artificial Intelligence)}

Historical Development and Institutional Origins

The emergence of the Green Revolution is linked to the widespread problem of hunger and malnutrition in the 1960s, when food production in countries of the Global South failed to keep pace with population growth.

The technological roots of the Green Revolution lie in Western breeding techniques. The search for disease-resistant and high-yielding seeds was a focus of research in Western countries during the 19th century. A variety regarded as the "father" of the Green Revolution wheat was developed in Japan in the 19th century.^【1】 American agricultural engineer Norman Borlaug, while conducting research in northern Mexico under a Rockefeller fellowship, combined the Japanese "Norin 10" with Mexico's traditional "Sonora" wheat to develop the high-yielding "Sonora 63". This work earned Borlaug the Nobel Peace Prize in 1970.^【2】

^{Borlaug Examining High-Yielding Wheat Seeds in the Field (Generated by Artificial Intelligence)}

The institutional infrastructure of the Green Revolution was largely financed and directed by American foundations.

• CIMMYT (International Maize and Wheat Improvement Center): Established in Mexico in 1963 as an expansion of a research program initiated in 1943 by the Rockefeller and Ford Foundations. It focused on maize and wheat seed development.^【3】

• IRRI (International Rice Research Institute): Established in the Philippines in 1962 with funding from the Rockefeller and Ford Foundations and USAID (United States Agency for International Development). It developed high-yielding rice varieties.^【4】

• ADC (Agricultural Development Council): Founded in 1953 by J. D. Rockefeller III. This institution aimed to train a local elite of agricultural economists and administrators capable of shaping agricultural policies in developing countries.^【5】

Management of these centers was later transferred to CGIAR (Consultative Group on International Agricultural Research). Their funding comes from international organizations such as the World Bank as well as bilateral aid programs from countries such as the United States, Canada, and Japan.

Some analyses interpret the development of the Green Revolution as part of U.S. foreign policy strategy aimed at directing social and economic development in the Third World, creating new markets for investment and sales, and preventing rural and urban unrest caused by rising hunger and poverty. According to this view, the U.S. modification of its P.L. 480 (food aid) program in 1965, tying aid to conditions of agricultural development, population control, and opening markets for U.S. investors, steered countries such as India to accept Green Revolution technologies and associated foreign capital during the 1965–66 famine.

Green Revolution technologies were first widely implemented in Pakistan and India.

• India: A grain importer at the beginning of the 1960s, the country doubled its production within a few years and became self-sufficient by the 1970s. Wheat production in the state of Punjab increased eightfold over twenty years. The area devoted to high-yielding seed varieties nationwide rose from 15.4 million hectares in 1970–71 to 52.5 million hectares in 1983–84. This figure corresponds to approximately 90 percent of India's irrigated agricultural land.^【6】

• Mexico: Thanks to new wheat and maize varieties, agricultural production increased at an average annual rate of 9 percent between 1960 and 1965. Mexico achieved self-sufficiency in wheat by the early 1960s.^【7】

• Other Countries: Pakistan began in 1966–67 with 50 tons of seed and imported 42,000 tons of high-yielding seed the following year. Rice production in the Philippines and Indonesia increased by more than 3 percent annually between 1961 and 1980. The technology was also applied in Brazil, Iran, Algeria, and to a limited extent in Türkiye.^【8】

By the 1980s, it was estimated that one-third to half of the rice-growing areas in the developing world were planted with high-yielding varieties. In eleven Asian countries, this proportion ranged from 9 percent (Thailand) to 78 percent (Philippines). Annual production increases in Latin America were estimated at approximately 2.5 million tons. In the 1982/83 period, the area under modern wheat varieties was estimated at 35 million hectares. These technologies were later extended to other food crops such as maize, sorghum, cassava, and beans.^【9】

The success of the Green Revolution depended on the presence of specific preconditions. For instance, the widespread adoption in India’s Punjab state was based on extensive irrigation systems built during the British colony period and on farmers’ financial capacity and market-oriented traditions. Similarly, Mexico’s success was linked to state-supported irrigation channels developed on large, modern farms.

Reasons for the technology’s failure to spread universally include dependence on industrial inputs such as chemical fertilizers and pesticides, difficulties in expanding irrigated land, foreign exchange shortages needed to import inputs, and the inability to implement land reforms. For example, in Mexico, the annual agricultural production growth rate of 9 percent between 1960 and 1965 fell to 1 percent during 1975–80.

India was able to sustain implementation due to intensive state financial and technical support. The state supported large irrigation investments as well as small-scale irrigation projects through bank credit; the area under irrigation rose from 30 million hectares before 1970 to 60 million hectares by the mid-1980s. Additionally, emphasis was placed on domestic production of fertilizers and pesticides, and support prices were applied to encourage farmers to adopt modern inputs.^【10】

Poor African countries largely remained outside this application. Between 1960 and 1980, agricultural production growth in Africa did not exceed 2 percent, while it surpassed 3 percent in East Asia and Latin America.^【11】 Reasons include the incompatibility of developed high-yielding wheat and rice varieties with tropical climates, the failure to develop similar varieties for staple crops such as tubers and millet, agricultural policies that failed to incentivize production (e.g., state-set low prices), and inadequate marketing infrastructure.

The outcomes of the Green Revolution varied depending on the interaction between the technology and the institutional and political context in which it was applied. Some argue that the technology itself is not responsible for negative developments caused by inappropriate institutions and policies.

The technology was designed to maximize yields on the most productive, irrigated lands, contributing to increased regional disparities:

• Mexico: New varieties were concentrated in irrigated northwestern regions, while the rest of the country, where most of the population lived, was almost unaffected.

• India: Northern states such as Punjab, with concentrated irrigation infrastructure, benefited significantly.

• Pakistan: The technology succeeded in irrigated West Pakistan but achieved almost no success in rain-fed East Pakistan (later Bangladesh). This disparity is known to have deepened economic differences between the two regions and contributed to regional tensions.

The differential impact of the Green Revolution on various socioeconomic classes has been a central focus of analysis.

Initial studies concluded that large farmers primarily benefited from the technology, increasing income and wealth inequality and worsening rural poverty. According to A. Sen’s observations in India, those who benefited were large landowners with access to suitable irrigated land, financial resources to purchase modern inputs, and technical knowledge.

Subsequent studies argued that these early findings were flawed, asserting that the fact that early adopters were large farmers did not mean small farmers rejected the technology. Instead, small farmers rapidly adopted it as uncertainty decreased. Later evidence showed that high-yielding varieties were widely adopted regardless of farm size or land tenure, and in some cases, net returns per hectare tended to be higher on small farms. According to this view, the decisive factor is not farm size but access to optimal production conditions such as irrigation. In India, the number of beneficiary farmers increased from 106,000 in 1980 to 5 million by 1984 due to state efforts to expand the program.^【12】

Other studies noted that while adoption rates of new seeds were similar, wealthier farmers used more of the package’s complementary inputs (fertilizer, pesticides), creating significant income inequality. In Punjab, India, high profits led to land price increases of up to 500 percent, prompting landowners to acquire more land and convert tenants into wage laborers to reduce costs.^【13】

Green Revolution technology increased labor demand in some cases by boosting productivity and enabling multiple cropping per year. However, rising profits and state subsidies encouraged farmers to invest in mechanical equipment such as tractors, harvesters, and threshers. The net effect of this mechanization has generally been labor substitution (labor-saving). For example, in South Asia, tractors were found to replace labor without significantly increasing productivity or planting density. This has offset employment gains from the seed-fertilizer package, increased rural unemployment, accelerated migration to cities, and expanded urban slum populations.

The production increases driven by technological change benefited consumers by keeping food prices lower than they otherwise would have been. Low-income consumers, who spend a larger share of their income on staple foods, gained relatively higher real income from these price reductions.

Additionally, indirect (multiplier) effects of agricultural growth have been identified. In India, a 1 percent increase in agricultural output was found to stimulate a 0.5 percent increase in industrial production and a 0.7 percent increase in national income. This effect stemmed largely from increased household consumption spending, which created employment in rural non-agricultural sectors (transport, services, etc.) and contributed to the incomes of landless laborers and small farmers.

The Green Revolution created large markets for multinational corporations producing seeds, fertilizers, pesticides, and farm equipment. Companies such as ESSO, Ciba, and Mitsubishi, originating in the United States, Japan, or Western Europe, became active promoters of the technology and established monopolistic markets for the production and distribution of modern inputs. Lester Brown cited ESSO’s program in the Philippines, which established 400 trading centers not only for fertilizers but also for seeds, pesticides, and equipment. However, it has been reported that these profit opportunities were not as large as anticipated; for instance, ESSO later sold its Philippine network due to low profits.^【14】

The Green Revolution increased average food production but also increased variability around national production trends. This led to more unstable prices. The primary cause of this increased fluctuation is not individual farm yield variation (less than 10 percent) but the increased tendency for yields across different states or regions to move together (higher covariances). This is believed to result from the genetic similarity of widely planted new varieties. The 1970 outbreak of Helminthosporium maydis (Southern Corn Leaf Blight) in the United States and the 1971 rice virus disease in the Philippines are cited as examples of this genetic uniformity risk. Additionally, irregular supply of inputs such as electricity for fertilizer or irrigation pumps has intensified this effect by causing simultaneous yield declines over large areas.

Early studies on the Green Revolution largely ignored the role of women. Yet women play a key role in providing the additional labor required by technological change. It has been noted that poor rural women already have highly time-constrained schedules and that labor-saving technologies targeting traditional women’s tasks (e.g., hand weeding), such as chemical herbicides, may negatively affect their employment. Furthermore, many small farms are managed by women, and shifts in control over household income (e.g., from women-controlled subsistence production to men-controlled cash crops) have implications for household welfare and nutrition.

The Green Revolution has had both positive and negative environmental effects.

^{Cracked Soil and Fish Killed by Pesticide Pollution (Generated by Artificial Intelligence)}

High-yielding technology enabled greater production on existing farmland, reducing pressure to expand agriculture into marginal lands, forests, and pastures, thereby helping to limit land degradation and deforestation.

• Soil and Water: Intensive irrigation required by high-yielding varieties has increased soil salinity in regions such as Pakistan and India, rendering land unusable. Heavy use of inorganic fertilizers has caused eutrophication of rivers and lakes through surface runoff.

• Pesticides: Intensive pesticide use was required for new varieties. The broad-spectrum (non-specific) nature and insufficient testing of these chemicals have led to outcomes such as poisoning of fish ponds in the complex ecosystems of tropical regions.

• Genetic Diversity: The rapid spread of a small number of high-yielding varieties has created overly simplified ecosystems and reduced genetic diversity at the farm level. This has made it necessary to preserve genetic material elsewhere, such as in gene banks.