The Green Revolution refers to a period of significant advancements in agricultural practices and technologies that occurred from the 1940s to the late 1960s. It was a global initiative aimed at increasing agricultural productivity, particularly in developing countries.
During this period, the introduction of high-yielding crop varieties, along with the use of fertilizers, pesticides, and irrigation techniques, led to a substantial increase in crop yields. These advancements helped to address food scarcity and alleviate hunger in many parts of the world.
The Green Revolution had a profound impact on agricultural practices, transforming traditional farming methods and significantly increasing food production. However, it also had its challenges and drawbacks. Critics argue that the intensive use of synthetic inputs and monoculture practices led to environmental degradation, loss of biodiversity, and increased dependence on external inputs.
Despite the controversies, the Green Revolution played a crucial role in shaping modern agriculture and continues to influence agricultural practices today. It remains a topic of debate as efforts are made to develop more sustainable and environmentally friendly approaches to food production.
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Owing to new cultivation techniques and input-heavy systems of agricultural production, the so-called Green Revolution, food production has boomed worldwide. Wheat production in India tripled between 1965 and 1980, for example, far outpacing the rate of population growth. In Indonesia during the 1970s, rice production increased by 37%. In the Philippines it increased by more than 40%. The period from the middle 1960s to the present in fact has been a period in which more food has been produced than consumed, and in which more people have been moved above the level of starvation than in the century prior.
Nevertheless, a number of other environmental problems came with the Green Revolution and the expansion of food production, including the loss of unbroken soils across the prairies and rainforests of the Earth, and a concomitant loss in biodiversity. Where new land is not used to increase food supplies, increased intensity of production has also meant a massive input of fertilizers and pesticides. These chemicals take a toll on the land and are themselves made from petrochemicals, meaning that they depend upon petroleum extraction and manufacturing, with all of the environmental implications of that system. Energy is necessary, moreover, to produce farm equipment (like tractors, and harvesters), and to power that equipment. All of this energy comes from the ongoing exploitation of increasingly scarce petroleum resources, the production of which is costly and environmentally devastating. Each calorie of food in the years following the Green Revolution has become far more ecologically expensive. There appears to be no such thing as a free lunch.
These outcomes also raise questions about the problem of scale in assessing the impact of population. Agriculture might expand dramatically in a densely populated part of Brazil, for example, to produce soybeans for both consumption and industrial applications, with serious implications for the forest these crops replace. The "population" that drives this demand, however, lives thousands of miles away in Europe and the United States, and thrives in a high-impact lifestyle under conditions of low population density and growth. The circulation of agricultural products makes assessing the impact of local, regional, and global populations extremely difficult.
Robbins, P, Hintz, JG, & Moore, SA, 2022, Environment and Society: A Critical Introduction, 3rd Ed., Wiley Blackwell, Oxford. pp. 23,24