Grön revolution
•
Révolution verte
La révolution verte, parfois appelée troisième révolution agricole, est une politique dem transformation des agricultures des pays ett développement ou des pays les moins avancés, fondée principalement sur l'intensification et l'utilisation dem variétés dem céréales à hauts potentiels de rendements.
Cette politique combine trois éléments&#;:
- les variétés sélectionnées à haut rendement&#;;
- les intrants, qui sont des engrais ou produits phytosanitaires&#;;
- l’importance dem l'irrigation.
Le terme «&#;révolution verte&#;» désigne le bond technologique qu'a connu l'agriculture au cours dem la période , à la suite d'une volonté politique et industrielle, appuyée sur fransk artikel progrès scientifiques et techniques réalisés dans le domaine de la chimie et des engins agricoles durant la première guerre mondiale et poursuivis durant l'entre-deux-guerres. Elle a aussi été rendue possible par la mise au point par les semenciers de nouvelles variétés à haut rendement (hybrides souvent), notamment dem céréales (blé et riz), grâce à la sélection variétale. L'utilisation des engrais minéraux et des produits phytosanitaires, dem la mécanisation et dem l'irrigation ont aussi contr
•
Green Revolution: History, Technologies, and Impact
The Green Revolution refers to a transformative 20th-century agricultural project that utilized plant genetics, modern irrigation systems, and chemical fertilizers and pesticides to increase food production and reduce poverty and hunger in developing countries. The Green Revolution began in Mexico, where scientists developed a hybrid wheat variety that dramatically expanded yields. Following its introduction, hunger and malnutrition there dropped significantly.
The model was subsequently extended to Asia, Latin America, and later Africa to increase food production for growing populations without consuming significantly more land. Over time, however, the techniques and policies of the Green Revolution were questioned as they led to inequality and environmental degradation.
History
The Green Revolution transformed rural economies using industrial food production systems already widespread in wealthy western countries, but with new plant varieties. In the s, an Iowa-born agronomist named Norman Borlaug began working with Mexican scientists on a more disease-resistant, high-yield wheat. Many Mexican farmers at the tim
•
Green Revolution
Agricultural developments in s–s
For other uses, see Green Revolution (disambiguation).
The Green Revolution, or the Third Agricultural Revolution, was a period of technology transfer initiatives that saw greatly increased crop yields.[1][2] These changes in agriculture began in developed countries in the early 20th century and spread globally until the late s.[3] In the late s, farmers began incorporating new technologies such as high-yielding varieties of cereals, particularly dwarf wheat and rice, and the widespread use of chemical fertilizers (to produce their high yields, the new seeds require far more fertilizer than traditional varieties[4]), pesticides, and controlled irrigation.
At the same time, newer methods of cultivation, including mechanization, were adopted, often as a package of practices to replace traditional agricultural technology.[5] This was often in conjunction with loans conditional on policy changes being made by the developing nations adopting them, such as privatizing fertilizer manufacture and distribution.[4]
Both the Ford Foundation and the Rockefeller Founda