1 / 17

Green Revolution

Green Revolution. 3 rd Agricultural Revolution 20 th Century. Norman Bourlag : Father of Green Revolution. Beginning. There are varying dates of the actually beginning of the revolution, but many estimate it around WWII (1940s)

jaron
Télécharger la présentation

Green Revolution

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. GreenRevolution 3rd AgriculturalRevolution 20th Century

  2. Norman Bourlag: Father of Green Revolution

  3. Beginning • There are varying dates of the actually beginning of the revolution, but many estimate it around WWII (1940s) • Norman Borlaug was in Mexico in 1943 trying to help produce more in the rural areas. • Norman was granted funding by the Rockefeller Foundation to help spread the technology to developing nations • First called Green Revolution in 1968

  4. Punjab region in India

  5. Success Story • In the early 1960s, Norman was invited to India • The Punjab region of India was to be the test site for the new technology • IR8-a semi-dwarf rice produced more grains when grown with certain fertilizers and irrigation • Known as “miracle rice” • From 1960s-1990s yields have tripled, also prices have dropped from $550 per ton to $200 per ton • India now one of world’s most successful rice producers and a major exporter

  6. Africa: Slow Progress even with science

  7. Failed attempts • Africa has had several attempts using the HYV or High-Yield Varieties, but none have been a success • Reasons: corruption, lack of infrastructure, lack of water and irrigation, lack of skilled farmers • NERICA-New Rice for Africa, could double yields but no real success story yet

  8. Miracle Rice or IR8

  9. Cross Breeding Plants: Selective Breeding: Genetic Engineering

  10. Technologies • Pesticides, Irrigation Projects, synthetic nitrogen • Cross breeding corn, wheat, rice to create HYV • Molecular genetics have changed shape and size to support the different grains

  11. India Production since 1965: Wheat

  12. Production • Doubled in developing nations from 1961-1985 • This can ease foreign aid to developing nations • 25% increase in caloric intake in developing nations

  13. Negatives • Farms now more addicted to petroleum • Monocultures developed • Ecological demands-pesticides, soil, water • Diet change, lack of flavor • Single farmer vs. Commercial/Agribusiness • What affects will be felt worldwide in agricultural areas when petroleum runs out?

  14. India 2000 drought

  15. Water Usage • Water usage has increased worldwide since Green Revolution • Extreme water intensive plants using high tech fertilizers causing drain on tributaries and major water sources • Example: SW USA uses 36% of our water but only receives 6% rainfall • Also water quality decreasing-salinization, oxygen depletion due to algae growth

  16. Project Water Shortages

  17. Scenario Pick one side and write on it • Defend your position: (Pro or Con-You Pick) The 3rd Agricultural Revolution was a necessary and successful event for humans. Possible video to stimulate discussion http://www.metacafe.com/watch/1708683/richard_manning_on_the_green_revolution/

More Related