Green Revolution & Its Legacy: Ecological Impacts - PDF

Summary

This document covers the ecological consequences of the Green Revolution. It likely discusses issues like loss of crop diversity, pesticide resistance, unsustainable soil and water use, and the impact of fossil fuels in agriculture, as well as solutions like integrated pest management and alternative farming methods.

Full Transcript

Crop fields, Arabian desert BIOB38: Plants and Society 1-2. Origin of agriculture 3-6. Plant domestication 7-10. Green Revolution & its legacy 11-14. Plants that feed the world 15-16. Plants that please the palate 17-18. Plants that heal the sick 19-20. Plants that hook the mind...

Crop fields, Arabian desert BIOB38: Plants and Society 1-2. Origin of agriculture 3-6. Plant domestication 7-10. Green Revolution & its legacy 11-14. Plants that feed the world 15-16. Plants that please the palate 17-18. Plants that heal the sick 19-20. Plants that hook the mind and body 21-22. Plants the world thirsts after 23-24. Plants of warmth and strength Green Revolution and its legacy 1. Introduction and historical overview 2. Means of increased food production 3. Distribution of food 4. Social negative effects of the GR 5. Ecological negative effects of the GR Green Revolution and its legacy 5. Ecological negative effects of the GR A. Loss of crop diversity B. Negative effects of pesticides C. Unsustainable soil use D. Unsustainable water use E. Unsustainable fossil fuel use Vandana Shiva Green Revolution and its legacy 5. Ecological negative effects of the GR A. Loss of crop diversity B. Negative effects of pesticides i. Reasons for pesticides ii. Reasons against pesticides iii. How to minimize pesticide use C. Unsustainable soil use D. Unsustainable water use E. Unsustainable fossil fuel use Pre-harvest losses (fungi, bacteria) Oerke. 2004. J. Agri. Sci. 144: 31-43 5B. Pesticide resistance: i. Reasons to use pesticides Weeds: the biggest driver of pre-harvest losses Plant-on-plant competition for resources 5B. Pesticide resistance: i. Reasons to use pesticides The case for pesticides Increased quantity & quality of food and ease of production 5B. Pesticide resistance: i. Reasons to use pesticides Pesticide use Applicaation of pesticide (mill. lbs) Agriculture: uses the largest proportion of globally applied Year pesticides 5B. Pesticide resistance: i. Reasons to use pesticides Different classes of pesticides US pesticide use, 1960-early 2000s Herbicides: largest fraction of pesticides Big issue: how to kill weeds but not crop plants? 5B. Pesticide resistance: i. Reasons to use pesticides Actual pre-harvest losses: decreased by pesticides Oerke. 2004. J. Agri. Sci. 144: 31-43 5B. Pesticide resistance: i. Reasons to use pesticides Pesticide use; by country, per unit land, per year 5B. Pesticide resistance: i. Reasons to use pesticides Green Revolution and its legacy 5. Ecological negative effects of the GR A. Loss of crop diversity B. Negative effects of pesticides i. Reasons for pesticides ii. Reasons against pesticides iii. How to minimize pesticide use C. Unsustainable soil use D. Unsustainable water use E. Unsustainable fossil fuel use Pesticides enter the human food chain Example India: various pesticides in cow milk in five cities Gill et al. 2020. Scientific Reports 10: 8054 5B. Pesticide resistance: ii. Reasons not to use pesticides Pesticides enter the ground water Example USA

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