Bt cotton yields come at hidden cost to farmers – study

SciDev.Net: Bt cotton has increased crop yields for small farmers in southern India, a study has confirmed. But the increase is less than claimed by some studies, is unlikely to be sustainable and has come at a substantial cost to the farmers. The cotton farmers at Warangal in Andhra Pradesh, India, are known for their widespread adoption of genetically modified cotton that produces an insecticide that kills bollworm, a common pest. Numerous studies say that planting Bt cotton increases the yield by up to......

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