Crop yields from India’s first genetically modified crop may have been overemphasized, as modest rises in crop yields may come at the expense of sustainable farm management, says a new study by a Washington University in St. Louis anthropologist. [...] ”Conditions in the cotton fields change quickly. Populations of insects not affected by Bt have now begun to explode. We can’t forget that cotton farmers enthusiastically adopted pesticide sprays in the 1990s, only to watch them quickly lose their effectiveness.” Stone shows that the farmers’ real problem was never just with cotton pests.