Yield Changes since GE Crops Introduced No change in yields of herbicide-tolerant corn and soybeans No change in yields of herbicide-tolerant corn and soybeans Insect-resistant Bt corn yields up 3-4% Insect-resistant Bt corn yields up 3-4% Non-GE plant breeding and farming methods have increased yields of major grain crops from 13-25% Non-GE plant breeding and farming methods have increased yields of major grain crops from 13-25%
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