How widespread is adoption of GMO crops?

       The adoption of genetically-modified ("GMO") crops in the US has grown dramatically since the mid-1990s, especially in soybeans and cotton. As of 2004, adoption of herbicide tolerant (HT) soybeans expanded to 85% of acres planted. HT cotton accounted for 60% of total acres and HT corn was adopted on only about 20% of acres planted. The second main type of GMO technology being adopted consists of insect-resistant crops containing a soil bacterium (Bt). Bt cotton reached 46% of acres cultivated in 2004, and Bt corn reached 32%. The principal advantage of HT and Bt technology is superior pest control: yields rise and chemical and other costs of insect and weed control are reduced.

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