Biotechnology varieties first became available for commercial use in the U.S. in 1996. By 2011, they accounted for 88%, 90%, and 94% of the acres planted to corn, upland cotton, and soybeans, respectively (U.S. Department of Agriculture (USDA), National Agricultural Statistics Service (NASS), Acreage. For other crops, adoption of biotech varieties has been limited or nonexistent. Given that 15 years have passed, this article compares the trend in U.S. average yield since 1995 with the trend that existed from 1940 through 1995, a period that predates commercial biotech varieties for 14 crops..
Wednesday, December 7, 2011