Adoption of genetically engineered crops grows steadily in the U.S. -Ht Soybeans -Ht Cotton -Bt Cotton -Bt Corn -Ht Corn Percent of acres 100 90 60 000 199619971998199920002001200220032004200520062007 1.Data for each crop category include varieties with both HT and Bt(stacked)traits. 2.Bt to control corn rootworm introduced commercially in 2003 ●● Source:USDA/NASS data ●●● ●●●0 10 20 30 40 50 60 70 80 90 100 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 Ht Soybeans Ht Cotton Bt Cotton Bt Corn Ht Corn Percent of acres 1. Data for each crop category include varieties with both HT and Bt (stacked) traits. 2. Bt to control corn rootworm introduced commercially in 2003. Source: USDA/NASS data Adoption of genetically engineered crops grows steadily in the U.S