Crops developed through biotechnology methods continue to be planted on more acres and continue to deliver more tangible impacts in the United States.  In 2002, the National Center for Food and Agricultural Policy assembled a comprehensive report, 'Plant Biotechnology: Current and Potential Impact for Improving Pest Management in U.S. Agriculture.'  The study documented higher yields, higher farm incomes, and reduced pesticide use due to extensiveadoption of biotechnology-derived crops in 2001.  The updated study found that the positive impacts continued to increase as 26 million more acres were planted to more varieties of biotechnology-derived crops in 2003.Similar to 2001, American growers planted six biotechnology-derived crops in 2003 ? canola, corn, cotton, papaya, soybean, and squash. With the introduction of three new traits for corn and cotton in 2003, the number of biotechnology-derived varieties increased to 11, compared with eight in 2001.  They included virus-resistant papaya and squash; herbicide-tolerant canola, corn, cotton, and soybean; and insect-resistant corn (three applications) and cotton (two applications).