PERFORMANCE OF BOLLGARD II IN ARKANSAS IN 2003

摘要

ESEARCH PROBLEM- Bollgard' II was compared to Bollgard~R and conventional (i.e., non-,Bt) cotton in order to observe effectiveness against the Heliothine complex and various lepidopterous pests. In the trial, Bollgard II and Bollgard performed marginally better when compared to conventional cotton with respect to square, bloom, and boll damage. Bollgard II performed significantly better than Bollgard and conventional cotton with respect to soybean looper defoliation. Bollgard and Bollgard II significantly out-yielded conventional cotton. Further evaluations of Bollgard II will be necessary to determine feasibility for Arkansas cotton production.