Bollworm (Helicoverpa zea) Damage and Behavior in Bt Cotton

Use of Bt cotton varieties for control of bollworm, Helicoverpa zea,  populations has become an important topic in agriculture. Previous studies have shown that larvae have been known to detect and avoid high expressing regions of the plant. Experiments were conducted to evaluate the current effects of two-gene and three-gene cotton varieties on larval recovery and behavior in comparison to non-Bt cotton. Results will be discussed.