Bollworm,Heliothis zea(Boddie), and tobacco budworm,H. virescens(F.), infestations were allowed to build up throughout the 1979 growing season in a 0.81-ha cotton field. The following spring, strips of the field were disked, subsoiled and bedded, or left undisturbed. Measured portions of row in each treatment were then covered with screen covers and observed five times a week for emergence of overwintered moths. An estimated 7,760, 1,746, and 3,007 moths per ha emerged from the undisturbed, double disked, and subsoiled and bedded plots, respectively.