Bollworm Damage and Yield of Cotton Infested at Different Time Periods1

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Abstract
By confining females and males of Heliothis zea (Boddie) to cotton in field screen cages for 2 nights, egg lay and subsequent larval populations were produced during five time periods from early squaring to late boll maturation. The results imply that colton can compensate for high levels of bollworm damage up to late July when grown under irrigated condition. Larval densities for the later periods of infestation were suppressed by high larval mortality, apparently predation induced, to a level that damage was very limited and the importance of such damage was not determined.