Bollworm Damage and Yield of Cotton Infested at Different Time Periods

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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.

Document Type: Research Article

Publication date: June 1, 1982

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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