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Hibernation of Pectinophora Gossypiella in Texas

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The results of three years studies on the hibernation of the pink bollworm are presented. It was found that in the cotton field the greatest number of the over-wintering stages were in bolls on the stalks, although a considerable number were in shed forms or cocoons in trash on the surface of the ground. A comparatively small percentage were in the soil. Averages for three years show that the final survival in bolls buried 4 inches but not irrigated was greater than in bolls on the surface of the soil when not irrigated, though this ratio was reversed in sandy-loam soil or when bolls were buried in the month of March. An irrigation of surface bolls increased the survival. March burial of 4 inches produced greater mortality than December burial at the same depth, without irrigation in either case. Immediate irrigation of bolls buried 4 inches caused much greater mortality under certain conditions than occurred in bolls buried the same depth but not irrigated, but three-year averages under such irrigation in all soil types studied and for all months show very little difference. Delaying irrigation three months after burial greatly increased survival over that in bolls buried 4 inches but not irrigated or in bolls buried 4 inches and irrigated at once. The survival in bolls in sandy loam was much lower than in bolls in silty-clay soil.

Document Type: Research Article

Publication date: December 1, 1931

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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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