Semidwarf Cottons and Bollworm Attack

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Investigations of Heliothis zea (Boddie) attack on cottons differing in growth and fruiting characteristics were conducted in Texas in 1971–72. Numbers of fruits damaged on the indeterminate variety 'Deltapine 16,' were similar to that recorded on experimental semidwarf determinate strains. Bollworms, as they fed, moved much less on the diminutive cottons in comparison to Deltapine 16. Thresh-hold studies showed that 9000 worms/acre for 3 infestation periods reduced yields 134–144 lb lint/acre. However, the 3 infestation subplots still produced ca. 1000 lb lint/acre. Delayed maturity as a result of the released infestations was recorded in the Deltapine 16 subplots; maturity was unaffected in the experimental semidwarf strain.

Document Type: Research Article

Publication date: December 1, 1974

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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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