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Age Distribution of Cotton Bolls and Damage from the Boll Weevil

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Releases simulating 1st and 2nd generation Anthonomus grandis (Boheman) were made on 2 cotton genotypes, and effects on fruiting, fruit damage, and yields were noted. First generation releases caused severe reductions. The release of twice as many weevils in the 2nd generation moderately reduced yields. First generation produced damage by way of square and boll attack; 2nd generation insects primarily were a threat to bolls. Bolls 12 days old or older at the time of the beginning infestation of 2nd generation weevils of the short season genotype DSR 1 × 6- 56 were relatively safe from weevil injury. Subplots of this cotton averaged 300–500 lb acre in bolls that were 13 days or older on the 2nd day of the 2nd generation period.

Document Type: Research Article

Publication date: February 1, 1977

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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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