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Fruiting and yield characteristics of semideterminate Coker 100 W and nondeterminate Deltapine 1.5 cotton were compared under conditions of (I) heavy boll weevil, Anthonomus grandis Boheman, infestation and (2) virtually no infestation. Varietal differences in the trends in fruiting and yield were similar in the presence and absence of weevils. Under each condition, Deltapine 1.5 produced a significantly lower yield than Coker 100 W. The decreased yields of Deltapine 15 were due to greater square and boll abscission and the production of smaller bolls, rather than to greater susceptibility of this variety to weevils. Deltapine 15 fruited as early as Coker 100 w, and its nondeterminate growth was not expressed. Hence, the boll weevil did not limit the productivity of Deltapine 15 any more than it limited the productivity of Coker 100 W.
Document Type: Research Article
Publication date: February 1, 1968
More about this publication?
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.