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Relation of Insects to the Initiation and Development of Boll Rot of Cotton1

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Abstract:

Of the insects causing direct injury to the cotton boll, boll weevils. Anthonot1lus grandis Boheman; bollworms. Heliothis zea (Boddie); and tarnished plant bugs. Lygus lineolaris (Palisot de Beauvois), initiated boll .rot infection. Initiation of boll infection by boll weevils ranged from 95 to 100%, by bollworms 55 to 80%, and by tarnished plant bugs 40 to 70%. Cotton bolls subjected to vinegar flies, DrosoPhila melanogaster Meigen, and cabbage looper moths, Trichoplusia ni (Hübner), developed nectary infections which in turn resulted in boll infection. Initiation of boll infection by vinegar flies ranged from 50 to 60%, and by cabbage looper moths 45 to 70%. Field- collected insects produced nearly as much infection as those held on the cultnres of Alternaria tenuis Auct. and Fusarium moniliforme Sheldon. No infection or rotting of the bolls was caused by either organism from contact inoculation.

Document Type: Research Article

Publication date: October 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.
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