A Preventive Boll Weevil Control Program Applied to a Ten-Square-Mile Area within an Untreated County1

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A preventive control program against the boll weevil, Anthonomus grandis Boheman, was applied to a 10- square-mile area within untreated Robeson County, North Carolina, in 1960. The treatment schedule consisted of 4 early-season insecticide applications beginning at the 8-leaf stage of cotton growth plus late-season applications beginning the last week of July and continuing to the end of squaring. Approximately 95% control of overwintered weevils was obtained with the early-season applications, resulting in approximately 88% control of P, boll weevils. When Po boll weevils emerged, control declined steadily to 16% as migrants entered the treated fields and depressed yields. The increase in boll weevils from the overwintered to the peak late season population was 21-fold in untreated fields and 856-fold in treated fields, indicating the magnitude of migration. Nevertheless. 6 insecticide applications increased the average yield of seed cotton 426 Ib/acre. More than I bale/acre was produced in 29% of the treated fields and in none of the untreated fields.

Document Type: Research Article

Publication date: February 1, 1968

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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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