Direct and Residual Kill of the Boll Weevil with ULV Sprays of Azinphosmethyl

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Tests in field plots showed that size of spray droplets, dose, and volume of ULV azinphosmethyl applied per acre were all highly significant in determining mortality of Anthonomus grandis Boheman when exposed to the residues. As volume applied per acre was increased, kill decreased. Kill by direct impingement of the droplets was less than 32%. The overall ratio between kill by residue and by direct impingement was over 4.0. With spray droplets in the size range of 100–200 m, kill by direct impingement is less important than kill by residue.

Document Type: Research Article

Publication date: June 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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