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Further Tests with Power Dusting to Control the Sheep Ked

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Power dusting of shorn sheep in spring with 2% diazinon, 1.5% dieldrin, or 1% ronnel completely eliminated infestations of the sheep ked, Melopliagus ovinus (L.). Though 0.5% coumaphos, 2% dioxathion, and 4% malathion reduced ked numbers 87% or better, they did not eradicate infestations. A 4% carbaryl dust reduced keds by only 60%. Sheep ked infestations were more difficult to eradicate in fall by power dusting. Of the insecticides tested, diazinon was the only one to eradicate infestations of keds consistently at this time of year. Concentrations of 3%, 4%, and 5% were equally effective. A 2% concentration fell short of complete control but did reduce numbers 98%.

Document Type: Research Article

Publication date: February 1, 1965

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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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