A Comparison of Dimethoate Administered as an Injection and in Supplemental Feed for Control of Cattle Grubs1

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Hereford calves from Sweet Grass County, Montana were treated late in January with dimethoate for control of larvae of cattle grubs (Hypoderma spp.). The compound was administered either as a single injection at 10 mg./kg. or for 10 days in a supplemental feed at 2 mg./kg./day. Intramuscular injection resulted in 81% control and low-level feeding in 79% control of cattle grubs. Of calves receiving dimethoate in the feed or as an intramuscular injection, 80% and 84%, respectively, had fewer than six grubs; however, 56% and 20%, respectively, were completely free of grubs. Of 25 calves receiving dimethoate in the feed only three harbored 60%of the grubs. It would therefore appear that some calves failed to take the supplemental feed, but in those which did, control was good.

Document Type: Research Article

Publication date: April 1, 1961

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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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