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Effects of Timing and Method of Application on Efficiency of Co-Ral Sprays for Cattle Grub Control1

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When cattle were sprayed with 0.5% Co-Ral® (O-(3-chloro-4- Methylull1belliferonc) O, O-dicthyl phosphorothioate) at monthly intervals from May through September, there was no relationship between control and time of treatment. In other experiments with grown animals control ranged from 87.5% for gallon of 0.4% to 90% for 1 gallon of 0.5%, applied at a pressure of 300 pounds per square inch, but control obtained by treating calves lightly (approximately 1 quart) was only 31%. In further tests with 0.5% no differences were noted between 1/ 2 to 1 1/2 gallons appeared at 250 pounds and 1 gallon at 250 or 500 pounds per square inch. Except for the calves, cattle in all tests were in Summer coat and appeared to be wet to the skin by the minimum volume and pressure.

Document Type: Research Article

Publication date: October 1, 1960

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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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