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Horn Fly Control Studies in Mississippi, 1961

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Five different studies on the application of insecticides to cattle for horn fly (Haematobia irritans (L.)) control were conducted in Mississippi during 1961. Residual pen sprays of 0.25% SevinĀ®(l-naphthyl N-methylcarbamate) wettable powder remained effective longer than the sprayable formulation, but even the wettable powder controlled flies for only 10 to 12 days. Bayer 29493 (O,O-dimethyl O-[4-(methylthio)-m-tolyl] phosphorothioate) at 0.1% was effective about 10 days. In a comparison of pen spraying and back-rubber treatments with Shell SD4294 (dimethyl 2- ( alpha-methylbenzyloxycarhonyl)-l-methylvinyl phosphate), 0.1% sprays required 7 applications, 0.25% sprays 4 or 5, and 2% back rubbers 2 applications to provide practical all-season horn fly control. Tests of a semi-automatic sprayer of original design indicated that the simple, inexpensive device might have practical use. In tests with photo actuated automatic sprayers, the application of synergized pyrethrins provided complete horn fly control all season. DDVP at 0.01% and Shell SD4294 at 1% also provided horn fly control when applied daily with the automatic sprayer. Animals having access to ronnel-medicated salt had lower horn fly populations than animals receiving plain salt. Feces of animals receiving 2 or more mg./kg./day of ronnel were toxic to larvae of house fly (Musca domestica L.) and horn fly.

Document Type: Research Article

Publication date: June 1, 1963

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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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