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Evaluation of Shell SD 8447, SD 8448, and SD 8436 as Candidate Systemic Insecticides for Control of Common and Northern Cattle Grubs1,2,3,4

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Abstract:

Three materials of low mammalian toxicity from the Shell Development Company, SD 8447 (2-chloro-1-(2,4,5-trichlorophenyl) vinyl dimethyl phosphate), SD 8448 (2-chloro-1- (2,4,5-trichlorophenyl) vinyl diethyl phosphate), and SD 8436 (2-chloro-1- (2,4-dibromophenyI) vinyl dimethyl phosphate) showed moderate systemic activity against the northern cattle grub Hypoderma bovis (L..), and the common cattle grub H. lineatum (de Villers), when they were applied to calves by the pour-on procedure. Although early tests indicated 89-100% control with these materials, later tests produced 41 and 60% control on animals treated with SD 8447 at 30 g/head and 46 and 73% control on animals treated with SD 8436 at 20 g/head. SD 8448 was not included in the later tests. The materials produced no significant cholinesterase depression, no indication of toxicity, and no significant differentials in weight gain.

Document Type: Research Article

Publication date: April 1, 1968

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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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