Sheep Ked Control with Pour-On Applications of Organophosphorus Insecticides

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Pour-on applications of diazinon at 42.2 mg/kg to lambs and shorn ewes eradicated infestations of Melophagus ovinus (L.). Substantial reductions of ked populations were provided by coumaphos at 14.4 mg/kg, crufomate at 40.0 and 80.0 mg/kg, diazinon at 31.6, 21.0, 10.5, and 5.3 mg/kg, and ronnel at 31.6 mg/kg. All insecticides that were used had an established residue tolerance in sheep, and all formulations were available commercially in the United States.

Document Type: Research Article

Publication date: February 1, 1982

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