Feed Additive Larviciding to Control Face Fly

Abstract
Insecticides were fed to dairy cattle to face-fly-larvicide subsequent manure. Effectiveness was tested by introducing first-instar larvae. Effective were zinc oxide (40 mg/kg body weight); fenthion, barthrin, dimethrin, and 3-4 dimethyl benzyl ester of chrysanthemumic acid (10 mg/kg); coumaphos (0.25 to 10 mg/kg); ronnel (1 mg/kg); and Bayer 22408 (naphthaloximido-O,O-diethyl phosphorothioate) (0.25 and 1 mg/kg). Bacillus thuriugiensis, ground Ryania speciosa stem (wood (alkaloid ry anodine) C25H35O9N or C20H37O9N), carbaryl, methoxychlor, malathion, diazinon, and sodium zirconium lactate were ineffective at dosages tested.

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