Polyvinyl Chloride-Insecticide Pellets Fed to Cattle to Control Face Fly Larvae in Manure123

摘要: Polyvinyl chloride (PVC) pellets containing diazinon, dichlorvos, dimethoate, and dimetilan, acetone solutions of these insecticides were added directly to cattle manure fed determine effectiveness against larvae Musca autumnalis De Geer in manure. All PVC or solution very effective when manure, producing 100% mortality at 0.0003% Dimetilan produced 95% 0.000003%, diazinon dichlorvos 92 mortality, respectively, 0.00003%. Insecticides solution, 5 mg/kg per day, not larvicides However, the same dosage pellets, except dimethoate + fenthion trichlorfon through 4 days after termination treatment. Diazinon PVC, most promising materials, last feeding day 0.5 day. In further trials with PVC-diazinon PVC-dimetilan, reduction pellet size, simultaneous increasing number fed, improved larvicidal but dimetilan. Increasing by decreasing concentration insecticide increased dimetilan did alter diazinon. Rate passage PVC-insecticide bovine digestive tract specific gravity. One-eighth-inch cubes 1/16-inch cubes, which had almost identical rates, found pass more rapidly than 1/32-inchcubes. Time maximum excretion was necessarily time greatest because loss insectide from subsequent degradation while tract. Shell Chemical Company Animal Health Product V-13 dichlorvos-PVC, a dairy herd for an entire summer ¼ control face fly larval development There no detectable toxicity catlle residues milk.