Experiments with Insecticides for the Control of Drosophila Breeding

In experiments under field conditions at Beltsville, Maryland, one application of the following insecticides gave good control of drosophila breeding in piles of cull tomatoes: aldrin, dieldrin, ethion, heptachlor, clilordane, methoxychlor, ronnel (Dow ET-57), malathion, dicapthon, Diazinon° (0,0-diethyl 0-(2-isopropyl-4-methyl-6-pyrirnidinyl)phosphorothioate), and Dipterex ° (0,0-dimethyl 2,2,2-trichloro-1-hydroxyethylphosphonate). Malathion, the only insecticide tested under commercial conditions, also gave good control of drosophila breeding in tomato skin piles on the Eastern Shore of Maryland.