Toxicity of Pesticide Dusts to Honeybees1

Abstract
Laboratory studies were made of the relative toxicity of 55 pesticide dusts to honeybees, Apis mellifera. Materials found to be highly toxic were: DNOSOBP, EPN, sabadilla, lindane, BHC, heptachlor, Chlorthion, Metacide, aldrin, dieldrin, Diazinon, malathion, methyl parathion, parathion, TEPP, compound A-42, compound 340, endrin, and chlordan. Moderately toxic materials were: Potasan, compound 21/116, Q-137, DDT, calcium arseriate, isodrin, compound 1189, tartar emetic, Chlorobenzilate, compound 21/199, cryolite, compound 876, ryania, NPD, TDE, R-242, schradan, methoxychlor, DNOCHP, Aramite, and toxaphene. Relatively safe materials were: sulfur, rotenone, Ovotran, chlorinated terpine, compound Q-128, pyrethrins, compound 923, Neotran, CMU, demeton, allethrin, DMC, Cunilate, Cs-708, and nicotine.

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