A Modified Microburet for Topical Application of Insecticides to the Onion Maggot, Hylemya antiqua (Meig.)1

Abstract

The toxicities of 15 insecticides to the onion maggot, Hylemya antiqua (Meig.) were determined by topical application. A modified microburet was used to apply the insecticide solutions to the insect. Toxicity data are recorded as micrograms insecticide per gram of fly. Methyl parathion, dimethoate and Diazinon® (O,O- diethyl O-(2-isopropyl-4-methyl-6-pyrimidinyl) phosphorothioate) Were the most toxic to the onion fly. Heptachlor, dieldrin, endrin, and DDT were the least toxic.