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

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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.

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