Cabbage Maggot Resistance to Organochlorine Insecticides1

Abstract
Hylemya brassicae (Bouché) can no longer be controlled with aldrin, dieldrin, chlordane, or lindane in western New York. The level of resistance is different in 2 areas tested. Diazinon provided fair control in furrow or drench applications to radish but did not prove satisfactory as a preplanting broadcast application at 4 lb per acre. Bay 37289 (O-ethyl O-2.4,5-trichlorophenyl ethylphosphonothioate) and Stauffer N-2790 (O-ethyl S-phenyl ethylphosphonodithioate) were the most effective materials tested. No control was provided by Bay 77488 (O, O-diethylphosphorothioate O-ester with phenylglyoxylonitrile oxime), Temik® (a 10% granular formulation of DC 21149 (2-methyl-2-(methylthio)propionaldehyde O-(methylcarbamoyl) oxime)), NIA-I0242 (2,3-dihydro-2,2-dimethyl-7-benzofuranyl methylcarbamate), Zolone® (O, O-diethylphosphorodithioate S-ester with 6-chloro-3-(mercaptomethyl)-2-benzoxazolinone), Zinophos® (O, O-diethyl O-2-pyrazinyl phosphorothioate), American Hoechst Corp. 2838 (1, 2, 3, 4,-7,7-hexachloro-5-(2, 2, 3, 3-tetrafluorocyclobutyl)-2-norbornene), and Lannate® (methyl N-[ (methylcarbamoyl) oxy]-thioacetimidate).

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