Abstract

Hylemya brassicae (Bouche) 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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