Tests with Insecticides Applied to the Soil and Foliage for Tobacco Flea Beetle Control

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Abstract
A two-year study indicated that preplanting, soil treatments with aldrin, dieldrin or were ineffective in controlling the second brood of the tobacco flea beetle, Epitrix hirtipennis (Melsheimer) on flue-cured tobacco. The insecticides failed to prevent emergence of the insect from the soil and population buildup in the treated plots. Zectran® (4-dimethylamino-3,5-xylyl methylcarbamate), Guthion® ( O,O -dimethyl S -(4xo-1,2,3-benzotriazin-3-(4 H )-yl-methyl) phosphorodithioate), Bayer 29493 ( O,O -dimethyl O -[4-(methylthio)- m -tolyl] phosphorothioate), and Sevin® (1-naphthyl N -methylearbamate) were the most effective of the insecticides tested as foliage sprays. Thiodan® (6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepin-3-oxide), G-30494 ( O,O -dimethyl S -(2,5-dichlorophenyl mercaptomethal phosphorodithioate), SD-4402 (1,3,4,5,6,7,8,8-octachloro 3a,4,-7,7a-tetrahydro-4,7-methanophthalan), endrin and Dibrorn® (1,2-dibromo-2,2-dichloroethyl dimethyl phosphate) were less effective than the other materials. The insecticides produced no evidence of phytotoxicity at the dosages used.