Abstract
Methods are described for testing large numbers of insecticides against adults, eggs, and newly hatched larvae of the oriental fruit moth ( Grapholitha molesta (Busck)). Of 54 compounds tested by these methods, Guthion® (O,O -dimethyl S -(4-oxo- 1, 2,3-benzotriazin-3( 4 H )-ylmethyl) phosphorodithioate), parathion, methyl parathion, Chlorthion® (O -(3-chloro-4-nitrophcnyl) O,O -dimethyl phosphorothioate), EPN, and Sevin® (1-naphthyl- N -methyl carbamate) were the most effective.

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