Effect on the Oriental Fruit Moth of Parathion and EPN Applied to Control the Plum Curculio on Peach1

Abstract

Studies of the effect on the oriental fruit moth, Grapholitha molesta (Busck), of parathion and EPN sprays applied for control of the plum curculio, Conotrachelus nenuphar (Hbst.), were undertaken in peach orchards near Moorestown, N. J., in 1950. Their purpose was to show the extent to which the spray applications reduced overwintering-brood adults and first-brood larvae of the oriental fruit moth and how much this reduction affected the population of succeeding broods up to harvest time of Summercrest and Elberta varieties. Observations made in 1950 and 1951 have already been reported (Brunson 1952). Those made in 1952 and 1953 are presented herein.