TIMING SPRAYS FOR CODLING MOTH (LEPIDOPTERA: OLETHREUTIDAE) CONTROL ON APPLE

Abstract

AbstractEffective codling moth control was obtained by timing the application of insecticidesito coincide with the period of greatest larval emergence in the orchard. This occurred 6–10 days after first emergence and the latter could be predicted by heat unit summations. In 1971 and 1972 144 and 137 degree-days accumulated from the date on which the first male moth was taken in pheromone traps and the first larvae emerged, respectively.