A degree day model for predicting cumulative egg hatch for each brood of the Oriental fruit moth (OFM) was used to time various insecticides for management of this pest on both apple and peach. Control of OFM was significantly better when applications of insecticides were timed for 10-40 percent egg hatch rather than 50-70 percent. The number of applications per brood and the type of insecticde used affected OFM control. There appeared to be a difference in insecticide efficacy and timing on apple versus peach for similar degree day accumulations.
Species 1: Lepidoptera Tortricidae Grapholita molesta (oriental fruit moth)
Keywords: Insecticide Timing, Degree-days
The ESA 2001 Annual Meeting - 2001: An Entomological Odyssey of ESA