 Tufted apple
bud moth, Platynota idaeusalis (Walker) and Variegated leafroller, Platynota
flavedana Clemens: Tufted apple bud moth is the most serious direct pest of apple
in the most eastern West Virginia counties of Berkeley and Jefferson. Because of this
insect=s development
of resistance to the organophosphate and carbamate insecticides, it is very difficult to
limit fruit injury to under 5%. Variegated leafroller is the most important leafroller
species in the most western fruit producing counties of Hampshire and Morgan, but injury
has been more sporadic and less severe than that caused by the tufted apple bud moth.Chemical control: Degree days are accumulated from first pheromone trap capture in the spring (biofix) in order to time insecticide applications to coincide with egg hatch of two generations per year (June and August). |