David Owens, Extension Entomologist, owensd@udel.edu
Spotted wing drosophila and Japanese beetles continue to be the primary pests of concern in caneberries, blue berries, and grapes. SWD thresholds are essentially 1 per trap or at least begin treatments when they are first caught in fields. Japanese beetles will feed on blueberries and can heavily defoliate grapes. Consider materials such as Carbaryl and Assail.