CPB Management
There may be a couple of reasons for this, the cool wet early summer probably slowed down beetles and decreased at-plant insecticide efficacy, we have been recording increased tolerance to neonicotinoid insecticides, and the delayed emergence of CPB recorded over the last few years in central MN may now be happening in both locations....For whatever reason, the issue is now management of mixed stages of larvae and adults or simply late season adults, depending on your location. Either way, we're fighting a foliar battle now.
CPB Management 2016 (pdf)
By Ian MacRae
