type of sprayer needed for spotted wing Drosophila (SWD) management
As spotted wing Drosophila (SWD) was confirmed in our county, we would like to be prepared for possible SWD. If SWD is found, what type of sprayer is needed to apply the insecticide? Have there been any successes with organic sprays? And specifically do you need an airblast sprayer?
Wood County Wisconsin
I assume this is field grown blueberries that may be organic. Spray uniformity is important and this is hard to accomplish without an airblast or some type of air-assisted spray unit to push the spray through the canopy. If they are smaller, thinner bushes, perhaps adequate coverage can be achieved without an airblast unit.
The primary organic insecticides are Pyganic and Entrust. They provide control for 2-3 days and 4-5 days, respectively, assuming no rain.