David Owens, Extension Entomologist, owensd@udel.edu Soybean Japanese beetle and Asiatic Garden beetle are active, as are the remaining usual defoliators. Dectes stem borer is beginning to emerge out of the soil; emergence typically peaks around mid-July. I have seen it… Continue Reading
David Owens, Extension Entomologist, owensd@udel.edu Tree Fruit Continue scouting for stink bugs. Most of our blacklight traps are only capturing a handful of stink bugs, but our trap west of Greenwood captured 110 over the last three nights. Blueberries Scout… Continue Reading
David Owens, Extension Entomologist, owensd@udel.edu Corn Begin scouting for Japanese beetle defoliation and for brown stink bugs. NCSU thresholds for stink bugs are 10 or more bugs per 100 plants at V14-VT. Please note that stink bug thresholds more than… Continue Reading
David Owens, Extension Entomologist, owensd@udel.edu Japanese beetles have begun to emerge. Begin monitoring grape vines for defoliation and blueberry fields for adult activity. Adults will scar up and feed on the berries. Acetamiprid and carbaryl provide very good to excellent… Continue Reading
David Owens, Extension Entomologist, owensd@udel.edu Japanese beetles and June beetles are active. June beetles will feed on raspberry and blackberry fruit. Japanese beetles will cause defoliation. They aggregate and may need to be spot treated in some plantings.
