David Owens, Extension Entomologist, owensd@udel.edu
Soybean
Continue scouting for corn earworm and stink bugs. Especially in double crop soybean, pay attention to defoliation. Green cloverworm populations have increased a bit during the past 10 days, and soybean looper are starting to show up. We are catching quite a few green stink bugs at some of our trapping locations. As a general reminder, stink bugs tend to have very aggregated distributions in fields, meaning a subsection of the field may only require treatment. Our thresholds for stink bugs (green, brown, brown marmorated, dusky, and red shouldered combined) is 5 per 15 sweeps. The typical earworm flight this time of year is off to a bit of a slow start. Pay special attention to double crop soybean. As a reminder, NCSU has an earworm threshold calculator: https://www.ces.ncsu.edu/wp-content/uploads/2017/08/CEW-calculator-v0.006.html.
Guess The Pest is taking a brief hiatus this week. Many thanks to those who have logged guesses. For those of you who have not, there is still time!!!