Stink bugs in Soybeans

Green Stink Bug

As our soybean begins to develop flowers and pods, we need to be aware of stink bugs that will begin feeding.  Although more common in the southern US, we have been noticing more stink bugs in soybean the past few years, even some fields where economic damage was seen. There are several species, including the green, the brown, the red-shouldered and the brown marmorated stink bug.  These insects have piercing/sucking mouthparts similar to aphids, and will pierce through the pod to feed on the developing seed. Damaged seed are often flat, shriveled, wrinkled or completely aborted.  Over the next few months, we will begin to see stink bugs move into soybean, and now is a good time to begin scouting.  To sample for stink bugs, take 5 sets of 10 sweeps.  An average of 4 stink bugs per set of 10 indicates an economic population.  We are interested in gathering information on stink bug species distribution across the state and will begin our surveys this week. Please let us know of any fields that might have a high number of stink bugs.

Crop Observation and Recommendation Network

C.O.R.N. Newsletter is a summary of crop observations, related information, and appropriate recommendations for Ohio crop producers and industry. C.O.R.N. Newsletter is produced by the Ohio State University Extension Agronomy Team, state specialists at The Ohio State University and the Ohio Agricultural Research and Development Center (OARDC). C.O.R.N. Newsletter questions are directed to Extension and OARDC state specialists and associates at Ohio State.

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