Green stink bugs are being found in soybean near Ames but their populations are relatively small and I do not expect economic damage to occur. It would not be unusual to find them throughout at least the southern half of Iowa, especially because many people are in their fields looking for soybean aphids. This insect occasionally is a problem in Illinois. Mike Gray, extension entomologist at the University of Illinois, provides the following information on stink bug biology and treatment considerations.
Iowa State University
Rice, Marlin E., "Stink bugs in soybean" (2001). Integrated Crop Management News. 1996.
The Iowa State University Digital Repository provides access to Integrated Crop Management News for historical purposes only. Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user. Users should make their own assessment of the information and whether it is suitable for their intended purpose. For current information on integrated crop management from Iowa State University Extension and Outreach, please visit https://crops.extension.iastate.edu/.