Over the past week, we have observed yellow patches developing in soybean fields across Iowa (Figure 1). There are several different causes, including spider mites and soybean cyst nematode. However, we will look at three additional problems that are causing these patches: sudden death syndrome, charcoal rot and top dieback.
Iowa State University
Mueller, Daren S., "Identifying the Cause of Yellow Patches in Soybeans" (2012). Integrated Crop Management News. 126.
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 Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user.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/.