Many issues can occur in soybeans during the reproductive stages, such as evidence of insect feeding, stunted pods or damage or discoloration. READ THIS ARTICLE from USB for some common issues, as well as possible causes to help diagnose the problem and take steps to address it.
Image from: http://graincrops.blogspot.com/2013/08/frogeye-leaf-spot-of-soybean-active.html
