Stem and root diseases cause significant yield loss in soybean fields across Minnesota each year. These diseases are often very difficult to manage, and management effects have been hindered by a lack of essential information about the diseases. This project will develop molecular tools (PCR primers) to quickly and accurately identify, diagnose, and quantify important root and stem pathogens in soybeans. The researchers will determine the characteristics of the most common and significant Fusarium species that kill and damage soybeans in Minnesota and factors that contribute to their ability to cause disease and reduce yields. They will also determine the effects of rotation, resistance...