Iowa State University plant pathologists are part of a new $300,000 research project to study and mitigate tar spot on corn. The project is funded by a $150,000 Rapid Outcomes for Agricultural Research (ROAR) grant from the Foundation for Food and Agricultural Research, which was matched by the National Corn Growers Association, Corteva Agriscience, Wyffels Hybrids, Illinois Corn Growers Association and Purdue...