Soybean viruses, bean leaf beetles, soybean aphids and Phomopsis spp. all affect soybean seed quality in addition to causing yield loss. The goal of this project is to understand the interactions between soybean viruses (Soybean mosaic virus and Bean pod mottle virus) and Phomopsis spp. (cause of pod & stem blight and Phomopsis seed rot), and to suggest improved crop management practices for soybean viruses and Phomopsis spp. There is some evidence that virus infection predisposes soybean plants to Phomopsis infection; and insect vector activity may also directly affect Phomopsis colonization of soybean pods and stems. The results of this project should be useful for integrating the management...