Soybean viruses have become more problematic in recent years due to increased prevalence of insect vectors. The appearance of the soybean aphid (Aphis glycines) in 2000 and the increasing levels of bean leaf beetle (Cerotoma trifurcata) have played important roles in increasing the range and severity of specific soybean viruses. Yield can be reduced, as well as diminished seed quality due to mottling and decreased vigor.