SCN-resistant soybean varieties are critical for managing SCN. The scientific definition of an SCN-resistant soybean variety is one that allows 10 percent or less SCN reproduction relative to a standard susceptible variety in greenhouse testing. Not all soybean varieties described as resistant to SCN truly are. In fact, some "SCN-resistant" varieties are completely susceptible, allowing unchecked SCN reproduction. This project provides comprehensive information about how well "SCN-resistant" soybean varieties suppress nematode population densities and how well the varieties yield in SCN-infested fields in Iowa. The project also is revealing relationships between SCN population HG types and yield loss on SCN-resistant soybean varieties with the different sources of resistance.
Key Benefactors:
farmers, agronomists, Extension agents, seed companies, soybean breeders