Using an effective seed treatment offers protection for 2021, but test fields going forward. By 4/15/2021 Soybean planting will be in full swing before we know it, and farmers have done all they can to prepare for a top-notch crop in 2021. There’s one thing most are missing, however: Have you tested your fields for soybean cyst nematode (SCN)? If not, you should. The nasty nematode is moving across the soybean belt at a rapid rate. “SCN continues to move into new counties,” says Daren Mueller, plant pathologist at Iowa State University, who says the pest is spreading beyond the Corn Belt into New York and Georgia and claiming new territory with each passing year.