Fall soil sampling has been promoted for many years as an effective way to detect the soybean cyst nematode (SCN) in fields. But many Midwestern soybean producers already know which fields are infested with SCN and have been growing SCN-resistant soybean varieties for numerous years to manage SCN population densities. The key to profitable long-term soybean production in SCN-infested fields is to prevent SCN population densities (numbers) from increasing.