See Extension fact sheet PP-13 Soybean Variety Reactions to Soybean Cyst and Root Knot Nematodes, or check seed company sources for information on varieties and resistance. Exclusive use of resistant varieties is not recommended. Yearly monitoring of egg numbers is important to detect any shift in SCN races. If continuous resistant soybeans is selected as the major control measure, it is important to remember that resistant varieties are still attacked by the nematode. They are resistant because they prevent or limit nematode reproduction, but the nematodes can enter the root and cause damage.
Some reproduction can occur.
They will still yield better than a susceptible variety. For these reasons, chemicals are generally not recommended. The best way to confirm an SCN infestation is to sample soil when symptoms are first seen. Or, if the white or yellow females are not observed, at the end of the season once the crop is harvested. The Nematode Assay Program provided by Delaware Cooperative Extension can provide this information.