Fungicide seed treatments may help reduce root rots when genetic resistance is not an option. This is often a problem with reduced tillage. Non-rotated soybeans are often the most severely affected. High levels of this disease have shown up in southwest Minnesota the past two years. Scores for this are subjective, with no genetic resistance available.
Varieties can perform differently in different areas.
Performance may be related to any one or a combination of canopy architecture, flowering habit or biochemical processes. Any current variety can be overcome by the disease when favorable conditions for the disease exist. Growers should start to consider using resistant varieties when SCN is found in a field. Early use of resistant varieties will help maintain productivity in infested fields. Ignoring SCN can lead to high nematode populations, which can prevent even SCN-resistant varieties from yielding well.