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SCN Rotation Strategy via Univ. of MN

Soybean Cyst Nematode (SCN) has been confirmed in North Dakota since 2003.  SCN is spread via soil movement including wind, flooding, and equipment movement.  Soybean cyst nematode can rob 15 to 30% of soybean yield without any aboveground symptoms present. 

Aboveground symptoms are often yellow and short plants.  SCN can be in combination with many other soybean production issues such as iron deficiency chlorosis, drought stress, soil compaction, and etc.

SCN should be confirmed via lab testing.  While samples can be taken anytime when there’s a root zone present, the best time to take samples is near harvest.  Using a soil probe, take 10 to 20 soil samples to a depth of 6 to 8 inches focusing on collecting from the root zone.  Soil cores should be collected in zig-zag pattern.  Mix samples together.  A one pint mixed-soil sample is sufficient.  Place sample in a plastic bag (no paper) and keep in a cool place.

SCN can be managed with crop rotation, plant genetics, and soil nematicide use.  Once SCN is in a field, it will reside in the field for continuity. 

SCN Rotation Strategy via University of Minnesota Extension Service

Resources:

Soybean Cyst Nematode Management Guide via Univ. of MN Extension Service

SCN: Soybean Cyst Nematode Management Guide via Plant Health Initiative

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