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2021 Soybean Cyst Nematode (SCN) Sampling Program (08/26/21)


We encourage soybean growers to sample for soybean cyst nematode (SCN) this growing season, and NDSU Extension and the North Dakota Soybean Council are working together again to coordinate a soybean cyst nematode (SCN) soil testing program.


There are three main reasons to soil sample for SCN.

  1. It is the best way to identify an infected field (do you have SCN?)
  2. It is the only way to quantify how bad your infestation is (how high are your egg levels?)
  3. It is the best way to determine how well your management tools are working (are your egg levels changing?)


Anyone interested in soil sampling for SCN can pick up to three pre-labeled SCN soil test bags from their County Extension office. The laboratory fees from SCN samples submitted though the sampling program are covered by the North Dakota Soybean Council. A total of 2,000 SCN soil test bags will be available to growers on a first come first serve basis.

To submit a sample; fill the bag with soil, provide site information, and send the bag to the partner lab (Agvise). Results will be mailed directly to the submitting growers. Notably, laboratory fees are covered for samples submitted in the pre-labeled bags only, so it is critical to pick them up from the county Extension office.

The egg levels and geospatial positions from previous years samples that were used to generate SCN distribution maps in North Dakota show ‘hot spots’ in much of the SE and EC part of the state, and movement west and north (Figures 1 and 2). In 2021, we will use egg level data and add to the map. Importantly, NDSU does not have access to any personal information – just the egg level and geospatial data to generate a map.

SCN survey map from 2013-2020.png
SCN Survey map in Southeastern ND from 2013-2020.png



Sam Markell

Extension Plant Pathologist, Broad-leaf Crops