North Dakota was the 4th largest state in soybean acres in 2015 (5.9 million acres). Soybean cyst nematode (SCN) was first detected in ND in 2003. Since then, SCN has been detected in more than 20 counties, mostly in the eastern half of the state and from the South Dakota border to the Canadian border. In 2013, the North Dakota Soybean Council (NDSC), with grower checkoff dollars, started to fund research to help growers and agronomists become more aware of the presence and problems with SCN within the state. For the past 3 growing seasons, this SCN research/survey project was coordinated by Dr. Samuel Markell of the NDSU Plant Pathology Department. Most of the soil samples for this project were analyzed by AGVISE Laboratories in Benson, MN.
The charts below, provided by Dr. Markell, show SCN sample data compiled over the 3-year data collection period (~1,600 total samples and ~900 samples in 2015). The highest infestations were in the south eastern tier of counties.