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Extension > Agriculture > Crops > Soybean > Soybean cyst nematode management guide > How important is the soybean cyst nematode?

How important is the soybean cyst nematode?

SCN is the most destructive pathogen of soybean in the United States. Annual yield losses in soybean due to SCN have been estimated at more than $1 billion in the U.S. Because the nematode can be present in fields without causing obvious aboveground symptoms, yield losses caused by SCN are often underestimated.

Yield losses caused by SCN can vary from year to year, and are influenced by soybean variety, climatic conditions, and soil biotic and abiotic factors. In heavily infested fields, SCN can cause soybean yield losses of more than 30%, and in some sandy soils complete yield loss can occur, especially in a droughty year. In addition, SCN can also infect dry beans and snap beans, and cause significant yield loss to these crops.

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