Soybean Cyst Nematode

Soybean Cyst Nematode Distribution in the U.S.


Soybean Cyst Nematode Best Management Practices

  • Plant SCN-resistant soybean varieties
  • Rotate host and non-host plants
  • Keep plants healthy
    • Maintain soil fertility
    • Prevent/reduce pest pressure (weed, insect, disease)
  • Sanitation

Non-host crop plants*Host crop plants*
  • Alfalfa
  • Barley
  • Canola
  • Clover (red, white, ladino)
  • Corn
  • Oats
  • Rye
  • Sorghum
  • Wheat
  • Soybeans
  • Beans (green, snap, mung, bush)
  • Adzuki beans
  • Birdsfoot trefoil
  • Cowpeas
  • Clover (alsike, crimson, scarlet)
  • Garden peas
  • Lespedeza
  • Sweet clover
  • White lupines
  • Vetch (common, hairy)
* Some plants may be considered “poor” hosts and thus be found
listed as host or non-host according to various sources.

Midwest Rotation Example

* Source of Year 1 and Year 3 SCN resistance should be from different
source lines. If this is not possible, the minimum strategy is different
soybean varieties.

Development of Soybean Cyst Nematode

Development of SCN on resistant and susceptible soybean varieties
Two varieties of soybean were inoculated with SCN J2 juveniles, Peking is an
SCN-resistant variety and Kent is susceptible. Images courtesy B. Matthews, USDA
48 hours
After 48 hours, J2 nematodes have successfully penetrated roots of both soybean
192 hours
After 192 hours, nematodes on the susceptible variety (Kent) continue to grow,
yet those on the resistant variety (Peking) appear to be dead or dying from lack
of nutrition.

SCN - resistant Soybean Variety Trials
Aerial view of SCN-resistance soybean variety trial plots in Iowa.

More Information
Download PDF (PDF 1,001 KB)    

The foregoing is provided for informational use only. Please contact your authorized Pioneer sales professional for information and suggestions specific to your operation. Product performance is variable and depends on many factors such as moisture and heat stress, soil type, management practices and environmental stress as well as disease and pest pressures. Individual results may vary.
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