This survey was conducted to detect exotic cyst nematodes in cereal and corn producing fields of Wisconsin. The targeted nematodes were Heterodera filipjevi, the cereal cyst nematode; Heterodera latipons, the Mediterranean cereal cyst nematode; and Punctodera chalcoensis, the Mexican corn cyst nematode. Any of these nematodes could potentially impact crop production, management practices and trade if they were accidentally introduced into this state. Sampling was conducted in counties that contain the majority of the wheat acreage in the state, (Brown, Calumet, Columbia, Dane, Dodge, Door, Fond du Lac, Green, Jefferson, Kewaunee, Manitowoc, Outagamie, Racine, Rock, Sheboygan and Walworth, Winnebago). Wheat is the main host for H. filipjevi and H. latipons. Corn, the host of P. chalcoensis is also grown in these counties.
Soil Science Extension
University of Wisconsin Madison