Integrated Crop Management News

Document Type


Publication Date



Research and extension personnel in Iowa have tracked soybean cyst nematode (SCN) infestations by county since initial discovery of the nematode in Winnebago County in 1978.SCN was discovered for the first time in many different Iowa counties in the 1980s and 1990s. But by 2000, there were only nine Iowa counties in which SCN had not yet been found. The nematode was discovered in a few new Iowa counties from 2000 to 2006, but, it had still not yet been found, or at least officially confirmed, in three Iowa counties – Allamakee, Ida, and Lyon Counties – by the end of 2007.

Copyright Owner

Iowa State University



File Format





The Iowa State University Digital Repository provides access to Integrated Crop Management News for historical purposes only. Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user. Users should make their own assessment of the information and whether it is suitable for their intended purpose. For current information on integrated crop management from Iowa State University Extension and Outreach, please visit