Soybean Aphid Distribution

Distribution of the soybean aphid in the North Central region by county (11/03) Map courtesy of R.C. Venette, University of Minnesota. Click on map to view larger version.

Suction traps are a means to track aphid overwintering flights. Fall flight activity may indicate the size of the overwintering, and following-season, soybean aphid population. Researchers are collecting regional, multi-year data to assess the long-term value of suction traps as a predictive tool. Trap captures can be viewed at the Regional Soybean Aphid Suction Trap Network

Since the initial identification of the soybean aphid in Wisconsin, Illinois, and the Great Lakes area in 2000, the soybean aphid has spread into more than 20 states and 3 Canadian provinces. 

The University of Minnesota developed a survey protocol to detect small populations of soybean aphid and estimate the prevalence and severity of aphid infestations. The survey protocol is the standard procedure used by members of NC-502, a regional group of researchers organized to study soybean aphid.

More details about the survey and a data sheet are available in this pdf file (198K):
Multi State Soybean Aphid Survey
University of Minnesota.

Soybean aphid distribution maps - credits

Aphid distribution maps have been generated each year by Rob Venette, University of Minnesota with information provided by North Dakota State University, University of Minnesota, Minnesota Department of Agriculture, Iowa Department of Agriculture and Land Stewardship, Iowa State University, University of Missouri-Columbia, University of Wisconsin, Wisconsin Department of Agriculture, Trade, and Consumer Protection, University of Illinois, Purdue, Kentucky State University, Michigan State University, Ohio State University, Pennsylvania Department of Agriculture, Cornell, the North Central Pest Management Center, and the National Agricultural Pest Information System.

Information on these pages is from the cooperative effort of researchers throughout the North Central states. Information from this site can be copied and distributed for educational use. Please credit the source with our name and URL: NCSRP Plant Health Initiative at www.planthealth.info. Please do not use copyrighted photos without permission.