Soybean Aphid - Resources

2008 NCSRP Soybean Aphid Research Report  (pdf). Includes  an update on soybean aphid biological control, genetic resistance (aphid resistant varieties coming soon), aphid early-warning systems, revisiting the 250 threshold, and treatment recommendations.

Soybean Aphids in Iowa--2007 (SP 247) by Marlin E. Rice, Matt O'Neal, and Palle Pedersen, is now available to read online (pdf file) or as a print copy from the Iowa State University Extension Online Store.

North Central IPM Center Regional Soybean Aphid Suction Trap Network website . Posts weekly winged soybean aphid counts for 10 North Central states. Click on a site to see trap counts, or view data for each state. Entomologists track the September-October flight numbers to understand what kind of overwintering flight has occurred that season.

Regional Pest Alert: Soybean Aphid (pdf). USDA

Soybean reproductive growth stages R1- R8 and soybean aphid action thresholds (pdf)
University of Wisconsin Extension

A Visual Guide to the Number of Soybean Aphids per Leaflet. On the inside of this folded card you will see high resolution color photos of four soybean leaflets. Each has a specific number of aphids displayed to help you count when field scouting this pest. . Copies can be ordered from the University of Wisconsin Nutrient and Pest Management at 608-265-2660 or npm@hort.wisc.edu

Soybean Aphid Biological Control

Managing Soybean Aphids in 2007— How Will Biological Control Contribute? On March 6, 2007, entomologists from throughout the Midwest conducted a short course on management of soybean aphids in 2007. Summaries and audio tapings of the course are available at the North Central IPM website»

Soybean Aphid Biological Control. The official website of the North Central Regional project for the control of the soybean aphid, Aphis glycines, by importation biological control.

Frequently Asked Questions about using beneficial insects to control soybean aphids. University of Minnesota (pdf)
Soybean Aphid Biocontrol - An Exotic Approach. RAMP newsletter May 2007 (pdf)

First Reports
Illinois Natural History Survey - Soybean Aphid Discovered

Research publications
Soybean Aphid Biology in North America (pdf)
David Ragsdale, David Voegtlin and Robert O'Neil
Assessing the Invasion by Soybean Aphid. Where Will It End? (pdf)
R. C. Venette and D. W. Ragsdale
The Entomological Society of America published a series of excellent research articles on the soybean aphid in March 2004. You can read the full articles in the special feature on the soybean aphid, Entomological Society of America.

First Reports
Illinois Natural History Survey - Soybean Aphid Discovered

Research publications

Soybean Aphid Biology in North America (pdf)
David Ragsdale, David Voegtlin and Robert O'Neil

Assessing the Invasion by Soybean Aphid. Where Will It End? (pdf)
R. C. Venette and D. W. Ragsdale

The Entomological Society of America published a series of excellent research articles on the soybean aphid in March 2004. You can read the full articles in the special feature on the soybean aphid, Entomological Society of America.

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.