Plant Health Initiative

Soybean Aphid - Resources

• Soybean Aphid Research Update 2011 -- NCSRP
  (Read online or order a free print copy by calling 1-800-383-1423) 
• Soybean Aphids in Iowa (SP 247)

Field guides

 

• Soybean Aphid Field Guide 2nd Edition - Iowa State University (pdf)
• 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 more accurately when scouting.

North Central IPM Center Regional Soybean Aphid Suction Trap Network. Posts weekly winged soybean aphid counts for 10 North Central states.

Soybean Aphids - Northern Plains IPM Guide

 

State Extension fact sheets and websites
Illinois	Soybean Aphid (pdf) The Bulletin - pest managment and crop development information for Illinois
Indiana	Pest & Crop Newsletter
Iowa	Aphid Field Guide 2nd Edition - Iowa State University (pdf) Stay Alert for Soybean Aphid - 2011   ISU Soybean Aphids website Soybean Aphids in Iowa (pdf) Host Plant Resistance to the Soybean Aphid (pdf 4 MB)
Kansas	Soybean Aphid - A new pest in Kansas (pdf) Kansas Insect News
Michigan	Soybean aphid fact sheet (pdf) Extension News for Agriculture
Minnesota	The Soybean Aphid in Minnesota website Just for Growers
Missouri	Integrated Pest Management
North Dakota	Soybean Aphid website Crop and Pest Report
Nebraska	Crop Watch
Ohio	Soybean Aphids factsheet Ag Crops Network
South Dakota	Soybean Aphid in South Dakota (pdf)
Wisconsin	Soybean Aphid in Wisconsin webpages Wisconsin Crop Manager
Ontario, Canada	Agronomy Guide for Field Crops: Soybean/Soybean Aphid Crop Pest Ontario

 

Soybean aphid biological control

The Good Guys - Natural Enemies of Insects - Illinois Natural History Survey

Soybean Aphids in Iowa (pdf) includes a section with photos of aphid natural enemies.

Biological Control of Insect Pests on Field Crops in Kansas (pdf)

Identifying Natural Enemies in Field Crops. Field manual available from Michigan State University Extension

 

The NCSRP Soybean Aphid Research Report 2008 (pdf) is an older update but still contains much relevant and useful information on biological control, genetic resistance, aphid early-warning systems, revisiting the 250 threshold, and treatment recommendations.

Bulletins and reports

USDA Regional Pest Alert: Soybean Aphid (pdf)

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

 

First reports

Illinois Natural History Survey - Soybean Aphid Discovered

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