Integrated Crop Management News

Document Type


Publication Date



On June 16, Brian Lang, extension specialist-field crops, found soybean aphids on V2-stage soybean plants 3 miles southwest of Decorah in northeastern Iowa. Aphids were very uncommon and Brian described finding them like "looking for a needle in a haystack." The aphids were first found by following a trail of ants to the plant were the ants were collecting honeydew from the aphids. The highest density was 30 aphids per plant but aphids occurred on less than one plant out of 100. Most of the aphids were clustered on the youngest unexpanded trifoliate leaf.

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 Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user.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