Insect Alert For

Soybean Aphid

Risk Level:
Moderate Risk
Affected Area:
Full page
Alert Details

Soybean aphids will continue to reach or exceed economic thresholds on a scattered basis from the northern Plains states east into the upper Midwest and potentially into the Great Lakes region in the next week. The greatest threat at this time continues to remain in the eastern Dakotas, far northeast Nebraska, northern Iowa, and into Minnesota where the majority of treatments are occurring. This region, however, is also seeing the soybean crop advance into or past the critical pod set (R6) stage, and many fields will no longer warrant treatment in the next week or so, if not sooner. Scouting and treatment decisions should be made on the field level, as later-planted fields may be at more risk at this point and soybean aphid populations are varying widely in many areas, even from field to field. Further east, problems appear to be more isolated but reports of some building aphid populations in the Great Lakes region and a crop that is generally a little further behind those that are located to the west will still warrant continued scouting for the next few weeks. As a result, Moderate risks remain in the forecast across the Great Lakes region as well in the next week.