Video: Scouting Soybean Aphids in Wisconsin
Dr. Eileen Cullen, University of Wisconsin Extension Entomologist, takes you
into the field for a short discussion about scouting for soybean aphids.
Economic threshold is reached when a field average is 250 aphids/plant and populations are actively increasing. To calculate a field average, count the number of aphids on each of 20-30 plants/field, from a sample representative of at least 80% of the field.