Bruce Potter, University of Minnesota IPM specialist at Lamberton reminds growers that the economic threshold is still 250 soybean aphids/plant with 80 percent or more of the plants infested.

Soybean aphids have become the most damaging insect pests in soybeans; untreated populations can cause 40 percent or more yield loss. There’s a very reliable treatment threshold, developed from ...

Soybean aphids lay their eggs in the fall on shrubs ... and determine the average number of aphids per plant. The economic threshold is 250 aphids per plant in growth stages R1 to R6.

She said one of the most common pests on both sides of the state is the soybean aphid. She said other common ... on how to spot insect issues, look for thresholds, and be aware of pesticide ...