The soybean aphid population along the Red River Valley has increased exponentially in recent weeks. “Soybean aphid populations have been increasing recently, mainly due to our moderate weather that has provided favorable reproduction conditions when we’re in these moderate temperatures in the mid-70s to low 80s,” said Janet Knodel, NDSU Extension entomologist. Knodel reminds farmers to keep the 250 aphid per plant economic treatment threshold in mind. The recent rains can wash aphids away, but at this time of year, aphids tend to cling to the lower canopies of plants and take shelter from the weather.
