The current economic threshold for soybean aphids is 250 aphids per plant with 80% of the plant infested and populations increasing. The article discusses the basis for this threshold and two scouting methods, including a speed scouting app, and management guidelines.
The infestations appear to have occurred recently, as the aphids were only observed on leaves that had not yet expanded completely. The economic threshold for late vegetative through R5 stage soybeans is 250 aphids per plant with 80% of the plants infested and populations increasing.
Reports of suspected dicamba injury to soybean and other sensitive crops are increasing. The author reviews application windows for dicamba in corn, a possible area of concern, and outlines what growers can do if they suspect dicamba injury in their fields.
Liberty has revised its label to provide for an increased application rate in corn and soybean. View the new label rates for corn and soybean with a cumulative maximum per year of 87 fl oz/acre for either crop.
Use CornSoyWater and its app to monitor soil available water and crop water use and to identify fields where stress is likely occurring or will be occurring within the next three days. The tool is free, user friendly, and can help you monitor fields from a distance.
Nebraska's soybean acreage, estimated at 5.70 million acres in the June 30 USDA NASS report, was up 10% from last year and a record high. Nebraska corn at 9.80 million planted acres, is down 1% from last year.