Northeast Research and Demonstration Farm
The purpose of this study was to determine the optimum application timing of insecticides and/or fungicides on soybean. We compared products applied at either one of two growth stages, R1 (flowering) and R3 (pod set), with a non-sprayed control or a threshold-based treatment. The effect of treatments on foliar disease severity and aphid populations was determined and related to yield.
Iowa State University
Bestor, Nathan R.; Mueller, Daren S.; Robertson, Alison E.; Ritson, Rebecca; and O'Neal, Matthew E., "Fungicide-Insecticide Study on Soybeans" (2011). Iowa State Research Farm Progress Reports. 240.