It is that time of year when Japanese beetles, grasshoppers, or various caterpillars consume the soybean leaf canopy.
Before you spray a foliar insecticide, learn more about tips and tools to use in estimating defoliation and thresholds that justify an application in Nathan's recent blog post: https://croptechcafe.org/defoliating-insects-in-soybeans-2/
Original source can be found here.