Monday, August 11, 2014 Scouting fields around the area today and observed several things. 1. We need rain. 2. Soybean aphid numbers are on the rise. Some fields reaching treatable levels. I will post the speed scouting results tomorrow. 3. Spider mites are present in fields. 4. Japanese beetles are present in some fields.
Japanese beetle feeding in research plots near Rochester, MN. The treatment threshold in soybean is based on percent leaf defoliation. Treatment should be considered at 20% leaf defoliation from bloom to pod fill.