How wet is it?
The SWROC area has fared better than some others. Rainfall and degree days for this location can be found at https://swroc.cfans.umn.edu/weather
Soybean aphids
I checked on an area of the SWROC where, in previous years, I have often found aphids early.
The scurrying of ants in the upper soybean canopy prompted me to stop and investigate the soybeans at that spot. Sure enough, those ants were herding and tending soybean aphids for the honeydew produced. Several of these multiplant founding colonies were observed.
These early founding colonies can produce large numbers of aphids. These include winged aphids that leave to colonize other plants. Predation, disease, and winged aphid emigration can collapse these colonies. Aphid nymphs with wing pads and a few syrphid larvae predators possibly increased the angst of the ants tending these aphids.
Although the wet conditions may have helped limit soybean aphids this spring, It is too early to get too excited. However, after the 4th, it would be prudent to check a few fields and start getting a handle on aphid colonization in your area. Ants and lady beetles can provide clues in your search.
The Petri dish in your field
Wet leaves and soils favor many plant diseases. We are starting to see more Septoria brown spot, Phytophthora, Fusarium, and other soybean diseases.
Symptoms of Fusarium head blight and bacterial leaf streak are easily found in some of the wheat varieties here.
Happy Trails!
Bruce