Each year extension plant pathologists from across the United States work to develop efficacy tables for fungicides in corn and soybean. This year there have been several additions in products, and some new diseases as well. For example Tar spot in corn and target spot in soybeans. These ratings are based off of our independent trials, conducted over many locations and years.
Soybean fungicide table: here
Corn fungicide table : here
Soybean seed treatment active ingredient table: here