These reports are demonstration trials. Seed companies enter varieties into these trial that have differing maturities. These varieties are then planted into 10 foot by 480 foot strips by order of maturity. For the corn demonstration trial, to account for field variation, a check is planted before and after every four varieties.
The checks on either side of the four varieties are averaged and used to calculate an adjusted yield for each variety. The corn report includes a listing of the varieties as planted by maturity, a listing of the checks across the trial, and a listing of the varieties in order of yield for each maturity group. The soybean report includes the yield for the soybean varieties as planted in the field.