Sioux City, Iowa

The producer in the picture is helping to visually represent the effect that PRO CAL 40 had on his soybean crop. He applied 1 ton/Acre of PRO CAL 40 to the land on the right side of this picture. The treated area yielded 5 to 15 bushels better than the untreated area according to the yield monitor. This Missouri River Valley soil is a silt loam soil with a pH of 8.1.