Funny you should mention the spreading of bean residue. We have noticed in drone photos where the combine cutting beans turns at the end of the field the following year in corn. You can tell what direction the combine was going because it continues to spread residue until the turn is almost complete then nothing is spread until the crop in the next pass exits the machine. You create a J pattern in the field. We've collected ears from the spots without residue coverage and compared it to the areas with residue. A noticeable difference. Perter Scharff, was with MU, told us there is about 10 pounds of nitrogen in every ton of soybean residue. Fifty bushel beans produce about 5 tons of residue or 50 pounds of nitrogen. I believe it!