martin - 10/27/2016 05:07
I think my question is.... did you use the same rate of N on both residues?
There is always this debate...... does soybean residue supply N? I was always taught "yes". I know you guys in the mid-west say "no". However, as Brad Law pointed out, you need to supply extra N because of that residue. So, I look at this as two sides of the same coin: either you use X lbs of N, and add more N for corn stalk residue or wheat residue; or you use Xtra lbs of N, and reduce that rate for soybean N credit.
Either way you look at it, your N rate needs to be different for corn following wheat vs corn following soybeans. And I am presuming you did not do that?
Corn on wheat stubble vs bean stubble?
