Mason does an excellent job explaining exactly why we are seeing what we are seeing with the low nitrogen (ROI) plots and the variability of the response to being short on N. If done right, zones aren’t just a pretty picture. Baseline Rx is the start to a better more efficient fertilizer program!
Quick follow up on the ROI trial with only 30 lbs of N applied to no till corn on corn. Nitrogen definitely masks mistakes, but really how low can we go on the Zones 4 & 5’s if stress is mitigated and we have good planting conditions?