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Iowa | From the air I often see streaked corn from 30" ammonia preplant. Some years it's quite bad.
That being said if I run ammonia it's on 30's. I also apply some N with the planter and/or broadcast to buy some time till root systems can reach the ammonia.
Based on what I see over and over - in a perfect world with no budget I would apply ammonia on 15" spacing with a coulter rig.
When I was a kid there was a guy around here (now retired) that had a bar set up on 20" spacing. It wasn't the only thing they did differently but they felt strongly about the practice. Their yields weren't exceeded by much of anyone in the area. | |
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20" anhydrous
