| NE Ridger - 12/25/2015 21:25
In the first place, I've gotten my best corn yield ever off ground that had phosphorus tests like that. Mehlich-3 phosphorus tested 8-10 ppm. 100 lbs of MAP banded in a rough 2X2. 280 bpa on 40 acres.
I'm not talking about zero applied, I'm talking about a specific situation where at least 1/2 of crop removal is being banded near the row. AND where a healthy soil microbial community is being maintained.
If the ground is being worked multiple times per year, no covers, and very little fertilizer applied, then of course the soil tests are probably going to drop and crop yields will suffer. You've wiped out the fungal networks and there's no one to sell P to the corn roots.
Those are two different situations.
So if your applying a half rate the remainder is being pulled out of the "bank" so to speak. It will deplete over time and my bet is it wont take too long. Can we agree on that? Healthy soil microbials is a whole nother deal and wasent what i was referring to in my original post or any that followed. |
strip till fertilizer savings??
