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ecmn | Nobody can answer that. Impossible to predict that. We know the removal rate that the soybeans are going to pull from the soil. But we have no measurement of your phosphorus cycle in your soil. I what I mean by that is how well the soil is replenishing the available pool.
Your P1 is a measure of soil function. The higher your soil is functioning, the less the P1 will drop.
The University of Minnesota has a guideline that with the level that you have there's very little probability of a crop response. So they would recommend very little to no phosphorus fertilizer would need to be applied this year.
Okay, so I didn't apply any the first year and nothing changed. The one field has gone 7 years and two different fields have gone 12 years of applying none most years, and applying a little some years just because I'm not believing what's happening.
P1 is still at the exact same number it was in the beginning. So I'm following the recommended guidelines and it's working | |
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Hypothetical for those who know P use in Beans
