Phosphorous and Starter Fertilizer

From AgVenture's Seeds for Success Agronomy Update, April 2014

Soil fertility specialists note the crop actually benefits only 5-10 percent of the time from having the phosphorus banded with nitrogen. The rest of the time, nitrogen gives the full response. In most cases, 28-percent urea ammonium nitrate is equivalent or better than ammonium polyphosphate (APP) as a starter fertilizer. There are some situations where including phosphorous in starter fertilizer is beneficial:

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