“Spending” phosphorus fertilizer from the soil

By Les Henry

In my previous column, we established that phosphorus fertilization comes down to simple arithmetic: If we haul more phosphorus off to the elevator than we put on in fertilizer or manure, the phosphorus (P) soil test will go down and with it the crop yield potential.If we add more P than we haul away, over time, the soil test P will go up along with the crop yield potential.

Source: “Spending” phosphorus fertilizer from the soil