Worldwide, mother nature is not making new phosphate deposits to meet agricultural demand.  The reserves in premium rock phosphate deposits are decreasing.  Thus, it might require the processing of, for example, 125 tons of rock phosphate raw material to obtain the same amount of P derived from 100 tons previously. Phosphorus is the second most limiting nutrient in crop production.  But its behavior in soils limits its availability and can make adequate crop P nutrition an essential management issue. Fertilizer for monoammonium phosphate (MAP, or 11-52-0) is currently… Read More →