DAP is the most widely used phosphate fertilizer among growers today. It is manufactured by reacting phosphoric acid and ammonia and contains two ammonia molecules. In alkaline soil conditions, one of the ammonia molecules in DAP will revert to ammonia, making it an excellent fit for low pH or alkaline soil. DAP itself is alkaline with a high pH, exceeding 7.5.
As one of the major cropping fertilizers used in across the world, DAP is as a source of both phosphorus and nitrogen; the phosphorus content makes it a true high analysis fertilizer. DAP is used on a range of crops including: sugar cane, cereals, sowing pastures, dairy pastures, fodder crops and also in horticultural crops; for example, vegetables and tree crops.