Monoammonium Phosphate fertilizer contains 12% Nitrogen (N) and 61% Phosphorus (P) and it is 100% water soluble. Monoammonium Phosphate fertilizer is mostly used as a source of Phosphorus (P) and Ammonical Nitrogen (N).MAP has a higher content of Phosphorus (P) compare to most other fertilizers and it's used when high percentages of Phosphorus (P) is needed or for blooming plants including fruits and vegetables. Since, it is 100% water soluble it could also be applied as a foliar application, which is the most efficient way of applying any kind of fertilizer.