Monoammonium Phosphate, widely abbreviated to MAP contains the most phosphorus of any common solid fertilizer. Like DAP, MAP is a compound fertilizer, combining phosphorus and nitrogen in a single granule. With its high nutrient content and water solubility, MAP is favoured by farmers for its ability to enhance crop yields and improve soil fertility as it can be applied directly into the soil where the moisture breaks apart the molecules. After DAP it is the second most widely used phosphorus-based fertilizer.
MAP’s manufacturing process is relatively simple. The production begins with the creation of phosphoric acid from phosphate rock. Phosphate rock is first reacted with sulfuric acid in a process called acidulation to produce phosphoric acid and calcium sulphate, this is then combined with ammonia to form MAP. This reaction generates solid granules, which are dried, cooled, and screened for uniformity. Finally, the MAP fertilizer is packaged and distributed to agricultural suppliers and end-users. This straightforward process ensures the creation of a valuable fertilizer rich in essential nutrients for optimal plant growth and crop yield.