PHYSICO-CHEMICAL CHARACTERISTICS OF AMMOPHOS FROM A SOLUTION OF ENRICHMENT OF PHOSPHORITES OF CENTRAL KYZYLKUMS WITH EXTRACTION PHOSPHORIC ACID

Abstract

However, gradually the requirements of agriculture for mineral fertilizers began to be revised due to the accumulated experience in the use of fertilizers and the shortage of sulfur and calcium in phosphorus-containing fertilizers, as well as the requirement to produce part of mineral fertilizers with reduced solubility of nutrients.