PRODUCTION OF HUMINOUS SIMPLE SUPERPHOSPHATE AND ITS AGROCHEMICAL EVALUATION

The processes of obtaining humic simple superphosphate by disintegrating ordinary phosphate flour obtained from the Central Kyzylkum Desert with sulfuric acid in various proportions, adding acidic superphosphate mass before ammonization, and adding oxidized brown coal were studied. Agrochemical tests of humic simple superphosphate were conducted. The addition of oxidized carbon to the acidic superphosphate mass before ammonization and drying does not lead to a decrease in the content of ordinary superphosphate, as usually occurs when obtaining ordinary superphosphate by disintegrating phosphorites with sulfuric acid and drying. However, it leads to a significant increase in the relative content of Р2О5 in the assimilable composition of cotton.