Production of Soil Conditioners Based on Coal Oxidized with Hydrogen Peroxide, Bentonite, Phosphate Raw Materials, and Mineral Fertilizers
Akhmedova I.K.
Institute of General and Inorganic Chemistry, Academy of Sciences of the Republic of Uzbekistan, Uzbekistan.
Namazov Sh.S.
Institute of General and Inorganic Chemistry, Academy of Sciences of the Republic of Uzbekistan, Uzbekistan.
Usanbaev N.Kh.
Institute of General and Inorganic Chemistry, Academy of Sciences of the Republic of Uzbekistan, Uzbekistan.
Kodir Raximov *
Namangan State Technical University, Uzbekistan.
*Author to whom correspondence should be addressed.
Abstract
The article presents the results of obtaining soil conditioners based on coal oxidized with hydrogen peroxide, containing a large amount of humic acids, crushed bentonite, phosphate raw materials, urea, ammonium sulfate, and potassium chloride in wide proportions. As a result of the interaction of humic acids in brown coal with phosphate raw material components and bentonite, an increase in the solubility of plant nutrients was observed. The optimal ratio of components and the degree of activation were determined for obtaining soil conditioners with an optimal amount of nutrients in a form that the plant can assimilate.
In addition, the study assessed the influence of these air conditioners on the physicochemical properties of the soil, including pH, cation exchange capacity, water retention, and aggregate stability. The synergistic interaction of humic acids with mineral fertilizers improved the soil's nutrient supply.
Keywords: Soil conditioner, brown coal, humic acids, phosphorite, bentonite, urea, ammonium sulfate, potassium chloride