RESEARCH OF PHYSICO-CHEMICAL AND COMMODITY PROPERTIES OF AMMOPHOS ENRICHED WITH BROWN COAL, SOLID AND LIQUID SODIUM HUMATE

Background.Ammophos used in plant growing has a disadvantage - a low utilization rate of phosphorus pentoxide. To increase the agrochemical efficiency, it is combined with brown coal and humates. Purpose.Determination of equilibrium moisture content, caking, moisture capacity and commercial characteristics of ammophos enriched with brown coal, solid and liquid sodium humates. Methodology. Physicochemical methods were used to control the properties of products: hygroscopicity by the Pestov method, moisture capacity by the method of moisture absorption, etc.Originality.The values of moisture sorption at a relative atmospheric humidity of 40, 60, 80 wt.%, Moisture capacity, caking of ammophos, its commercial characteristics when enriched with brown coal, solid and liquid sodium humates have been determined. Found conditions for drying, bulk storage and transportation, mechanized application to the soil. Findings. It was found that fertilizers have a low equilibrium moisture content, high moisture capacity, and do not cake. The obtained data served as a scientific basis for bulk storage, transportation and mechanized seasonal application to the soil. Highlights: - physicochemical and commercial properties of ammophos; - enrichment of ammophos with brown coal, sodium humates; - the conditions for drying, bulk storage and transportation are justified.