FIELD: manufactory of biostimulating agents. SUBSTANCE: invention relates to manufacturing biostimulating agents from organic substances, in particular, from turf that are used in agriculture (plant growing, animal husbandry) and in medicine also. Method involves preparing by mining and milling organic semifinished product, its treatment with alkaline reagent and the following enrichment with nitrogen. As an alkaline reagent, 0.8% an aqueous solution of sodium hydroxide is used and treatment of organic semifinished product with alkaline reagent is carried out in the ratio = 1:10 mass at temperature 50-60 C. After treatment, settling and separation the prepared humic substances in liquid phase are precipitated with 10-15% sulfuric acid at constant stirring. Then the prepared humic acids gel is washed out up to pH = 6.0, settled and separated from an aqueous solution up to the water content 95-98%, dissolved in 0.4% of sodium hydroxide solution and corrected for the required concentration 1% of content of humic acids by optic density value. Method provides preparing the growth plants biostimulating agent and development that shows the enhanced effectiveness and minimal content of inert impurities and with stable chemical composition. EFFECT: improved preparing method. 2 cl
