Abstract
This article investigates the processes of producing organomineral fertilizers based on local raw materials, including cattle manure, bentonite, phosphorite flour, and one of the mineral fertilizers potassium chloride (KCl). The raw materials were composted for 35 days, and changes in their chemical composition were analyzed. The obtained organomineral fertilizers were granulated, and their physicochemical properties were determined. The research results demonstrated an increase in organic matter content and the transformation of phosphorus into an available form.