The monograph systematically describes the results of the development of technology for obtaining bioorganomineral fertilizers that meet the requirements of organic agriculture on the basis of mature compost produced on the basis of cattle manure, bentonite, phosphate flour, various mineral fertilizers and microorganisms assimilating molecular nitrogen of the atmosphere.The monograph is intended for scientists and specialists working in the field of chemistry and technology of organic and mineral fertilizers, agrochemistry and soil science, as well as for undergraduate and graduate students of the above-mentioned specialties.