The article presents the results of two-year research on U.M.N.I.K. competition aimed at developing an organomineral microbiological preparation based on the filtration sediment, acid pulp and transporter-washing sludge and fungi of Trichoderma genus in order to increase yield and microbiological sanitation of soils. The yields of crops in grain-crop rotations, as well as the results of microbiological study of soils are given.