The Rizotaktiv Concentrate preparation is a suspension concentrate containing nodule-forming bacteria Bradyrhizobium japonicum. The formulation includes three bacterial strains: eko/001, eko/002 and eko/003. The viable cell count in the preparation is not less than 1x10^10 CFU/g. The preparation belongs to the category of biological preparations and is used to increase the yield of agricultural crops. The manufacturer of the preparation is the Ukrainian LLC "Agroekologiya". The preparation is used in agronomy, particularly in soybean cultivation, to ensure effective nitrogen fixation from the air due to the action of the bacteria. It is recommended to apply the preparation by treating seeds or spraying crops according to the instructions.