Rizogumin is a biological preparation designed to increase the yield of agricultural crops. The preparation contains strains of bacteria Bradyrhizobium japonicum 46 and M-8 at a concentration of no less than 1 billion cells per gram. It is available in peat and liquid forms, allowing convenient use for seed treatment or spraying crops. The use of biological preparations contributes to natural soil fertility enhancement through the activity of beneficial microorganisms, which is especially important for soybean cultivation. The preparation is produced by the Institute of Agricultural Microbiology in Chernihiv, Ukraine.