IndigoS-30 is a bio-preparation intended for use in agriculture. The preparation is used for pre-sowing treatment of cereal crops such as wheat and barley, as well as corn. The preparation contains the active ingredient Bacillus simplex SYM00260 with a total bacterial titer not less than 1*107 CFU/ml. The preparation is used at a rate of 2 liters per ton of seeds, once. Use of the preparation contributes to improved germination and plant growth. The manufacturer of the preparation is the company IndigoAg, located in the USA. The preparation has a water emulsion form, ensuring ease of application.