BIOCOMPLEX-BTU — this is a biological preparation containing various types of beneficial microorganisms. The preparation includes Bacillus subtilis, Azotobacter IMV B-7090, Paenibacillus polymyxa IMV B-7027, Enterococcus and Lactobacillus IMV B-7085. The preparation is intended for use in agriculture on various crops. It can be used for seed treatment before sowing, as well as for plant feeding during the vegetation period. The preparation is applied to cereal, legume, vegetable crops, as well as straw and post-harvest residues of agricultural crops. The dosage of the preparation depends on the type of crop and stage of application: for seeds, 0.5 – 2.5 L/ton can be used, and for plant feeding — 0.4 – 1.5 L/ha or more. Treatment is carried out during the vegetation period with an interval of 7 to 14 days. The preparation can be used both in industrial and private agriculture. For seed treatment of vegetable crops, use 5 ml per 250 ml of water or per 100 g of seeds. For feeding rose seedlings, use 10 ml per 5 liters of water for 100 plants. For root feeding and foliar spraying, the preparation is diluted in water in a ratio of 10 to 20 ml per 10 liters of water, depending on the crop's needs.