BACTOFIL — this bio-preparation contains various types of bacteria, such as Azospirillum brasiliense, Azospirillum lipoferum, Azotobacter vinelandii, and others. The preparation is used to increase the yield of agricultural crops. It is applied as a water solution for spraying crops or as soil fertilizer. The preparation was developed by the Ukrainian company Agrobuilding Alliance "Astra". The product is intended for use on crops such as sunflower and corn. For these crops, the recommended dosage is 1.0 to 2.0 liters per hectare, and it may also be used in an amount up to 1.5 liters for treating crop residues. BACTOFIL provides effective action due to its high bacterial strain titer, reaching up to 5.2×10⁹ CFU/cm³. The preparation is environmentally safe and contributes to improving soil fertility through natural nitrogen fixation processes.