Nitrofix (Nitragin) — a bio-preparation intended for use in pea cultivation. It contains active substances Rhizobium leguminosarum and Bradyrhizobium japonicum, which ensure effective nitrogen uptake by plants. The preparation is used for seed treatment, promoting improved crop yields. The viable bacterial cell titre is no less than 2.5 x 10⁹ CFU/ml, ensuring high application efficiency. The manufacturer is the company LLC "BIONASERVIS PLUS" from Ukraine. The preparation is produced in the form of an aqueous solution, allowing easy application during seed treatment.