In recent years, agriculture has faced the problem of fi nding promising drugs that are eff ective in combating plant diseases, alternatives to synthetic pesticides that can have a negative impact on both living organisms and the environment as a whole. To solve this problem, the possibility of using biological methods of protecting agricultural crops is being studied. In particular, special attention is paid to the search for new strains of bacteria – natural antagonists of pathogenic microorganisms that could be used instead of synthetic chemicals.