To prevent phytosanitary destabilization in apple agrocenoses, it is necessary to include ecologically safe microbiological preparations the protection systems. In Krasnodar region 2016 and 2019 field, laboratory samples of were tested formulation “wettable powder” from collection biological method FGBNU VNIIMK against Venturia inaequalis (Cooke) G. Winter. Of 9 2016, highest efficiency, approa...