Susceptibility of silver birch and black alder to several <i>Phytophthora</i> species isolated from soils in declining broadleaf forests in western Ukraine

In declining broadleaf forests in western Ukraine, several Phytophthora species including P. plurivora, bilorbang, polonica, gonapodyides and cactorum were recovered using soil baiting assays identified morphological molecular methods. Pathogenicity tests of selected isolates performed on black alder (Alnus glutinosa (L.) Gaerth.) silver birch (Betula pendula Roth.) to assess susceptibility these two tree the newly detected species. bilorbang polonica showed higher pathogenicity both compared other tested