Necrotic-cancerous plant diseases and their control measures in stands the city of Surgut

This article provides information about the necrotic-cancerous diseases of plants, widespread in plantations of Surgut. Until now, this group of infectious diseases in the Khanty-Mansiysk Autonomous Okrug is poorly studied, there is no information on the causes of diseases and their harmfulness, measures to combat. Phytopathological analysis of green spaces Surgut has shown a high degree of distribution (from 5,2 to 93,2 %) and the intensity of the damage (9,5 to 72,8 %) plant necrotic-cancerous diseases. Pathogens are phytopathogenic fungi divisions of Deuteromycota (66,7 % of the total number of detected species of fungi), Ascomycota (26,7 %) and Basidiomycota (6,7 %). Under the conditions of the north are dangerous fungi Thyrostoma compactum, caused by an infectious withering (tirostomoz), of elm (Ulmus pumila) and Tubercularia vulgaris, causing necrosis of many plant species (Pinus sylvestris, Betula rubescens, Betula pendula, Padus avium, Crataegus sanguinea, Ulmus laevis and Ulmus pumila )...