Tuberculosis Pathology of Fraxinus Excelsior L. in Ukraine: Symptomatology, Etiology, Pathogenesis

Given the forestry, ecological and economic value of forests with participation Fraxinus excelsior taking into account intensive deterioration their phytosanitary status in modern conditions, a comprehensive study symptoms, causes, pathogenesis ash tuberculosis further development effective protection measures, including using biological products based on Bacillus sp. other myco- microorganisms, is particularly relevant area research. The aim research to identify negative abiotic biotic factors pathology F. excelsior. In process general scientific special methods were used (microbiological, mycological, phytopathological, entomological, silvicultural-ecological methods). It emphasized that common multifaceted phenomenon interrelated processes infectious non-infectious nature, which recent years has led epiphytic dieback now tendency increase. been established most harmful disease within region causes more than environmental damage. Bacteria genera Pseudomonas sp., Erwinia Xanthomonas as well micromycetes, mainly take place concomitant mycobiota. There are five stages (phases) pathology, differ significantly symptoms. species composition insects identified. shown hydrothermal stress catalyst for ash. Direct dependence spread share stands different age groups was revealed. area, reaches epiphytotics excelsior, especially at young age. expediency distinguishing pathological associated indicated, so not confuse disease-catalyzing lead complete degradation