Phytosanitary assessment of plantings of the memorial site “Klyny” of the “Oleksandria” dendropark of NAS of Ukraine

Abstract

A phytosanitary inspection of the tree plantations of the memorial composition “integral prismatiod”. The affection of tree diseases was established visually in the presence of pathologies. In the examination of Fraxinus excelsior was used the method proposed by T. Kowalski et al, 2010. 43% of trees are healthy, about 30% of trees have minor pathologies, 21% of trees are very weak, 6% of trees are dry or withering. The main diseases were rot, necrosis and cancer, drying of the crown. The most dangerous disease was halar necrosis of Fraxinus excelsior, which led to the drying up of a large number of trees and affected half of the living trees. The prognosis of Fraxinus excelsior plantations is unfavorable. A change of dominant breeds will take place on the site, Acer platanoides will take the dominant position.