Oak diseases in the system of factors that reduce productivity
DOI:
https://doi.org/10.36930/42174310Keywords:
centers of diseases, dynamics, transverse oak cancer, oak fungus, oak tracheal mycosis, oak downy mildew.Abstract
The data of researches of.perennialphytopathological condition of oak plantations of the Right-bank Polissya of Ukraine are given. The dynamics of the centers of oak diseases common for the given region of Polissya is shown. It has been established that the centers of diseases are of local character and influence the oak stands only with their intense development which can be of a violent nature provided by the coincidence offavorable factors including the natural and climatic ones. The growth of the areas of the transverse oak cancer which is observed in the woods of Western Polissya and the decrease of the disease centers in oak plantations of Central Polissya was revealed. The tendency towards the growth of the centers of oak fungus in the period from 2006 to 2014 in Western Polissya and the reduction of area of the disease centers starting from 2013 up to now in the oak plantations of Central Polissya was traced. The centers of other oak diseases are recorded in isolated cases only in some forestries of the research region and are not systematic. Occasionally the cases of detection of downy mildew centers and oak tracheal mycosis are observed. A stable general tendency to reducing the areas of disease centers of oak plantations in the Right-Bank Polissya was found.
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