Bulat A. Peculiarities of pine stands' damage by root rot in Khakiv region and disease prevention measures

The object is the peculiarities of arising and forming of root rot locus, biological methods of disease spraeding prevention measures of diffusions of disease; the aim - studying of a defeat peculiarities of root rot in pine stands in Kharkiv region, improvement of evaluation methods of a trees state in its locus and development of measures concerning prophylaxis of disease and biological protection of a stands; methods - foresttaxation, electrophysic, micribiological, pedological, statistical; the new approach - the first the definition of a sanitary condition of a pine trees was offered by the parameters of current electrical conductivity of near cambium layer and the water -physical features of soils of damaged by root rot stands were fixed; the main include - the dynamics of current electrical conductivity(CEC) of near cambium a layer of a pine trees of a different sanitary condition in dependence on age of stands, season and time of day was investigated; the connection between a mechanical makeupof soils and a sanitary condition of a stand, damaged by root rot were fixed; for prophylaxis of mass diffusion of a root root were offered the stams of strain of Pleurotus ostreatus (Fr.) Kumm, characterized by high woodblasting activity concerning of a pine wood; the field is forest management.