INFLUENCE OF PROTECTIVE FOREST PLANTATION PARAMETERS ON THE PATHOLOGICAL CONDITION OF PHYTOCENOSES OF THE FOREST-AGRARIAN LANDSCAPES
The problems of phytosanitary condition and sustainability of woody plants with different placement (rows, design, species composition) in protective forest plantations, the taxonomic composition and the ratio of systematic groups of pathogens, as well as the selection of woody plants resistant to diseases and climatic factors and the science-based methods and schemes of their distribution, have been studied. The study has been conducted in protective forest plantations of different purposes and structures in the Volgograd region. The temporary and permanent sites, taking into account the environmental conditions of growth of the main forest tree species, consisting of oak, elm, poplar, maple, ash and others have been analyzed. It is proved that the protective forest plantations belong to ecological factors of regulating the phytosanitary condition of the surrounding agrocenoses. In the multi-row forest belts with dense tree stands the pathogenic complexes are actively formed and are intensively developing, the plants resistance to the most harmful pathologies is being constantly increased. To optimize the phyto-pathological status and sanitary conditions in the surrounding agrocenoses and their rehabilitation, it is necessary to carry out certain forestry activities: sanitary and improvement thinning, reconstruction, rejuvenating and improvement cuttings.