Anotace:
Peculiarities of growth, productivity and health condition of pine stands affected by annosum root rot were investigated in conditions of Volyn Polissya of Ukraine.The research was conducted in the forests of the State Enterprise "Gorodotsky FH" and SE "Manevitsky LH", which are subordinated to the State Agency of Ukraine for Natural Resources of Ukraine and located in the Manevytsky-Volodymyrets Physical-Geographic District of the Volyn Polissya of Ukraine. The purpose of the research is to detect differences in physical and chemical properties of soils in the center of drying out of the plumage and in the interfacial space (control) affected by the root sponge of pine plantations. It was revealed that the soil in the root of the root spider's lesion is poorer than organic soil (humus) compared with the soil of the interfacial space. At the same time, these soils are richer in the content of nutrients (NРК). The granulometric composition and specific gravity in soils in the center of drying out of the crumbling and in the interfacial space practically do not change. Humidity in all experimental soils in the center of drying out of the drooping to a depth of 50 cm is higher on average by 28%, and in deeper horizons - by 6% less than in the intercostal space. The hardness of the soil in the foaming areas throughout the depth of the profile is greater (especially at the depth of the arable layer) than in the interfacial space. It was discovered that the damage by the root sponge of pine stands established on the ancient lands depends on a complex of factors limiting the toppling of the soil layer due to its consolidation, especially at a depth of 50 cm. This contributed to the concentration of root systems in the upper layers of the soil, which in conditions abrupt changes in the hydrological regime can lead to a decrease in the stability of plantings, in particular to the root sponge.