Growth characteristics of pine stands affected by annosum root rot in Novgorod-Siverske Polissya
Journal Title: Лісівництво і агролісомеліорація - Year 2014, Vol 124, Issue
Abstract
Pine stands created in the lands which were used in agriculture for a long time are usually affected by root rot in some degree. The pathogen is basidiomycete fungus Heterobasidion annosum (Fr.) Bref. The disease occurs in pure pine plantations as well as the pine stands close to said ones having admixture of broadleaved species. Physical and mechanical properties of the soils used in agriculture and the lack of microbiota inherent to forest environment make significant changes in the development of the pine plantations created under these conditions compared to the pine plantations on forest soils. Annosum root rot focuses appearance and distribution, which are a consequence of these differences, in turn, affect the formation of trees mortality and the timber growth reducing as well as change the course of growth of these plants, which significantly differs from the course of growth of inter-focal plants in the same conditions. The data analysis allowed to develop a mathematical model and make yield tables for the modal healthy and root rot infected artificial pine stands created on the lands which came out from agricultural use in SE "Holmynske Forestry" in Novgorod-Siverske Polissya The paper presents a forecast for dynamics of taxation parameters of these plants. It was revealed that the productivity of healthy pine trees of І-ІХ age classes is 8-23 % more compared with the pine stands affected by annosum root rot.
Authors and Affiliations
А. Mihaylichenko, I. Ustsky, M. Vedmid, V. Lozitsky
Keywords
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