Phytosanitary condition of sptuce plantation in the territory of Chastinsky forest district

The article is focused of studying of sanitary condition of spruce plantation in the conditions of Chastinsky forest district, attributable to Osinsky forestry of Pertmsky Krai. The territory under consideration is forest growth zone of coniferous and broad-leaved woodland. Age-related structure of forest stand is presented by ripening and ripe implantation. The second class of bonitet prevails on the studied areas. Research was conducted in the forests of three types, a territory of allotments is represented with spruce-greenhorn, spruce-sourer, spruce-lime-tree forest. A type of forest growing conditions is B2 and C2. Siberian spruce prevails in the plantation - 54 %, Siberian fir occupies 23 %, Scots pine, small-leaved lime tillet, aspen and European white birch comprise less than 10%. For ripe and overripe implantations an existence of damages is peculiar. The types of damages of woody species were analysed, frost cracks and caves occur frequently, more rarely bending of trunk, separation of cortex, fruit presence and dried out tree branches. Sanitary condition of plantations in the forests of various types showed a tendency to weakening, the calculated index of vital condition correlates with the sanitary status categories. The recommendations for the system of forestry activities are given.