Ukrainian Journal of Forest and Wood Science

The article presents the results of the investigation of the sanitary condition of the trees of the Botanic Garden of the NULES of Ukraine and analyzed its dynamics for the period 2006–2017. The factors that contributed to the deterioration of the sanitary state and the reduction of the biological resistance of plants of this species were determined. It was established that from 2006 to 2016 there was a gradual deterioration of the condition of spruce. The drying of trees is caused by Heterobasidion annosum (Fr.) Bref. Therefore, the formation of rot and its spread in the root system and the lower part of the trunk are observed. Data are given on the sharp deterioration of the sanitary condition of the European fir trees during the growing season of 2017 as a result of th massive population of their stem pests Ips typographus L. The study of the distribution of stem pests on the trees of the spruce common and the dynamics of their reproduction and distribution is important, since the weakening of the plantings by harmful insects and the pathogens of diseases create favorable conditions for their massive reproduction, and the measures of struggle are quite complex and little studied. The peculiarities of the distribution of stem pests of common eagle indicate the timing of the emergence of bark beetles to the sites of weakened plantations.

spruce European, sanitary condition, damage, stem pests, Ips typographus L.