Assessment of the condition of horse chestnut (Aesculus hippocastanum L.) plantings at some landscaping sites in Orel

Nowadays, the leading factors of deterioration of woody plants in natural and artificial ecosystems are pests and pathogens. Monitoring and control of populations of known pest species and pathogens is a relevant task of modern ornamental plant growing. The aim of the work was to assess the condition of plantings from Aesculus hippocastanum L. on the objects of landscape architecture of the city of Orel for the defeat of the chestnut miner Cameraria ohridella Deshka et Dimic. Plantings of A. hippocastanum L. were examined on four objects of landscape architecture of the Sovetsky district of Orel: arboretum of the Orel SAU, Victory Boulevard, L.N. Gurtyev Square, City Park of Culture and Recreation. The plantings were assessed visually, according to the condition of the crown and the damage to the leaves of horse chestnut with a periodicity of 17 days. As a result of the study, it is shown that all the plantings are susceptible to chestnut miner lesions. Most of the diseased tree plantations were found in the City Park of Culture and Recreation, to a lesser extent - in Victory Boulevard, where preventive stem injections were carried out. All the landscaping facilities proved that repeatedly damaged woody plants bloom in spring with a delay, the growth of the aboveground mass as well as the size of leaves, the abundance and intensity of flowering, the size of fruits and seed nuts in them decrease. Systematic pruning of species, stem injections, replacement of species with resistant species and varieties such as A. Carnea, A. glabra, A. indica, A. Pavia are recommended as the main measures to protect plants from the chestnut mining moth. It is also recommended for the urban conditions.