Assessment of damage caused by leaf-beating insects to plantings in the Lower Volga region

Abstract

In forest plantations located in the plantations of the Lower Volga region, outbreaks of mass reproduction of many forest insects often occur, causing weakening and drying out of woody plants over large areas. It has been revealed that pests are capable of causing significant environmental and economic damage through their damage and reducing the environmental protection and environment-forming properties of plantings. Defoliation of crowns leads to loss of tree growth, which ultimately affects the quality and quantity of the resulting wood. It has been established that of the many species of dendrophilous phytophages, the most dangerous are leaf-eaters, among which the predominant gypsy moth (Porthetria dispar L.), green oak budworm (Tortrix viridana L.), lacewing (Euproctis chrysorroea L.), and ringed cocoon moth (Malacosoma neustria) are the most dangerous. L.), winter moth (Operophthora brumata L.).