METHOD FOR CONTROLLING AMOUNT OF POPULATIONS OF CHERRY FRUIT MOTH

摘要

A method for controlling the amount of populations of the cherry fruit moth includes using techniques of biological control of pests, preserving natural populations of entomophages. At the beginning and in the period of mass egglaying of females of the moth double settling of species of the Trichogramma genus is carried out: in the first technique the species Trichogramma pintoi Voeg. is settled in an equivalent of 300 individuals per tree, in the second technique . dendrolimi Mats. in equivalent of 400 individuals/tree. In addition, in spring, in the period of reactivation of the moth, single settling of manyaged Trichogramma (. dendrolimi) is carried out in an equivalent of 350-400 individuals per tree, in the composition of a population of which 30-35% of individuals are at the stage of egg and larvae, the rest at the stage of pronymph and pupae. The populations of the Trichogramma prior to settling, in the the laboratory growing regime, the last two generations are kept at changing temperatures, at the stage of larva, propupa and pupa daytime a temperature is 21-24 °, at night 14-16 °.