CONTROL EXPERIENCE AGAINST WESTERN (CALIFORNIA) FLOWER TRIPS IN THE YAKUTSK BOTANICAL GARDEN GREENHOUSE

The purpose of the study is to control Western (California) flower thrips (hereinafter referred to as WFT) (Frankliniella occidentalis) in the greenhouse of the Botanical Garden of the Institute of Biological Problems of the Permafrost of the Siberian Branch of the Russian Academy of Sciences. Objectives: accounting for the number and study of the food preference of this pest in a greenhouse; development of a method for effective control and complete destruction of thrips in the greenhouse. The object of the study is the order of thrips – Bahromchatokrylye (Thysanoptera) suborder Terebrantia fam. Thripidae genus Frankliniella species F. occidentalis (Pergande, 1895). The counts were carried out from October 2018 to February 2019, observations continue to the present. The collection of thrips was carried out according to the generally accepted method. Blue glue traps, which are vertically arranged sheets of film or paper coated with special glue, were used to detect and account for CCT. The identification of fringed-winged birds was carried out according to Meshcheryakov and Strassen. The account of the number and food preference of this pest in the greenhouse of the Botanical Garden is described. The method of struggle and destruction of thrips in the greenhouse is described in detail. It was revealed that out of 379 plant species (165 genera, 71 families) of tropical and subtropical plants growing in the greenhouse, the most preferred plants are Saintpaulia ionantha, Clerodendrum thomsoniae Pachystachys lutea, Kalanchoe blossfeldiana. The pest feeds on young parts of plants, pollen and buds. The high temperature and dryness of the air during the winter months contribute to the rapid reproduction and spread of thrips throughout the greenhouse. To reduce the number and complete destruction of WFT, the effective concentration of the preparation Vertimek is 10 ml of the preparation per 10 liters of water with a four-fold complete treatment of all plants in the greenhouse. To prevent the penetration of WFT into the greenhouses of the Botanical Gardens, newly arrived ornamental plants should be kept in special isolated rooms (in quarantine) with a separate entrance and a well-insulated warm passage to the greenhouse for at least one year.