Abstract
This paper defines the types of elm trees pests in the Khorezm province in Uzbekistan, carries out their systematic analysis, and also determines the degree of their occurrence, as well as their natural types of enemies. The main phytophagous pests of elm trees in the Khorezm province belong to 4 genera and 14 species from 8 families. The vast majority of these pest species have been identified as Coleoptera pests. Pests were found to be mainly species that infect the body part of elm trees. In addition, 10 species of wild and parasitic entomophagous species have been identified as natural enemies. These species are phytophagous during the growing season and are important in managing their quantity.
Highlights
Elm trees belonging to the family Ulmaceae are a species that is widely used as ornamental and forest trees around the world and are resistant to various external factors
Samples were collected from all the pests encountered in the elm tree and their species were systematically analyzed under laboratory conditions
Samples were collected from elm leaf pests, all samples were studied during the growing season, the amount of damage to trees, the period of damage to trees, its entomophagous species
Summary
Elm trees belonging to the family Ulmaceae are a species that is widely used as ornamental and forest trees around the world and are resistant to various external factors. According to A.V.Gurudzinskaya, in the 19th-20th centuries, many trees belonging to the elm family grew in the Murgab River basin [1, 2]. According to V.P.Goloskokov, a total of 12 species of elm trees were introduced to Central Asia [2]. In the 30s of the 20th century the U.laevis type was introduced to Uzbekistan. A. Qayimov [1] conducted a selection of representatives of the elm trees resistant to Dutch disease. The main purpose of this selection work was to create disease-resistant elm varieties
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