Range of main species of phytophages and entomophages of cotton agrobiocenosis in lower reaches of the Zarafshan river

B Fayzullaev,O Mirzamurodov

doi:10.1051/e3sconf/202126501032

Abstract

Numerous arthropods have adapted to live in various biocenosis in the process of evolutionary transformation, especially under the influence of anthropogenic pressure, in particular cotton, which is widely distributed in Uzbekistan, especially in the lower reaches of the Zarafshan river. Among them there is a large group of phytophages, which causes substantial harm to cotton. It is also home to predatory and parasitic insects, entomophages, which are their effective regulators. The long-term impact of the anthropic factor on the complex of phytophages and entomophages in cotton agrobiocenosis could not but affect their vital activity. Meanwhile, previous studies did not fully open the nature of interaction of individual groups of arthropod animals and did not take into account the changes that occurred in the transformed natural environment. The aim of the research is to study the species composition of arthropods, to determine the main species of phytophages and entomophages, their ecology and biological principles for regulating their numbers in cotton agrobiocenosis.

Highlights

Numerous arthropods in the process of evolutionary transformation, especially under the influence of anthropopression, have adapted to living in various biocenosis, in particular cotton, which is widely represented in Uzbekistan, especially in the lower reaches of the Zarafshan river
The mentioned provides a basis for studying the ecology features of the main species of phytophages and entomophages in cotton agrobiocenosis in the lower reaches of the Zarafshan river, which play a certain biological role under these conditions
In order to identify the population of cotton by the main phytophages and entomophages, to study the seasonal dynamics of the number of aphids, spider mites and their entomophages occurring in agrobiocenosis from the emergence of cotton seedlings to harvesting, we examined 20 plant samples every five days on plots of up to 5 hectares along the field diagonal

Summary

Introduction

Numerous arthropods in the process of evolutionary transformation, especially under the influence of anthropopression, have adapted to living in various biocenosis, in particular cotton, which is widely represented in Uzbekistan, especially in the lower reaches of the Zarafshan river. Previous studies did not fully disclose the nature of the interaction of individual groups of arthropod animals and did not take into account the changes that occurred in the transformed natural environment [2]. The mentioned provides a basis for studying the ecology features of the main species of phytophages and entomophages in cotton agrobiocenosis in the lower reaches of the Zarafshan river, which play a certain biological role under these conditions. The aim of the research is to study the species composition of arthropods, to determine the main species of phytophages and entomophages, their ecology and biological principles for regulating their numbers in cotton agrobiocenosis

Material and research methods

Results

Findings