Evaluation of fertility of irrigated soils in Uzbekistan

¹ Institute of Soil Science and Agrochemical Research, Tashkent, 100095, Uzbekistan
² Tashkent State Agrarian University, Tashkent, 100140, Uzbekistan

^* Corresponding author: gulchekhra-25@mail.ru

Abstract

The article examines the current productivity status of irrigated soils, encompassing aspects such as mechanical composition, agrochemical properties, salinity levels, and soil quality evaluation. The study highlights that the prevailing condition of the researched irrigated soils primarily comprises heavy sand texture. These soils exhibit a deficiency in humus content, rendering them low in organic matter. Additionally, they are characterized by a notable scarcity of mobile phosphorus and a correspondingly low content of exchangeable potassium. The research further categorizes the soils under investigation into three distinct cadastral groups based on their quality attributes. Through this classification, a comprehensive assessment of the soils’ varying characteristics is achieved. Moreover, the study quantifies the average credit score of these soils, indicating their overall quality level, which was found to be 55 points on average. The findings underscore the significance of understanding the intricate interplay between soil characteristics and agricultural productivity. This analysis provides valuable insights for optimizing soil management practices, ultimately contributing to enhanced agricultural output within the studied area.