Group-fractional composition of humus in dry aggregates of weakly saline grass-meadow soils

Tashkent State Agrarian University, Tashkent, 100140, Uzbekistan

^* Corresponding author: nshadiyeva@gmail.com

Abstract

The study focused on analyzing changes in the group-fraction composition of humus in dry aggregates of weakly saline grass-meadow soils. The research aimed to understand the dynamics of humus composition and content in these soils, which are crucial for soil fertility and ecosystem health. The analysis revealed significant changes in the group and fractional composition of humus in the dry aggregates of the studied soils. These changes are indicative of the humus status and can provide insights into the overall soil health and fertility. Based on the findings, it was concluded that the soils belong to the fulvate-humic and fulvate type based on the type of humus present. This classification indicates the predominance of fulvic acids and humic acids in the humus composition, which play vital roles in soil nutrient cycling, microbial activity, and overall soil structure. The results of this study contribute to a better understanding of the humus dynamics in grass-meadow soils, particularly in relation to saline conditions. This knowledge is essential for developing sustainable soil management practices that can improve soil fertility, enhance crop productivity, and maintain ecosystem health in saline-affected agricultural lands. Further research in this area could focus on the long-term effects of soil management practices, such as organic matter addition and irrigation strategies, on the humus composition and overall soil health of saline-affected grass-meadow soils.