The content and composition of humus of chestnut saline soils of various agricultural uses in the conditions of the dry steppe of the Western Manych valleyL. P. Iljina, K. S. Sushko and V. Yu. ShmatkoE3S Web Conf., 623 (2025) 02015DOI: https://doi.org/10.1051/e3sconf/202562302015