BIOCHEMICAL PROCESSES IN GYPSIFEROUS SALINE SOILS: THE RELATIONSHIP BETWEEN GYPSUM CONTENT AND THE ACTIVITIES OF UREASE AND PHOSPHATASE ENZYMES

• Abdullayeva Kh.

  Researcher Department of Soil, National University of Uzbekistan named after Mirzo Ulugbek, Tashkent, Uzbekistan

  Author

• Makhkamova D.

  Associate Professor, Department of Soil, National University of Uzbekistan named after Mirzo Ulugbek, Tashkent, Uzbekistan

  Author

• Isxoqova Sh.

  Associate Professor, Department of Soil, National University of Uzbekistan named after Mirzo Ulugbek, Tashkent, Uzbekistan

  Author

This study aims to assess the changes in urease and phosphatase activities under a gradient of gypsum content in irrigated gypsiferous soils in the Zarbdor district of Jizzak region. Soil samples were collected from soil profiles with different degrees of gypsum content at depths of 0–15 and 15–30 cm. The gypsum content in the soil was determined using the B.P. Machigin method, while urease and phosphatase activities were measured under laboratory conditions using generally accepted standard biochemical methods. The results showed that increasing gypsum content in the soil was accompanied by a consistent decrease in the activities of both urease and phosphatase. The obtained data confirm that these enzymes can be reliably used as bioindicators for assessing the biological condition of irrigated gypsiferous soils and the degree of development of soil degradation processes.

• pdf

This work is licensed under a Creative Commons Attribution 4.0 International License.