Effectiveness of biochar on degraded irrigated soils in Southeast Kazakhstan
Doszhanova A. Ospanbayev Z.O. Sembayeva А.S. Bekbauov М.D. Kazkeyev D.T. Myrzabek K.A.
2025University of Guilan
Caspian Journal of Environmental Sciences
2025#23Issue 11 - 11 pp.
The article reports on field studies investigating the impact of different doses of birch biochar on the agro-physical and agrochemical properties of degraded irrigated soils in the Akdalinsky irrigation massif in Southeast Kazakhstan. Applying biochar at rates of 15-20 ton ha-1 as part of the primary soil treatment enhances soil bulk density. It increases the proportion of agriculturally valuable and water-stable aggregates in the plow layer. Notable improvements were observed in the content of labile humus and available phosphorus. These enhancements in soil properties lead to increased productivity in rice crop rotations due to both the immediate and residual effects of biochar application under moldboard plowing. Rice and spring wheat yields rise mainly due to improved tillering, while soybean yields benefit from increased pod formation.
Biochar , Crop yields , Irrigated agriculture , Salinity , Soil fertility
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Kazakh National Agrarian Research University, Almaty, Kazakhstan
Kazakh Research Institute of Agriculture and Plant Growing, Almalybak, Kazakhstan
Kazakh National Agrarian Research University
Kazakh Research Institute of Agriculture and Plant Growing
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