Nurzikhan SEİTKALİ, Askhat NAUSHABAYEV, Shynar MAZKİRAT, Tursunay VASSİLİNA

Assessing the efficacy of ameliorants on saline-sodic soils: Laboratory insights for reclamation strategies

This study presents the combined findings of laboratory experiments conducted to assess the efficacy of various ameliorants on saline-sodic soils in the foothill plain of Ile Alatau in the Northern Tianshan region. The investigation focused on the influence of phosphogypsum, elemental sulfur, nano sulfur, and sulfuric acid on the ionic composition of the soil solution and their impact on the soil-absorbing complex. Different doses of these ameliorants were applied to saline-sodic soil samples, and their incubation period was observed. The analysis of the aqueous extract of the soil emphasized the presence of bicarbonate, carbonate, sulfate, calcium, and sodium ions. The results revealed that sulfuric acid was the most effective ameliorant, rapidly neutralizing extreme alkalinity, reducing bicarbonate and carbonate ion content, and increasing sulfate and sodium ion concentrations. Elemental sulfur ranked second in effectiveness, significantly decreasing bicarbonate and carbonate ions and increasing sulfate and sodium ions. Phosphogypsum exhibited the lowest effectiveness, causing reductions in bicarbonate and carbonate ions and modest increases in sulfate and calcium ions. The study demonstrated that the introduction of phosphogypsum led to an increase in calcium and sulfate ions in the soil solution, while elemental sulfur and sulfuric acid significantly increased the sulfate ion content. Sulfuric acid exhibited the highest efficacy among the ameliorants, completely neutralizing normal carbonates and reducing alkalinity in the soil solution. The formation of subsoil gypsum through the interaction of sulfuric acid with calcium carbonates facilitated the displacement of sodium from the soil-absorbing complex. These findings contribute to our understanding of the processes involved in the amelioration of saline-sodic soils and provide insights into effective soil management practices. They serve as a theoretical basis for developing strategies for the reclamation of such soils worldwide. The research highlights sulfuric acid as the most effective ameliorant for saline-sodic soils, resulting in a significant rearrangement of the soil's ionic composition. Further research and field studies are necessary to validate and refine these laboratory findings for practical applications in soil improvement methods.

Keywords:

Saline-sodic soils, ameliorants, soil reclamation, Soil management,

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Amezketa, E., Aragüés, R., Gazol, R., 2005. Efficiency of sulfuric acid, mined gypsum, and two gypsum by-products in soil crusting prevention and sodic soil reclamation. Agronomy Journal 97(3): 983–989.
El hasini, S., Halima, I.O., Azzouzi, M.E., Douaik, A., Azim, K., Zouahri, A., 2019. Organic and inorganic remediation of soils affected by salinity in the sebkha of sed el mesjoune – marrakech (Morocco). Soil and Tillage Research 193: 153-160.
Funakawa, S., Suzuki, R., Karbozova, E., Kosaki, T., Ishida, N., 2000. Salt-affected soils under rice-based irrigation agriculture in Southern Kazakhstan. Geoderma 97(1-2): 61–85.
Kussainova, M., Spaeth, K., Zhaparkulova, E., 2020. Efficiency of using the rangeland hydrology and erosion model for assessing the degradation of pastures and forage lands in Aydarly, Kazakhstan. Eurasian Journal of Soil Science 9(2): 186 - 193.
Laiskhanov, S.U., Otarov, A., Savin, I.Y., Tanirbergenov, S.I., Mamutov, Z.U., Duisekov, S.N., Zhogolev, A., 2016. Dynamics of soil salinity in irrigation areas in South Kazakhstan. Polish Journal of Environmental Studies 25(6): 2469–2476.
Liu, W., Ma, L., Smanov, Z., Samarkhanov, K., Abuduwaili, J., 2022. Clarifying soil texture and salinity using local spatial statistics (Getis-Ord Gi* and Moran’s I) in Kazakh–Uzbekistan Border Area, Central Asia. Agronomy 12: 332.
Ma, L., Abuduwaili, J., Smanov, Z., Ge, Y., Samarkhanov, K., Saparov, G., Issanova, G., 2019 Spatial and vertical variations and heavy metal enrichments in irrigated soils of the Syr Darya River watershed, Aral Sea Basin, Kazakhstan. International Journal of Environmental Research and Public Health 16(22):4398.
Otarov, A., 2014. Concentration of heavy metals in irrigated soils in Southern Kazakhstan. In: Novel measurement and assessment tools for monitoring and management of land and water resources in agricultural landscapes of Central Asia. Mueller, L., Saparov, A., Lischeid, G. (Eds.). Environmental Science and Engineering. Springer, Cham. pp 641–652.
Pachikin, K., Erokhina, O., Funakawa, S., 2014. Soils of Kazakhstan, their distribution and mapping. In: Novel measurement and assessment tools for monitoring and management of land and water resources in agricultural landscapes of Central Asia. Mueller, L., Saparov, A., Lischeid, G. (Eds.). Environmental Science and Engineering. Springer, Cham. pp 519–533.
Rengasamy, P., 2002. Transient salinity and subsoil constraints to dryland farming in Australian sodic soils: an overview. Australian Journal of Experimental Agriculture 42(3): 351–361.
Rengasamy, P., 2006 World salinization with emphasis on Australia. Journal of Experimental Botany 57(5): 1017–1023.
Saparov, A., 2014. Soil resources of the Republic of Kazakhstan: Current status, problems and solutions. In: Novel measurement and assessment tools for monitoring and management of land and water resources in agricultural landscapes of Central Asia. Mueller, L., Saparov, A., Lischeid, G. (Eds.). Environmental Science and Engineering. Springer, Cham. pp 61–73.
Shaygan, M., Baumgartl, T., 2022. Reclamation of Salt-Affected Land: A Review. Soil Systems 6(3): 61.
Suska-Malawska, M., Sulwiński, M., Wilk, M., Otarov, A., Metrak, M., 2019. Potential eolian dust contribution to accumulation of selected heavy metals and rare earth elements in the aboveground biomass of Tamarix spp. from saline soils in Kazakhstan. Environmental Monitoring and Assessment 191: 57.
Suska-Malawska, M., Vyrakhamanova, A., Ibraeva, M., Poshanov, M., Sulwiński, M., Toderich, K., Metrak, M., 2022. Spatial and in-depth distribution of soil salinity and heavy metals (Pb, Zn, Cd, Ni, Cu) in arable irrigated soils in Southern Kazakhstan. Agronomy 12: 1207.
USDA, 2014. Soil Survey Field and Laboratory Methods Manual. Soil Survey Investigations Report No. 51, Version 2. United States Department of Agriculture (USDA), Natural Resources Conservation Service, Kellogg Soil Survey Laboratory. 457p. Available at [Access date: 04.11.2022]: https://www.nrcs.usda.gov/sites/default/files/2023-01/SSIR51.pdf
USDA, 2022. Kellogg Soil Survey Laboratory Methods Manual. Soil Survey Investigations Report No. 42, Version 6.0. Part 1: Current Methods. Kellogg Soil Survey Laboratory, National Soil Survey Center, Natural Resources Conservation Service, United States Department of Agriculture (USDA). 796p. Available at [Access date: 04.11.2022]: https://www.nrcs.usda.gov/sites/default/files/2022-10/SSIR42-v6-pt1.pdf
Yertayeva, Z. , Kızılkaya, R., Kaldybayev, S., Seitkali, N., Abdraimova, N., Zhamangarayeva, A., 2019. Changes in biological soil quality indicators under saline soil condition after amelioration with alfalfa (Medicago sativa L.) cultivation in meadow Solonchak. Eurasian Journal of Soil Science 8 (3): 189-195.
Zhang, W., Ma, L., Abuduwaili, J., Ge, Y., Issanova, G., Saparov, G., 2019. Hydrochemical characteristics and irrigation suitability of surface water in the Syr Darya River, Kazakhstan. Environmental Monitoring and Assessment 191: 572.