Efficiency of using the rangeland hydrology and erosion model for assessing the degradation of pastures and forage lands in Aydarly, Kazakhstan

Kussainova, Maira; Spaeth, Kenneth E.; Zhaparkulova, Ermekkul

doi:10.18393/ejss.708898

Cited by 5 publications

(3 citation statements)

References 5 publications

(2 reference statements)

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“…In Kazakhstan, where fertile lands are interspersed with areas affected by soil salinity and sodicity, the need for effective reclamation strategies is paramount. In the foothill plains of southeast Kazakhstan, characterized by meadow, meadow-gray soil, and meadow-chestnut soils, substantial yield losses of 15% to 45% due to soda salinity have been observed (Funakawa et al, 2000;Saparov, 2014;Pachikin et al, 2014;Otarov, 2014;Laiskhanov et al, 2016;Suska-Malawska et al, 2019Zhang et al, 2019;Ma et al, 2019;Yertayeva et al, 2019;Kussainova et al, 2020;Liu et al, 2022). Efforts to address soil salinity and sodicity in Kazakhstan have focused on the application of ameliorative techniques such as phosphogypsum, elemental sulfur, and sulfuric acid.…”

Section: Introductionmentioning

confidence: 99%

Effective strategies for reclaiming soda-saline soils: Field experimentation and practical applications in Southeast Kazakhstan

Naushabayev,

Seitkali,

Karayeva

et al. 2024

EJSS

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Soda-saline soils pose significant challenges to agricultural productivity, particularly in regions like the foothill plain of the Ili Alatau in southeast Kazakhstan. In this study, we examined the effectiveness of different ameliorants, including phosphogypsum, elemental sulfur, and sulfuric acid, in reclaiming soda-saline soils and enhancing crop yields. The study was conducted under real climatic and production conditions at the "Amiran" LLP farm. Using a randomized complete block design, we assessed the impact of these ameliorants on soil composition and alfalfa yield over two cutting cycles. The experiment involved the application of phosphogypsum, elemental sulfur, and sulfuric acid to designated plots within the farm, each covering an area of 15m2. Soil samples were collected before and after treatment to assess changes in soil composition and salinity. Alfalfa, a resilient perennial crop, was selected for cultivation due to its tolerance to adverse soil conditions. Our findings reveal that all tested ameliorants successfully neutralized the toxic environment of soda-saline soils, resulting in improved soil conditions and increased crop productivity. Phosphogypsum treatment led to a reduction in bicarbonate and carbonate ions, an increase in sulfate ion concentration, and improved soil structure. Elemental sulfur incubation decreased bicarbonate and carbonate ions, further reducing absorbed sodium levels and enhancing soil fertility. Sulfuric acid treatment provided rapid results in reducing alkalinity and increasing sulfate ion concentration, leading to significant improvements in soil quality and crop yield. However, the reclamation of soda-saline solonetzes presented challenges related to soil heterogeneity and poor water permeability. To address these challenges, we recommend the implementation of mechanical destruction of the solonetz soil horizon and deep soil loosening, accompanied by the addition of ameliorants. In conclusion, our study demonstrates the potential of phosphogypsum, elemental sulfur, and sulfuric acid as effective ameliorants for reclaiming soda-saline soils and improving agricultural productivity in challenging environments. By adopting recommended reclamation strategies, farmers can overcome soil limitations and achieve sustainable crop production in regions affected by soda-saline soil degradation.

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Section: Introductionmentioning

confidence: 99%

Effective strategies for reclaiming soda-saline soils: Field experimentation and practical applications in Southeast Kazakhstan

Naushabayev,

Seitkali,

Karayeva

et al. 2024

EJSS

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“…Crop losses due to sodic salinity in these areas range from 15% to 45% (Funakawa et al, 2000;Saparov, 2014;Pachikin et al, 2014;Otarov, 2014;Laiskhanov et al, 2016;Suska-Malawska et al, 2019;Zhang et al, 2019;Ma et al, 2019;Yertayeva et al, 2019;Kussainova et al, 2020;Liu et al, 2022;Suska-Malawska et al, 2022). Peasant farms annually apply various agricultural practices, from plowing to harvesting, to address salinesodic soil patches.…”

Section: Introductionmentioning

confidence: 99%

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

SEİTKALİ,

NAUSHABAYEV,

MAZKİRAT

et al. 2023

EJSS

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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.

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“…According to our estimates, soils of rainfed lands are eroded to varying degrees on an area of more than 700 thousand ha. For this reason, determining the properties of rainfed soils formed in various soil and climatic conditions of the republic, preventing erosion processes that occur under the influence of factors limiting soil fertility, improving methods for assessing soil fertility, evaluating their quality and determining the degree of soil fertility are of great importance [3][4][5][6][7]. The mechanical composition of soils is one of the main indicators that determine the most important physical and physicochemical properties of soils, as well as their resistance to erosion.…”

Section: Introductionmentioning

confidence: 99%

Influence of erosion on the mechanical composition and physical properties of serozems on rainfed soils, Tashkent province, Uzbekistan

Juliev

Matyakubov

Khakberdiev

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The problem of soil protection from erosion is relevant for many countries in the arid zone of the world, including the territory of Uzbekistan. In the republic, the main arrays of crops are located on rainfed lands, where the crop is created only due to moisture in precipitation. The amount of porosity (duty cycle) of soils is determined mainly by specific and bulk mass, mechanical composition, and humus content. Porosity of soils decreases from unwashed soils to washed away and down the profile. In the arable horizons of unwashed rainfed soils, it is 52%, washed out - 47.49%. Deeper in the profile, in horizons transitional to soil, due to a sharp increase in density and a decrease in the humus content in all soils, regardless of erosion, Porosity sharply drops to 48-50%. Thus, with a small bulk mass, the overall porosity of rainfed typical serozems is generally satisfactory, since it provides good soil aeration and the use of precipitation, only on highly washed away soils the porosity decreases markedly and the absorption of precipitation is slightly worsened.

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Efficiency of using the rangeland hydrology and erosion model for assessing the degradation of pastures and forage lands in Aydarly, Kazakhstan

Cited by 5 publications

References 5 publications

Effective strategies for reclaiming soda-saline soils: Field experimentation and practical applications in Southeast Kazakhstan

Effective strategies for reclaiming soda-saline soils: Field experimentation and practical applications in Southeast Kazakhstan

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

Influence of erosion on the mechanical composition and physical properties of serozems on rainfed soils, Tashkent province, Uzbekistan

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