Leaching Requirements to Prevent Soil Salinization

Kara, Tekin; Willardson, L. S.

doi:10.3923/jas.2006.1481.1489

Cited by 11 publications

(9 citation statements)

References 19 publications

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“…In foreign literature, much attention is paid to salinity management during crop irrigation. At the same time, the main factor is often the quality of irrigation water, and regulation of the salt regime is considered as the calculation and implementation of the leaching fraction of water supply, in excess of the needs of plants of a certain crop (LF-Leaching fraction) during vegetation irrigation [3][4][5][6][7][8][9][10]. In this case, drainage must be ensured.…”

Section: Review Of Foreign Approaches To Maintaining the Water-salt R...mentioning

confidence: 99%

“…The same sources, in order to successfully leach the soil from salts, mention the importance of the rate of water infiltration into the soil, which should not be too low or too high. Also, as an option, the possibility of leaching the soil with precipitation [8][9][10] and the advisability of special loosening of the soil to enhance infiltration are mentioned. Chemical amelioration, including the use of acids, is also described.…”

Section: Review Of Foreign Approaches To Maintaining the Water-salt R...mentioning

confidence: 99%

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Assessment of the effectiveness of methods for reducing soil salinization based on experimental data for Uzbekistan

Shirokova,

Paluashova,

Kodirov

et al. 2024

E3S Web Conf.

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The article briefly analyzes foreign approaches to regulating the salt regime of soils and compares them with leaching methods used in Uzbekistan. Based on experimental data from the authors’ field studies, a comparison was made of the effectiveness of check leaching and alternative methods of soil desalinization for the conditions of Uzbekistan. The purpose of this study is to find a method for amelioration of saline soils with economical use of water, taking into account the scarcity of water resources. The materials can serve as a guide for choosing technology for regulating the salt regime of the kidney in various conditions and situations.

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Section: Review Of Foreign Approaches To Maintaining the Water-salt R...mentioning

confidence: 99%

Section: Review Of Foreign Approaches To Maintaining the Water-salt R...mentioning

confidence: 99%

Assessment of the effectiveness of methods for reducing soil salinization based on experimental data for Uzbekistan

Shirokova,

Paluashova,

Kodirov

et al. 2024

E3S Web Conf.

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“…Techniques to improve saline soil have been developed. These include improving soil drainage [14], the leaching of chemicals [15,16], and the breeding of salt-tolerant plant varieties [17]. However, shortcomings inevitably exist in each of these methods.…”

Section: Introductionmentioning

confidence: 99%

“…Drainage contributes to lowering the groundwater level but at a high cost [18,19]. Leaching with fresh water is conducive to transferring salt from the plant root zone to soil even deeper down but is impractical in areas where fresh water is scarce [16]. Chemical agents can react with certain types of salts and remove them from soils, but this method is costly and may cause other negative environmental consequences [20].…”

Section: Introductionmentioning

confidence: 99%

Amendment of Saline–Alkaline Soil with Flue-Gas Desulfurization Gypsum in the Yinchuan Plain, Northwest China

Wang

Zhao

et al. 2023

Sustainability

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The effective and safe use of FGD gypsum in agricultural land is still debated in some countries even though its effectiveness in soil management has been reported in many studies. Thus, the changes in the levels of soil salinity, alkalinity, crop yield, and other physicochemical properties in different soil types and crops after reclamation and planting with FGD gypsum over four years are evaluated in this paper. The main aim of this paper is to review the effects of six treatment technologies in addressing soil salinity and sodicity and crop production in soils, with a focus on the basic theory, key technologies, and industrialized applications. This paper also shows that soil conditions can be improved and crop yields can be increased by using FGD alone or in combination with humic acid or fertilizer. FGD gypsum plus K–Zn–Mn fertilizer increased the yield of rice by 135%. In alkaline, salinized, and secondary salinized soils, FGD gypsum combined with organic fertilizer or organic plus chemical fertilizer increased the yield of rice by 21.2% and 60.4%, the yield of sunflower by 2.4% and 23.6%, and the yield of medlar by 18.81% and 20.78%, respectively. The application of FGD gypsum also increased the salt tolerance of salt-tolerant plants. Combined with drainage, laser field levelling and tillage decreased soil salinity by more than 63.76% and increased the yield of oil sunflower by up to 96.96%. This study provides convincing evidence of the benefits of the application of the six treatments to reclaim saline–alkali soils. It is suggested that comprehensive measures should be taken to improve saline–alkaline soil.

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“…According to the theory of regulation of the soil salt regime, a fundamental concept is the reducing soil salinity during the growing season, for a specific crop, according to the principle of leaching irrigation regime (LR-leaching requirement LF -leaching fraction), taking into account the salinity used for irrigation water [7]. At the same time, drainage must be necessarily provided [4][5][6][7][8]. In the same sources, for successful washing of the soil from salts, the value of the rate of water infiltration into the soil is important to consider, which should not be too low but neither be too high.…”

Section: Introductionmentioning

confidence: 99%

Desalinization of degraded soils by atmospheric precipitation and Biosolvent for saving water resources

Shirokova

Paluashova

Sadiev

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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In the Syrdarya region of Uzbekistan, the influence of atmospheric precipitation on changes in the degree of salinity and chemical composition of the upper 30 cm soil layer was studied. Experiment options: 1 - loosening the soil to a depth of 70 cm, 2 - loosening, followed by soil treatment with preparation containing polymaleic acid. A decrease in the degree of soil salinity by 7 - 8 dS/m has been established with the help of only 302 mm of precipitation, without water wasted for leaching. The decrease in soil salinity was: according to EU, 56% - in option 2, and 52% - in option 1. According to TDS, the salinity reduction was: - 61 and 52%, according to SO “4. - 58 and 47%. The content of calcium in the variant with the use of Biosolvent decreased by 48%, and in the control variant, it increased by 15%. It has been estimated that with a decrease in salinity from 16 to 8 dS/m, a possible increase in the yield of a salt-tolerant barley crop by 1.6 t/ha is possible. Taking into account the costs of loosening and tillage with the preparation, the net income of the farmer can be $480/ha.

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Leaching Requirements to Prevent Soil Salinization

Cited by 11 publications

References 19 publications

Assessment of the effectiveness of methods for reducing soil salinization based on experimental data for Uzbekistan

Assessment of the effectiveness of methods for reducing soil salinization based on experimental data for Uzbekistan

Amendment of Saline–Alkaline Soil with Flue-Gas Desulfurization Gypsum in the Yinchuan Plain, Northwest China

Desalinization of degraded soils by atmospheric precipitation and Biosolvent for saving water resources

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