Application of Inorganic Amendments to Improve Soil Fertility

Chauhan, Sunita; Kulshreshtha, Shweta

doi:10.1002/9781119644798.ch10

Cited by 1 publication

(2 citation statements)

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“…Furthermore, most organic amendments contain various nutrients, particularly nitrogen and phosphorus (Litardo et al, 2022), which can enhance the diversity of soil bacterial communities and the relative abundance of beneficial, salt‐tolerant microbial taxa, and reinforce interactions among microorganisms (X. Mao et al, 2022; Zhang et al, 2022). Inorganic amendments, on the other hand, consist primarily of mineral or artificially prepared compounds, such as gypsum, desulfurized gypsum, and aluminum sulfate (Chauhan & Kulshreshtha, 2021; Clark et al, 2001; M. Zhou et al, 2019). Although they typically lack organic carbon, they primarily function by amending the chemical properties of saline‐sodic soil through neutralization or ion balance adjustments (Nan et al, 2016; Qadir et al, 2001; Rasouli et al, 2013; Smaoui‐Jardak et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

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Ameliorating saline‐sodic soils: A global meta‐analysis of field studies on the influence of exogenous amendments on crop yield

Wang,

Ding,

Wang

et al. 2024

Land Degrad Dev

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As the demand for food continues to rise, soil salinization and sodification pose an increasingly pressing challenge. Currently, there is a knowledge gap regarding how to effectively improve saline‐sodic soils to support sustainable agricultural production, especially the lack of systematic analysis on the effects of different amendments at a global scale. To address this gap, this study aims to explore the feasibility of using exogenous amendments to ameliorate saline‐sodic soils, conducting a global‐scale meta‐analysis based on 685 data pairs from 70 published studies. Our results showed that applying amendments to saline‐sodic soils significantly reduced electrical conductivity of saturated paste extract (ECe) by 33.0% and exchangeable sodium percentage (ESP) by 44.6%, while simultaneously increasing crop yield by 50.7%. Heterogeneity analysis further unveiled significant variations (p < 0.05) in the overall effect size, driven by factors such as initial soil properties (salinity and ESP levels), amendment type, climate and practical management conditions (application dose and experimental duration). The categorical variable analysis showed that, compared to soils with other salinization levels, the application of amendments in severe salinization soils was most effective in reducing soil ECe and enhancing crop yield. Considering the goals of mitigating soil salinity, sodicity, and increasing crop yield, the study suggests the application of mixed‐type amendments in practical settings. It is noteworthy that while extremely high doses (greater than 40 t ha−1) effectively increased crop yield, they also posed a risk of salt accumulation. In conclusion, this research offers critical insights for sustainable agriculture, guiding future work on soil health and food security in the context of global environmental challenges.

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Section: Discussionmentioning

confidence: 99%

“…Mao et al, 2022;Zhang et al, 2022). Inorganic amendments, on the other hand, consist primarily of mineral or artificially prepared compounds, such as gypsum, desulfurized gypsum, and aluminum sulfate (Chauhan & Kulshreshtha, 2021;Clark et al, 2001;M. Zhou et al, 2019).…”

Section: Long-term Impacts Of Amendments and Sustainable Soil Managem...mentioning

confidence: 99%