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<p>Globally, 1257 Mha land area deteriorated and degrading due to excess salt accumulation in the soil profile. Reclamation of salt affected soils (SAS), particularly in the agricultural landscapes, is essential to achieve United Nations Sustainable Development Goal and restoration of 350 Mha degraded land by 2030. Therefore, identification nature-based feasible techniques are essential to accomplish the restoration goal. In direction, <i>Prosopis pallida</i> was introduced on saline-sodic Vertisols (<i>SSV</i>) and evaluated for its biomass production, changes that brings in soil chemical properties and recovery of understory vegetation. <i>P. pallida</i> established on <i>SSV</i> with &gt; 90% survivability and produced 24 and 35&#xa0;kg tree<sup>−1</sup>aboveground biomass (<i>AGB</i>) in high and low density stands, respectively. The <i>AGB</i> accumulation in high-density stand was 24 t ha<sup>−1</sup>, that can fetch direct economic benefit of ₹ 9000&#xa0;ha<sup>−1</sup>&#xa0;yr<sup>−1</sup>. Chemical properties of <i>SSV</i> significantly improved over six years. Mean ECe reduced from 6.16 to 3.78 dS m<sup>−1</sup>, mean ESP from 57 to 49% and mean SAR from 23.3 to 8.0 and soil pH increased from 8.1 to 8.3. Exchangeable sodium significantly reduced and an average of five-fold reduction in sodium was recorded. Similarly, ~ three-fold and ~ four times reduction in soil exchangeable calcium (Ca) and exchangeable magnesium (Mg) was observed, respectively. Further, appearance of herbs, shrubs and tree regeneration, indicates microhabitat improvement and initiation of plant succession. Thus, <i>P. pallida</i> stand was effective in altering soil properties of the <i>SSV</i> and can be identified as a tree for re-habilitation of <i>SSV</i> in the semi-arid tropics (SAT).</p>

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Performance of Prosopis pallida on saline sodic Vertisols: as a nature based low-cost phyto-rehabilitation technique in SAT region

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月28日

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  • M. N. Ramesha,
  • A. Raizada,
  • S. L. Patil,
  • M. Prabhavathi,
  • H. Biswas,
  • P. Ratha Krishnan

摘要

Globally, 1257 Mha land area deteriorated and degrading due to excess salt accumulation in the soil profile. Reclamation of salt affected soils (SAS), particularly in the agricultural landscapes, is essential to achieve United Nations Sustainable Development Goal and restoration of 350 Mha degraded land by 2030. Therefore, identification nature-based feasible techniques are essential to accomplish the restoration goal. In direction, Prosopis pallida was introduced on saline-sodic Vertisols (SSV) and evaluated for its biomass production, changes that brings in soil chemical properties and recovery of understory vegetation. P. pallida established on SSV with > 90% survivability and produced 24 and 35 kg tree−1aboveground biomass (AGB) in high and low density stands, respectively. The AGB accumulation in high-density stand was 24 t ha−1, that can fetch direct economic benefit of ₹ 9000 ha−1 yr−1. Chemical properties of SSV significantly improved over six years. Mean ECe reduced from 6.16 to 3.78 dS m−1, mean ESP from 57 to 49% and mean SAR from 23.3 to 8.0 and soil pH increased from 8.1 to 8.3. Exchangeable sodium significantly reduced and an average of five-fold reduction in sodium was recorded. Similarly, ~ three-fold and ~ four times reduction in soil exchangeable calcium (Ca) and exchangeable magnesium (Mg) was observed, respectively. Further, appearance of herbs, shrubs and tree regeneration, indicates microhabitat improvement and initiation of plant succession. Thus, P. pallida stand was effective in altering soil properties of the SSV and can be identified as a tree for re-habilitation of SSV in the semi-arid tropics (SAT).