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Effect of Biochar, Hydrogel and Soil Liming on Nutrient Leaching in a Coarse-Textured Soil

Author

Listed:
  • Joba Purkaystha

    (Department of Bioresource Engineering, Macdonald Campus of McGill University, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada)

  • Shiv O. Prasher

    (Department of Bioresource Engineering, Macdonald Campus of McGill University, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada)

  • Muhammad T. Afzal

    (Department of Mechanical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada)

  • Jaskaran Dhiman

    (Department of Bioresource Engineering, Macdonald Campus of McGill University, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada)

  • Christopher Nzediegwu

    (Department of Bioresource Engineering, Macdonald Campus of McGill University, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada)

Abstract

Nutrient leaching from agricultural fields can degrade soil fertility and groundwater quality, especially in coarse-textured soils. Use of biochar, lime, and hydrogel in these soils can enhance nutrient and water use efficiencies, thus reducing water pollution, and aiding in sustainable agricultural production. Amending soils with biochar, lime, hydrogel, or their combinations may reduce leaching, but the effects of single versus combined amendments remain unclear. A three-year pot experiment under field conditions was conducted on a loamy sand soil to enhance water and nutrient retention capacity of this soil. Soil samples were mixed with all possible combinations of 1% biochar (B), l% lime (L), and 0.5% hydrogel (H), i.e., BL, BH, HL, and BHL. The amendments were arranged in a randomized complete block design with four blocks. The results showed that compared to control, amendments B, H, BH, HL, and BHL significantly decreased ( p ≤ 0.05) nitrate-N leaching per unit biomass by 58–88%, and L, H, BH, BHL significantly reduced ( p ≤ 0.05) orthophosphate-P leaching per unit biomass by 34–98%. Compared to the control, the marketable yield significantly increased ( p ≤ 0.05) by 24–38% under BH, HL, and BHL in 2019, and by 17–52% under amendments B, L, H, BL, BH, HL, and BHL in 2020. These results were not seen in the first year due to soil conditioning for biochar and lime. Amendments H, BH, HL, and BHL show potential to improve water use efficiency, reduce nutrient leaching, and support sustainable crop production.

Suggested Citation

  • Joba Purkaystha & Shiv O. Prasher & Muhammad T. Afzal & Jaskaran Dhiman & Christopher Nzediegwu, 2025. "Effect of Biochar, Hydrogel and Soil Liming on Nutrient Leaching in a Coarse-Textured Soil," Sustainability, MDPI, vol. 17(12), pages 1-31, June.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:12:p:5396-:d:1676737
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    References listed on IDEAS

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    1. Mehnaz Mosharrof & Md. Kamal Uddin & Muhammad Firdaus Sulaiman & Shamim Mia & Shordar M. Shamsuzzaman & Ahmad Numery Ashfaqul Haque, 2021. "Combined Application of Rice Husk Biochar and Lime Increases Phosphorus Availability and Maize Yield in an Acidic Soil," Agriculture, MDPI, vol. 11(8), pages 1-21, August.
    2. Dafeng Hui & Chih-Li Yu & Qi Deng & Priya Saini & Kenya Collins & Jason De Koff, 2018. "Weak Effects of Biochar and Nitrogen Fertilization on Switchgrass Photosynthesis, Biomass, and Soil Respiration," Agriculture, MDPI, vol. 8(9), pages 1-12, September.
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    1. Mehnaz Mosharrof & Md. Kamal Uddin & Shamim Mia & Muhammad Firdaus Sulaiman & Shordar M. Shamsuzzaman & Ahmad Numery Ashfaqul Haque, 2022. "Influence of Rice Husk Biochar and Lime in Reducing Phosphorus Application Rate in Acid Soil: A Field Trial with Maize," Sustainability, MDPI, vol. 14(12), pages 1-16, June.

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