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Influence of Acidified Biochar on CO 2 –C Efflux and Micronutrient Availability in an Alkaline Sandy Soil

Author

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  • Mutair A. Akanji

    (Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia)

  • Adel R. A. Usman

    (Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
    Department of Soils and Water, Faculty of Agriculture, Assiut University, Assiut 71526, Egypt)

  • Mohammad I. Al-Wabel

    (Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia)

Abstract

Biochar, an alkaline carbonaceous substance resulting from the thermal pyrolysis of biomass, reportedly enhances the micronutrient availability in acidic soils with little or no effect on alkaline soils. In this study, biochars were produced from poultry manure (PM) at 350 °C and 550 °C (BC350 and BC550 respectively). The acidified biochars (ABC350 and ABC550, respectively) were incorporated into an alkaline sandy soil, and their effects on the soil micronutrients (Cu, Fe, Mn and Zn) availability, and CO 2 –C efflux were investigated in a 30-day incubation study. The treatments (PM, BC350, BC550, ABC350, and ABC550) were administered in triplicate to 100 g soil at 0%, 1%, and 3% ( w / w ). Relative to the poultry manure treatment, acidification drastically reduced the pH of BC350 and BC550 by 3.13 and 4.28 units, respectively, and increased the micronutrient availability of the studied soil. Furthermore, the biochars (both non-acidified and acidified) reduced the CO 2 emission compared to that of the poultry manure treatment. After 1% treatment with BC550 and ABC550, the CO 2 emissions from the soil were 89.6% and 91.4% lower, respectively, than in the 1% poultry manure treatment. In summary, acidified biochar improved the micronutrient availability in alkaline soil, and when produced at higher temperature, can mitigate the CO 2 emissions of soil carbon sequestration.

Suggested Citation

  • Mutair A. Akanji & Adel R. A. Usman & Mohammad I. Al-Wabel, 2021. "Influence of Acidified Biochar on CO 2 –C Efflux and Micronutrient Availability in an Alkaline Sandy Soil," Sustainability, MDPI, vol. 13(9), pages 1-12, May.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:9:p:5196-:d:549754
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    References listed on IDEAS

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    1. Dominic Woolf & James E. Amonette & F. Alayne Street-Perrott & Johannes Lehmann & Stephen Joseph, 2010. "Sustainable biochar to mitigate global climate change," Nature Communications, Nature, vol. 1(1), pages 1-9, December.
    2. Johannes Lehmann, 2007. "A handful of carbon," Nature, Nature, vol. 447(7141), pages 143-144, May.
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    Cited by:

    1. Mutair A. Akanji & Munir Ahmad & Mohammad I. Al-Wabel & Abdullah S. F. Al-Farraj, 2022. "Soil Phosphorus Fractionation and Bio-Availability in a Calcareous Soil as Affected by Conocarpus Waste Biochar and Its Acidified Derivative," Agriculture, MDPI, vol. 12(12), pages 1-35, December.

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