Advanced search
1 file | 4.85 MB Add to list

Assessing the effectiveness of the Walkley-Black method for soil organic carbon determination in tephra soils of Cameroon

Author
Organization
Abstract
The Walkley-Black (WB) method has been widely used for soil organic carbon (SOC) determination with little attention on its reliability and effectiveness compared to the dry combustion (DC) method. This study compared SOC contents of some Cameroon tephra soils as determined by the WB and DC methods to assess the effectiveness of the WB method, using surface and subsurface soil samples. SOC contents by both methods were significantly different for both surface (t = 15.47, p < 0.001) and sub-surface (t = 12.35, p < 0.001) samples. The low carbon recovery of 45.36% (recovery factor of 2.38) and 35.87% (recovery factor of 3.34) for surface and subsurface samples, respectively indicates that the WB method greatly underestimates SOC contents in tephra soils. The higher positive significant correlation between both methods for surface samples (r = 0.83**, p < 0.01) compared to subsurface samples (r = 0.6*, p < 0.05) confirms high variability in subsurface samples. This study will guide the choice of method in SOC determination in the tropics where similar soils obtain and where cost constraints and the search for a more pollutant-free method for soil OC determination warrants an alternative method to the WB.
Keywords
Cameroon, dry combustion, Kupe Mountain, recovery factor, tephra soils, wet combustion, MATTER, COMBUSTION, FORESTS

Downloads

  • (...).pdf
    • full text (Published version)
    • |
    • UGent only
    • |
    • PDF
    • |
    • 4.85 MB

Citation

Please use this url to cite or link to this publication:

MLA
Enang, Roger Kogge, et al. “Assessing the Effectiveness of the Walkley-Black Method for Soil Organic Carbon Determination in Tephra Soils of Cameroon.” COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, vol. 49, no. 19, 2018, pp. 2379–86.
APA
Enang, R. K., Yerima, B. P. K., Kome, G. K., & Van Ranst, E. (2018). Assessing the effectiveness of the Walkley-Black method for soil organic carbon determination in tephra soils of Cameroon. COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, 49(19), 2379–2386.
Chicago author-date
Enang, Roger Kogge, Bernard Palmer Kfuban Yerima, Georges Kogge Kome, and Eric Van Ranst. 2018. “Assessing the Effectiveness of the Walkley-Black Method for Soil Organic Carbon Determination in Tephra Soils of Cameroon.” COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS 49 (19): 2379–86.
Chicago author-date (all authors)
Enang, Roger Kogge, Bernard Palmer Kfuban Yerima, Georges Kogge Kome, and Eric Van Ranst. 2018. “Assessing the Effectiveness of the Walkley-Black Method for Soil Organic Carbon Determination in Tephra Soils of Cameroon.” COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS 49 (19): 2379–2386.
Vancouver
1.
Enang RK, Yerima BPK, Kome GK, Van Ranst E. Assessing the effectiveness of the Walkley-Black method for soil organic carbon determination in tephra soils of Cameroon. COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS. 2018;49(19):2379–86.
IEEE
[1]
R. K. Enang, B. P. K. Yerima, G. K. Kome, and E. Van Ranst, “Assessing the effectiveness of the Walkley-Black method for soil organic carbon determination in tephra soils of Cameroon,” COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, vol. 49, no. 19, pp. 2379–2386, 2018.
@article{8613479,
  abstract     = {{The Walkley-Black (WB) method has been widely used for soil organic carbon (SOC) determination with little attention on its reliability and effectiveness compared to the dry combustion (DC) method. This study compared SOC contents of some Cameroon tephra soils as determined by the WB and DC methods to assess the effectiveness of the WB method, using surface and subsurface soil samples. SOC contents by both methods were significantly different for both surface (t = 15.47, p < 0.001) and sub-surface (t = 12.35, p < 0.001) samples. The low carbon recovery of 45.36% (recovery factor of 2.38) and 35.87% (recovery factor of 3.34) for surface and subsurface samples, respectively indicates that the WB method greatly underestimates SOC contents in tephra soils. The higher positive significant correlation between both methods for surface samples (r = 0.83**, p < 0.01) compared to subsurface samples (r = 0.6*, p < 0.05) confirms high variability in subsurface samples. This study will guide the choice of method in SOC determination in the tropics where similar soils obtain and where cost constraints and the search for a more pollutant-free method for soil OC determination warrants an alternative method to the WB.}},
  author       = {{Enang, Roger Kogge and Yerima, Bernard Palmer Kfuban and Kome, Georges Kogge and Van Ranst, Eric}},
  issn         = {{0010-3624}},
  journal      = {{COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS}},
  keywords     = {{Cameroon,dry combustion,Kupe Mountain,recovery factor,tephra soils,wet combustion,MATTER,COMBUSTION,FORESTS}},
  language     = {{eng}},
  number       = {{19}},
  pages        = {{2379--2386}},
  title        = {{Assessing the effectiveness of the Walkley-Black method for soil organic carbon determination in tephra soils of Cameroon}},
  url          = {{http://dx.doi.org/10.1080/00103624.2018.1510948}},
  volume       = {{49}},
  year         = {{2018}},
}

Altmetric
View in Altmetric
Web of Science
Times cited: