International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 7, Issue:10, October, 2018

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(10): 146-154

Quantification of Soil Organic Carbon - Comparison of Wet Oxidation and Dry Combustion Methods
V. Ramamoorthi and S. Meena*
Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore-641 003, Tamil Nadu, India
*Corresponding author

Different methods of soil organic carbon (SOC) determination namely Walkley and Black (WB), Modified WB, Photometric, gravimetric and dry combustion methods were compared. Each method has its own advantages and limitations. Percentage of carbon recovered ranged from 51.03 to 110.13 and the calculated correction factor (CF) varied from 0.90 to 1.95. Highly significant correlation (r) was obtained among all the SOC methods. The highest and lowest coefficient of determination (R2) was found in Heanes photometric (0.91) and gravimetric methods (0.75), respectively. Therefore, Heanes photometric method can be a potential method to substitute the WB method, which is most widely used in Indian soil testing laboratories.

Keywords: Walkley and Black, Soil organic carbon, Heanes method, Dry combustion

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How to cite this article:

Ramamoorthi, V. and Meena, S. 2018. Quantification of Soil Organic Carbon - Comparison of Wet Oxidation and Dry Combustion Methods.Int.J.Curr.Microbiol.App.Sci. 7(10): 146-154. doi:
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.