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Soil organic carbon: associating the Walkley - Black wet oxidation method to loss on ignition (gravimetric method) and clay content for selected Samoan inceptisols

Anand, Sanjay (2022) Soil organic carbon: associating the Walkley - Black wet oxidation method to loss on ignition (gravimetric method) and clay content for selected Samoan inceptisols. European Journal of Applied Sciences, 10 (2). pp. 219-227. ISSN 2634-9221

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Abstract

Precise estimation of soil organic carbon (SOC) is vital in many scientific fields including natural and applied sciences, as well as climate science researches. Ordinary methods of measuring soil organic carbon (SOC) aren’t sufficient for accurate estimation of C sequestration nor to meet environmental safety standards. Methods that allow for accurate assessment of SOC, which are eco-friendly, and yet practicable are more desirable for use in developing countries. Loss on ignition method (LOI) of appraising SOC offers an alternative method to the traditional Walkley-Black (W-B) method of organic carbon determination. A quantitative relation between LOI and Walkley-Black methods was studied for selected Samoan inceptisols. For this study, 36 soil samples from 0-15 cm depth were collected from 12 sites to determine the levels of SOC (%) by both the methods. Clay contents were also determined and used to develop simple and multiple linear regression equations. Highly significant positive associations (P< 0.001).

Item Type: Journal Article
Subjects: S Agriculture > S Agriculture (General)
Divisions: School of Agriculture, Geography, Environment, Ocean and Natural Sciences (SAGEONS)
Depositing User: Sanjay Anand
Date Deposited: 30 Sep 2022 02:12
Last Modified: 30 Sep 2022 02:12
URI: http://repository.usp.ac.fj/id/eprint/13723
UNSPECIFIED

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