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Predicting Total Organic Carbon Content of Soils from Walkley and Black Analysis

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Title Predicting Total Organic Carbon Content of Soils from Walkley and Black Analysis
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Creator Pramod Jha, A. K. Biswas, Brij Lal Lakaria, R. Saha, Muneshwar Singh & A. Subba Rao
 
Subject Climate, soil texture, total soil organic carbon, Walkley–Black carbon
 
Description Not Available
Globally, there is problem of computing soil carbon stock because the Walkley–Black
method gives only an approximation of soil organic carbon content. Until now, no
universal relationship between Walkley–Black carbon (WBC) and total soil organic
carbon (TOC) has been developed that could be applicable in all kinds of soil.
In the present study, relationships between WBC and TOC were established from
samples collected from central and northern India. TOC was measured by dry combustion
technique and WBC was determined by wet digestion methods. A relationship
between WBC and TOC was developed by taking into account silt + clay content
(SICL) of soil and mean annual rainfall (MAR) of the region (adj. R2 = 0.99,
n = 100). The present study gives an easy approach to measure TOC by easily
available data sets (WBC, SICL, and MAR). Using this relationship, computation
of soil carbon stock that was done earlier with WBC values could be revisited and
improved.
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Date 2020-05-15T14:31:44Z
2020-05-15T14:31:44Z
2014-04-01
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/35671
 
Language English
 
Relation Not Available;
 
Publisher Not Available