Humic Acid (HA) and Fulvic Acid (FA) Carbon

Kale, S and Rakesh, S and Choudhari, P and Sawargaonkar, G L and Singh, R and Jat, M L (2026) Humic Acid (HA) and Fulvic Acid (FA) Carbon. In: Soil Carbon Fractionation Techniques and Protocols. Sustainability Sciences in Asia and Africa, 1 . Springer, Singapore, pp. 63-67. ISBN 978-981-95-4067-9

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Abstract

Humic acid (HA) and fulvic acid (FA), key passive fractions of soil organic matter, differ in molecular size and solubility, contributing to long-term carbon sequestration and nutrient exchange, and are extracted using base–acid fractionation. Their characterization provides insights into soil quality, carbon stability, and nutrient availability.

Item Type: Book Section
Divisions: Global Research Program - Resilient Farm and Food Systems
CRP: UNSPECIFIED
Series Name: Sustainability Sciences in Asia and Africa
Uncontrolled Keywords: Humic acid carbon (HA-C), Fulvic acid carbon (FA-C), Passive carbon pool, Soil organic matter, Base-acid extraction method, Walkley and Black method, Soil carbon sequestration, Soil health indicator
Subjects: Others > Soil Fertility
Others > Soil
Others > Soil Science
Depositing User: Mr Nagaraju T
Date Deposited: 05 Feb 2026 03:42
Last Modified: 05 Feb 2026 03:42
URI: http://oar.icrisat.org/id/eprint/13454
Acknowledgement: UNSPECIFIED
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