Madras Agricultural Journal
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Research Article | Open Access | Peer Review

Effect of humic acid on nutrient release pattern in an Alfisol (Typinhaplustalf)

Volume : 90
Issue: Oct-dec
Pages: 665 - 670
Published: June 16, 2023
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Abstract


An incubation experiment was conducted to study the influence of Humic Acid (HA) on nutrient release, organic carbon (OC) content and cation exchange capacity (CEC) of the soil. The humic acid as potassium humate was added at graded doses (20 to 80 kg ha). A linear trend in the release of NP and K was observed for the application of HA. The release of N was significant upto 20 kg of HA ha', whereas for P and K it extended upto 40 kg ha. The N and P were released for a longer I period of 60 days, while K release attained a plateau on 45 days after incubation. At the end of incubation period, there was a steep and significant increase of organic carbon and CEC upto 40 kg HA ha¹.

DOI
Pages
665 - 670
Creative Commons
Copyright
© The Author(s), 2025. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

Keywords


Humic acid Release pattern of N P K Organic carbon CEC.
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