Studies on the Use of Radioactive K-40 in the Determination of Plant Available K in Some Hawaiian Soils

SP. PALANIAPPAN

doi:https://doi.org/10.29321/MAJ.10.A03161

Research Article | Open Access | Peer Review

Studies on the Use of Radioactive K-40 in the Determination of Plant Available K in Some Hawaiian Soils

SP. PALANIAPPAN

Volume : 64

Issue: Mar-mar

Pages: 145 - 148

DOI: https://doi.org/10.29321/MAJ.10.A03161

Published: October 11, 2023

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Abstract

With a view to study the usefulness of the naturally occurring radioactive K-40 in characterising the labile pool of soil K as a meaure of available K. a study was undertaken with eleven Hawaiian soils representing different stages of development and fertility. Labile pool was determined using K-40 as tracer and this was compared to X extracted by successive leaching of soils with 0.01 M CaCl. exchangeable K and X romoved by 4 week old corn seedlings grown in pots. Labile pool K is very closely related to plant uptake and so can be used as a successful parameter in characterising soil K fertility status.

DOI

https://doi.org/10.29321/MAJ.10.A03161

Pages

145 - 148

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.

Studies on the Use of Radioactive K-40 in the Determination of Plant Available K in Some Hawaiian Soils

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Studies on the Use of Radioactive K-40 in the Determination of Plant Available K in Some Hawaiian Soils

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ISSN : 0024-9602

eISSN : 2582-5321

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