Madras Agricultural Journal
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Research Article | Open Access | Peer Review

CRITICAL LEVEL OF ZINC IN SEMIARID SOILS OF COIMBATORE DISTRICT AND MAIZE PLANT

Volume : 81
Issue: Jul-jul
Pages: 378 - 381
Published: August 13, 2023
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Abstract


A greenhouse experiment results showed that Zn fertilisation at 5 ppm Zn was found to be effective in increasing the total dry matter production of maize crop. Evaluation of soil tests for available Zn with six extractants showed that 1.00 ppm of DTPA extractable Zn can be used as a critical level for Zn in soils for delineating the soils of Coimbatore district. The DTPA method has significant correlation not only with Bray's per cent yield but also with actual yield, Zn content in leavs, and Zn content in leaf sheath and stem. Diagnostic criteria for Zn in plant revealed that 21 ppm Zn can be used as critical level for Zn in leaf of seven weeks old well established maize plant

DOI
Pages
378 - 381
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.

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