Madras Agricultural Journal
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Research Article | Open Access | Peer Review

SOURCE AND TIMES OF SPLITS OF NITROGEN ON N UPTAKE AND ITS EFFICIENCY ON IRRIGATED LOWLAND RICE

Volume : 86
Issue: Jul-sep
Pages: 429 - 431
Published: June 29, 2023
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Abstract


Effect of green' manure in combination with different times of N splits as urea nitrogen on growth, nitrogen uptake and its efficiency was studied in irrigated lowland rice. There was slow but steady accumulation of N in the leaves when basal manuring was done through green leaf manure (GLM). There was loss in the total N uptake, when 40 kg N was applied at AT, which resulted in profuse tiller production. A starter dose of 20 kg N at AT was found essential to improve the N uptake when GLM was basal applied. Split application of N 40 kg each as basal and at Pl with 20 kg each at AT. one week after AT and again at heading resulted in better N uptake with better nitrogen use efficiency (NUE). Agronomic efficiency (AE) was higher with urea N basal compared to GLM.

DOI
Pages
429 - 431
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


Nitrogen Uptake Split application Green leaf manure Urea-N NUE AE
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