Influence of Nitrification Inhibitor on Green House Gas (GHG) Emission under Intensive Paddy System

Abstract

The field experiments were carried out to assess the influence of Dicyandiamide (DCD) along with nine different nitrogen management practices on emission of methane (CH4 ) and nitrous oxide (N2 O) under intensive paddy system of Cauvery Delta Zone. The CH4and N2 O efflux clearly showed daily and seasonal fluctuations. Among the treatments, Leaf Colour Chart (LCC) based N (30 kg N ha-1 keeping the LCC value 4 as standard + DCD @ 10 % of applied N) recorded the lowest average emission of 0.50 mg.m2 .day-1 and 2.93 mg.m2 .day-1 of N2 O and CH4 , respectively. Irrespective of all treatments, among the critical stages of crop growth, flowering stage recorded highest emission of 23 % N2 Oand 50 % of CH4 when compared to tillering stage. Among the “N” applied treatments, Leaf Colour Chart (LCC) based N + DCD recorded the lowest seasonal green house gas emission (0.49 kg ha-1 & 0.44 kg ha-1 of N2 O and 2.94 kg ha-1 & 3.20 kg ha-1 of CH4 during Kharif and Rabi seasons, respectively) along with higher paddy yield (12 to 15%).

DOI

https://doi.org/10.29321/MAJ.10.201785

Pages

335 - 339

Creative Commons

Copyright

© The Author(s), 2026. 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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