NDLI: Effect of intermittent drainage on methane and nitrous oxide emissions under different fertilization in a temperate paddy soil during rice cultivation

Content Provider	Springer Nature Link
Author	Jeong, Hyun Cheol Kim, Gun Yeob Haque, M. D. Mozammel Lee, Jong Sik Kim, Pil Joo Gutierrez, Jessie
Copyright Year	2014
Abstract	Although intermittent drainage is regarded as a key factor to reduce methane (CH$_{4}$) emission from paddy soil during rice cultivation, it also could increase nitrous oxide (N$_{2}$O) emission. However, the effects of intermittent drainage on CH$_{4}$ and N$_{2}$O emissions with different global warming potential (GWP) values have not been well examined. In the present study, the effect of a 26-day intermittent drainage from the 34$^{th}$ day after transplanting (DAT) to the 60$^{th}$ DAT on two greenhouse gas (GHG) fluxes and yield properties were compared with those of a continuous flooding system under different fertilization (NPK as control, PK, and NPK+straw) during rice cultivation. The effect of intermittent drainage on changing two GHG emissions was compared using the GWP value, calculated as CO$_{2}$ equivalents by multiplying 25 and 298 to the seasonal CH$_{4}$ and N$_{2}$O fluxes, respectively. Under the same irrigation condition, addition of nitrogen to PK significantly increased seasonal CH$_{4}$ and N$_{2}$O fluxes, and addition of straw to NPK increased CH$_{4}$ and N$_{2}$O. Irrespective with fertilization background, the intermittent drainage significantly reduced the total GWP by ca. 41–70% as affected by the big reduction of seasonal CH$_{4}$ fluxes by ca. 43–53% to that of the continuous flooding even with an increase of seasonal N$_{2}$O emissions by ca. 16–43%. Rice productivity was not significantly different between the two different irrigation systems under same fertilization background. As a result, total GWP per grain yield was significantly lower in all fertilization treatments with intermittent drainage compared with continuous flooding.
Starting Page	229
Ending Page	236
Page Count	8
File Format	PDF
ISSN	17382203
Journal	Journal of the Korean Society for Applied Biological Chemistry
Volume Number	57
Issue Number	2
e-ISSN	2234344X
Language	English
Publisher	The Korean Society for Applied Biological Chemistry
Publisher Date	2014-04-17
Publisher Place	Seoul
Access Restriction	Subscribed
Subject Keyword	paddy soil nitrous oxide intermittent drainage methane Applied Microbiology Biological Techniques rice Bioorganic Chemistry
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Biochemistry, Genetics and Molecular Biology

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