Three-year measurement of methane emission from an Indonesian paddy field |
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| Authors: | S G Nugroho J Lumbanraja H Suprapto Sunyoto H Haraguchi M Kimura |
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| Institution: | (1) Faculty of Agriculture, Lampung University, Bandar Lampung, Sumatra, Indonesia;(2) School of Engineering, Nagoya University, Chikusa-ku, 464-01 Nagoya, Japan;(3) School of Agricultural Sciences, Nagoya University, Chikusa-ku, 464-01 Nagoya, Japan |
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| Abstract: | Yearly and seasonal (rainy and dry seasons) variations of CH4 emission from a Sumatra paddy field were measured for 3 years. The mean CH4 emission rates during the growth period were in the range of 16.0–26.1 mg CH4 m-2 h-1 for the chemical fertilizer plots and 23.3–34.9 mg CH4 m-2 h-1 for the plots with rice straw application, respectively. The increase in the amounts of CH4 emission by rice straw application were from 1.3 to 1.6 times. There was no significant difference in the mean CH4 emission rates between rainy and dry seasons.Total amounts of CH4 emitted during the period of rice growth were in the ranges of 29.5–48.2 and 43.0–64.6 g CH4 m-2 for the plots applied with chemical fertilizer and those with rice straw application, respectively. Nearly the same amounts of CH4 were emitted in the first and second half of the growth period, irrespective of rice straw application. |
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| Keywords: | dry season Indonesian paddy field methane emission rice straw wet season yield |
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