Lumbanraja, Jamalam and Nugroho, Sutopo Ghani and Niswati, Ainin and Ardjasa, Wayan Sabe and Subadiyasa, Netera and Arya, Nyoman and Haraguchi, Hiroki and Kimura, Makoto (1998) Methane emission from Indonesian rice fields with special references to the effects of yearly and seasonal variations, rice variety, soil type and water management. Hydrological Processes, 12 (13-14). pp. 2057-2072.

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Abstract

Total amounts of CH4 emission from a Sumatra rice field were in the ranges 29·5–48·2 and 43·0–64·6 g CH4 m−2 season−1 for the plots with chemical fertilizer (CF-plot) and those with rice straw application (RS-plot), respectively. Nearly the same amounts of CH4 were emitted in the first and second half of the growth period, irrespective of rice straw application. 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. Rain-fed conditions decreased the CH4 emission by 27–37% compared with continuously flooded conditions. Total amounts of CH4 emission from a rice field growing eight popular modern rice varieties in Indonesia were in the ranges 32·6–41·7 and 51·3–64·6 g CH4 m−2 season−1 for CF- and RS-plots, respectively. Total amounts of CH4 emission from four Sumatra rice fields with different soil types (a Typic Paleudult, a Typic Sulfaquent, a Typic Tropohumult and a Typic Tropopsament) were in the range 22·1 (a Typic Sulfaquent) to 53·4 (a Typic Tropohumult) g CH4 m−2 season−1 for CF-plots and from 26·7 (a Typic Sulfaquent) to 72·2 (a Typic Tropohumult) g CH4 m−2 season−1 for RS-plots. CH4 emission rates from Bali rice fields with soils of volcanic ash origin were very low; 3·5–7·7 and 5·3–14·3 g CH4 m−2 season−1 for CF- and RS-plots, respectively. Respective rice fields showed the specific productivity of grain production, and CH4 emission rates for 1 kg grain production were scattered widely from 8–11 and 11·24 g CH4 kg−1 grain for rice fields of volcanic ash origin to 83 and 121 g CH4 kg−1 grain for a Sumatra rice field for CF- and RS-plots, respectively. Water management was also an important factor in decreasing the CH4 emission rate. Copyright © 1998 John Wiley & Sons, Ltd.

Item Type:	Article
Subjects:	S Agriculture > S Agriculture (General)
Divisions:	Fakultas Pertanian (FP) > Prodi Ilmu Tanah
Depositing User:	Prof Dr Ainin Niswati
Date Deposited:	11 Oct 2016 03:39
Last Modified:	11 Oct 2016 03:39
URI:	http://repository.lppm.unila.ac.id/id/eprint/726

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