Methane emission characteristics and its relations with plant and soil parameters under irrigated rice ecosystem of northeast India

Gogoi, Nirmali; Baruah, K. K.; Gogoi, Bhabesh; Gupta, Prabhat K.

doi:10.1016/j.chemosphere.2004.11.047

Cited by 64 publications

(25 citation statements)

References 6 publications

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“…The 2 nd high peak at 28 DAS in T1 was due to application of remaining dose of nitrogenous fertilizer resulting in higher availability of nitrogen substrate for nitrifying and denitrifying microorganisms promoting both the processes of nitrification and denitrification (Hou and Tsuruta, 2003). In T2 and T4, the emission peaks at 28 DAS are considered to be due to profuse tillering and is in good agreement with Gogoi et al, (2005) and Baruah et al, (2010a). The slow decomposition of rice straw might have contributed to slow release of nutrients and are not readily available to the crop which might be the reason of late tillering observed in the plants at T3 (Eiland et al, 2001) resulting in an increase of N 2 O emission at 35 DAS.…”

Section: Discussionsupporting

confidence: 53%

“…It has the third largest forcing of the anthropogenic gases, at 0.17 ± 0.03 Wm -2 with an increase of 6% since 2005(AR5, IPCC, 2014. At present the atmospheric concentration of N 2 O is increasing linearly at the rate of 0.3% year -1 which has increased from 270 ± 7 ppbv in the pre -industrial era to approximately 324 ± 2 ppbv at present (Ussiri and Lal, 2013;AR-5, IPCC, 2014 ).…”

Section: Introductionmentioning

confidence: 99%

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Effect of organic amendments with varied C-N ratios on grain productivity and nitrous oxide (N2O) emission from wheat grown in alluvial soil

Baruah¹,

Bordoloi²,

Baruah³

2016

Aust J Crop Sci

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Section: Discussionsupporting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Effect of organic amendments with varied C-N ratios on grain productivity and nitrous oxide (N2O) emission from wheat grown in alluvial soil

Baruah¹,

Bordoloi²,

Baruah³

2016

Aust J Crop Sci

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“…A second, more detailed study focused on the effect of placing a sediment MFC in the rhizosphere of rice plants on greenhouse gas emissions. (Gogoi et al 2005;Singh et al 1999;Xu et al 2007)). The microcosm that was not supplemented with straw was the configuration that came close to natural CH 4 fluxes in the order of 35 mgCH 4 m -2 h -1 .…”

Section: Resultsmentioning

confidence: 99%

“…Methane emissions from rice paddies can be estimated to range from 0 up to 60 mgCH 4 m -2 h -1 (Gogoi et al 2005;Singh et al 1999;Xu et al 2007). This corresponds to the equivalent of an electrical current of 0 to 804 mA m -2 (See supplementary information for calculations).…”

Section: Introductionmentioning

confidence: 99%

Greenhouse gas emissions from rice microcosms amended with a plant microbial fuel cell

Arends

Speeckaert

Blondeel

et al. 2013

Appl Microbiol Biotechnol

112

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Methane (CH 4 ) release from wetlands is an important source of greenhouse gas emissions. Gas exchange occurs mainly through the aerenchyma of plants and production of greenhouse gases is heavily dependent on rhizosphere biogeochemical conditions (i.e. substrate availability and redox potential). It is hypothesized that by introducing a biocatalyzed anode electrode in the rhizosphere of wetland plants, a competition for carbon and electrons can be invoked between electrical current generating bacteria and methanogenic archaea. The anode electrode is part of a bioelectrochemical system (BES) capable of harvesting electrical current from microbial metabolism. In this work, the anode of a BES was introduced in the rhizosphere of rice plants (Oryza sativa) and the impact on methane emissions was monitored.Microbial current generation was able to outcompete methanogenic processes when the bulk matrix contained low concentrations of organic carbon, provided that the electrical circuit with the effective electro-active microorganisms was in place. When interrupting the electrical circuit or supplying an excess of organic carbon, methanogenic metabolism was able to outcompete current generating metabolism. The qPCR results showed hydrogenotrophic methanogens were the most abundant methanogenic group present, while mixotrophic or acetoclastic methanogens were hardly detected in the bulk rhizosphere or on the electrodes. Competition for electron donor and acceptor were likely the main drivers to lower methane emissions. Overall, electrical current generation with BESs is an interesting option to control CH 4 emissions from wetlands but needs to be applied in combination with other mitigation strategies to be successful and feasible in practice.

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“…at maximum tillering stage of the crop, has been attributed to the decomposition of native organic matter in the soil which is left over as organic residues from the previous crop growing season thus increasing the substrate concentration for methanogenesis. It was reported that active vegetative growth stage of paddy at tillering enhances the transport of CH 4 produced in the rhizosphere through the rice plant to the atmosphere [3,10,11]. The second emission peak at 91 DAT (reproductive stage) is due to the additional organic matter from root exudates and root litters, which increases the carbon pool of the soil.…”

Section: Discussionmentioning

confidence: 99%

Methane Emission From Two Different Rice Ecosystems ( Ahu and Sali ) at Lower Brahmaputra Valley Zone of North East India

Gogoi¹

2008

Appl Ecol Env Res

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Abstract.Monocropping of rice is practiced in Assam (situated at north east part of India) throughout the year in different agro-ecosystems (upland and lowland) primarily under rainfed conditions. The estimation of methane emission has been realized investigating high yielding rice varieties viz. Ranjit and Mahsuri, grown under two different agro-ecosystems at Lower Brahmaputra Valley Zone of Assam with sandy to sandy loam type of soil. Variety 'Ranjit' grown at monsoon (Sali) rice ecosystem at lowland rainfed condition showed higher seasonal integrated methane flux value compared to variety 'Mahsuri' grown at pre monsoon (Ahu) rice ecosystem. Both varieties showed two methane peaks, one at the active tillering stage and the second at the reproductive stage of the crop. The observed variation in methane emission peaks are contributed mainly by physiological characteristics of the rice plant such as leaf numbers, tiller numbers, plant height, root shoot biomass and leaf area index. Statistical analysis of these parameters showed a positive correlation with methane emission. These physiological parameters are in turn governed by plant genotypes and environment i.e., the field water availability and climatological factors (rainfall and temperature) during the growing season. While comparing the two ecosystems it was found that methane emission is significantly less from upland rainfed rice ecosystem and this ecosystem can be considered a suitable option for biological mitigation of methane from rice paddies.

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Methane emission characteristics and its relations with plant and soil parameters under irrigated rice ecosystem of northeast India

Cited by 64 publications

References 6 publications

Effect of organic amendments with varied C-N ratios on grain productivity and nitrous oxide (N2O) emission from wheat grown in alluvial soil

Effect of organic amendments with varied C-N ratios on grain productivity and nitrous oxide (N2O) emission from wheat grown in alluvial soil

Greenhouse gas emissions from rice microcosms amended with a plant microbial fuel cell

Methane Emission From Two Different Rice Ecosystems ( Ahu and Sali ) at Lower Brahmaputra Valley Zone of North East India

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