Effect of continuous and alternate water regimes on methane efflux from rice under greenhouse conditions

Mishra, Seema; Rath, Arun Kumar; Adhya, T. K.; Rao, V. R.; Sethunathan, N.

doi:10.1007/s003740050264

Cited by 75 publications

(43 citation statements)

References 15 publications

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“…Field observations indicated that CH 4 emissions were reduced in the intermittent irrigation system compared with the continuous flooding paddies [Yang and Chang, 2001]. A pot experiment with different courses of periodic drainage indicated the reduction factor was about 45% to 72% [Mishra et al, 1997]. Cai [1997] suggested that midseason aeration could mitigate CH 4 emissions by as much as 50%.…”

Section: Seasonmentioning

confidence: 99%

A 3‐year field measurement of methane and nitrous oxide emissions from rice paddies in China: Effects of water regime, crop residue, and fertilizer application

Zou

Huang

Jiang

et al. 2005

Global Biogeochemical Cycles

657

441

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[1] A 3-year field experiment was conducted to simultaneously measure methane (CH 4 ) and nitrous oxide (N 2 O) emissions from rice paddies under various agricultural managements including water regime, crop residue incorporation, and synthetic fertilizer application. In contrast with continuous flooding, midseason drainage incurred a drop in CH 4 fluxes while triggering substantial N 2 O emission. Moreover, N 2 O emissions after midseason drainage depended strongly on whether or not fields were waterlogged due to intermittent irrigation. Urea application tended to reduce CH 4 emissions but significantly increased N 2 O emissions. Under a water regime of flooding-midseason drainagereflooding-moist intermittent irrigation but without water logging (F-D-F-M), both wheat straw and rapeseed cake incorporation increased CH 4 emissions by 252%, and rapeseed cake increased N 2 O by 17% while wheat straw

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Section: Seasonmentioning

confidence: 99%

A 3‐year field measurement of methane and nitrous oxide emissions from rice paddies in China: Effects of water regime, crop residue, and fertilizer application

Zou

Huang

Jiang

et al. 2005

Global Biogeochemical Cycles

657

441

View full text Add to dashboard Cite

show abstract

“…Several studies from India indicated that intermittent flooding could remarkably reduce the seasonal methane emissions (22-88%) without any loss in rice yield [22]. Rice plant characteristics have a strong impact on methane emissions and a negligible to substantial differences (up to 56%) in the rate between different cultivars were recorded [33].…”

Section: Introductionmentioning

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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“…from subtropical Japanese rice fields. Kudo et al [87] The first measurements of CH 4 emission from paddy fields were conducted in California by Cicerone and Shetter [28].This was followed by extensive studies in Spain [138], China [26], USA [133], Japan [157], Philippines [115], and India [110,139] [136]. These field experiments varied widely in the methodologies (closed chamber with automatic or manual sampling devices), sampling frequencies (continuous or sporadic sampling), observation periods (one season or several consecutive years) and sampling field designs (randomized plots or single fields).…”

Section: Methanogenic Population and Ch 4 Emissionmentioning

confidence: 99%

Microbial Ecology of Me Thane Emission in Rice Agroecosystem: A Review

Dubey¹

2005

Appl Ecol Env Res

108

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Abstract. Methane has profound impact on the physico-chemical properties in atmosphere leading to global climate change. Out of the various sources of CH 4 , rice fields are the most significant contributors. The processes involved in the emission of CH 4 from rice fields to the atmosphere include CH 4 production (methanogenesis) in the soil by methanogens, methane oxidation (methanotrophy) by methanotrophs and vertical transfer of CH 4 via plant transport and diffusion or ebullition. In the overall methane dynamics rice plants act as : a) source of methanogenic substrate, b) conduit for CH 4 through well developed system of inter cellular air space (aerenchyma), and c) potential methane oxidizing micro-habitat in the rhizosphere by diffusing oxygen which favour the growth and multiplication of methanotrophs. Apart from mechanistic uncertainties, there are several other uncertainties in the estimation of CH 4 flux. Methane dynamics in the paddy field is controlled by a complex set of parameters linking the biological and physical characteristics of soil environment like temperature, carbon source, Eh, pH, soil microbes and properties of rice plants, etc. It has now become possible to isolate, detect and characterize the methanogens and methanotrophs by using molecular biological tools like PCR, FISH, etc. techniques. The apparent half saturation constant (K m ) and maximum oxidation rate (V max ) are distinctive parameters which determine the ability of bacteria to survive on atmospheric methane.

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Effect of continuous and alternate water regimes on methane efflux from rice under greenhouse conditions

Cited by 75 publications

References 15 publications

A 3‐year field measurement of methane and nitrous oxide emissions from rice paddies in China: Effects of water regime, crop residue, and fertilizer application

A 3‐year field measurement of methane and nitrous oxide emissions from rice paddies in China: Effects of water regime, crop residue, and fertilizer application

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

Microbial Ecology of Me Thane Emission in Rice Agroecosystem: A Review

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