Water management — A tool for methane mitigation from irrigated paddy fields

Tyagi, Larisha; Kumari, Babita; Singh, Sunil Kumar

doi:10.1016/j.scitotenv.2009.09.010

Cited by 93 publications

(44 citation statements)

References 26 publications

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“…Alternate wet-dry conditions delayed the onset of CH 4 emission as compared to continuously flooded plots. This pattern of a retarded initiation of CH 4 emission has also been observed in mid-season and multiple drainage treatments (Itoh et al, 2011;Towprayoon et al, 2005;Tyagi et al, 2010). This decrease can be ascribed to temporary soil aeration generated due to partial drying of the soil that in turn suppresses methanogenic activity and may increase aerobic methanotrophic activity.…”

Section: Irrigation Water Productivity Total Water Productivity -----supporting

confidence: 61%

“…Water management is one of the most important tools for achieving high levels of production as well as a promising option for the mitigation of CH 4 . Changes in water management such as intermittent irrigation and mid-season drainage are effective options for the mitigation of CH 4 in rice fields (Hadi et al, 2010;Itoh et al, 2011;Jain et al, 2013;Minamikawa and Sakai, 2006;Tyagi et al, 2010;Yagi et al, 1997). However, these practices of alternate anaerobic and aerobic cycling can stimulate the emission of another GHG, nitrous oxide (N 2 O), via denitrification and nitrification, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Yield-scaled global warming potential of two irrigation management systems in a highly productive rice system

Tarlera

Capurro

Irisarri

et al. 2016

Sci. agric. (Piracicaba, Braz.)

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, 55 % lower compared to CF30, while no differences in nitrous oxide emissions were observed between treatments (p > 0.05). No yield differences between irrigation systems were observed in two of the rice seasons (p > 0.05) while AWDI promoted yield reduction in one of the seasons (p < 0.05). When rice yield and greenhouse gases (GHG) emissions were considered together, the AWDI irrigation system allowed for lower yield-scaled total global warming potential (GWP). Higher irrigation water productivity was achieved under AWDI in two of the three rice seasons. These findings suggest that AWDI could be an option for reducing GHG emissions and increasing irrigation water productivity. However, AWDI may compromise grain yield in certain years, reflecting the importance of the need for fine tuning of this irrigation strategy and an assessment of the overall tradeoff between relationships in order to promote its adoption by farmers.

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Section: Irrigation Water Productivity Total Water Productivity -----supporting

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Yield-scaled global warming potential of two irrigation management systems in a highly productive rice system

Tarlera

Capurro

Irisarri

et al. 2016

Sci. agric. (Piracicaba, Braz.)

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“…The observed seasonal methane effluxes from the plots were 347, 315, 291, and 205 mg CH 4 per m 2 per day, for the continuous flooding, tillering stage drainage, midseason drainage, and intermittent drainage treatments, respectively. In comparison with continuous flooding, seasonal methane emissions were reduced by 9%, 37%, and 41%, respectively, with the selected drainage treatments [182].…”

Section: Intermittent Drainage Vs Continuous Floodingmentioning

confidence: 95%

“…Tyagi et al [182] examined the impacts of midseason and intermittent drainage on methane emissions from rice fields on an experiment station in Lucknow, India, where farmers typically drain their rice paddies once each season, at the tillering stage, to provide oxygen to the roots. The authors compared that practice with continuous flooding, midseason drainage at 70 days after planting, and intermittent drainage involving two drainage events at 21 days and 77 days after planting.…”

Section: Intermittent Drainage Vs Continuous Floodingmentioning

confidence: 99%

Managing Water and Soils to Achieve Adaptation and Reduce Methane Emissions and Arsenic Contamination in Asian Rice Production

Wichelns

2016

Water

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Rice production is susceptible to damage from the changes in temperature and rainfall patterns, and in the frequency of major storm events that will accompany climate change. Deltaic areas, in which millions of farmers cultivate from one to three crops of rice per year, are susceptible also to the impacts of a rising sea level, submergence during major storm events, and saline intrusion into groundwater and surface water resources. In this paper, I review the current state of knowledge regarding the potential impacts of climate change on rice production and I describe adaptation measures that involve soil and water management. In many areas, farmers will need to modify crop choices, crop calendars, and soil and water management practices as they adapt to climate change. Adaptation measures at the local, regional, and international levels also will be helpful in moderating the potential impacts of climate change on aggregate rice production and on household food security in many countries. Some of the changes in soil and water management and other production practices that will be implemented in response to climate change also will reduce methane generation and release from rice fields. Some of the measures also will reduce the uptake of arsenic in rice plants, thus addressing an important public health issue in portions of South and Southeast Asia. Where feasible, replacing continuously flooded rice production with some form of aerobic rice production, will contribute to achieving adaptation objectives, while also reducing global warming potential and minimizing the risk of negative health impacts due to consumption of arsenic contaminated rice.

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“…A adição de material orgânico, além de favorecer processos de redução no solo, também intensifica as emissões de CH 4 pela disponibilização de C lábil para microrganismos metanogênicos (Kim et al, 2012). Por sua vez, a supressão da água de irrigação, com consequente drenagem e oxidação do solo, pode mitigar significativamente as emissões de CH 4 (Tyagi et al, 2010). Contudo, ao se suprimir a irrigação e promover a difusão do oxigênio no solo, cria-se um ambiente favorável à produção de N 2 O, pela intensificação dos processos de nitrificação e desnitrificação (Zou et al, 2007).…”

Section: Introductionunclassified

Impacto de plantas de cobertura e da drenagem do solo nas emissões de CH 4 e N 2 O sob cultivo de arroz irrigado

Zschornack

Rosa

Camargo

et al. 2016

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o impacto das plantas de cobertura de inverno azevém (Lolium multiflorum) e azevém+cornichão (Lotus corniculatus), bem como da drenagem parcial do solo, nas emissões de CH 4 e N 2 O em um Planossolo cultivado com arroz irrigado. Amostras de ar foram coletadas semanalmente com câmara estática fechada, parcialmente inserida no solo (0,05 m). Calcularam-se o potencial de aquecimento global parcial (PAGp=CH 4 ×25+N 2 O×298) e o PAGp por unidade de produtividade de grãos (PAGpPG). A drenagem parcial foi estabelecida pela suspenção temporária da irrigação por períodos de 8 a 15 dias, durante três ocasiões ao longo do ciclo da cultura. O aporte de resíduos pelas plantas de cobertura intensificou os fluxos de CH 4 do solo, que excederam em dez vezes a emissão acumulada do solo em pousio invernal. As emissões de N 2 O foram maiores com o consórcio azevém+cornichão, em comparação ao azevém e ao pousio. O cultivo de plantas de cobertura elevou o índice PAGpPG (0,35 kg de CO 2 eq por quilograma de arroz), comparativamente ao pousio (0,06 kg kg -1 ). Nos tratamentos com cobertura de inverno, as estratégias de mitigação devem focar principalmente no CH 4 , que foi responsável pela maior porção (80%) do PAGp. A drenagem parcial reduziu em até 50% o PAGp e apresenta grande potencial para mitigar as emissões de gases em sistemas de produção de arroz irrigado.Termos para indexação: Oryza sativa, gases de efeito estufa, irrigação intermitente, manejo da água, potencial de aquecimento global, resíduos culturais. Impact of cover crops and soil drainage in CH 4 and N 2 O emissions under irrigated rice cultivationAbstract -The objective of this work was to evaluate the effect of the winter cover crops ryegrass (Lolium multiflorum) and ryegrass+birdsfoot trefoil (Lotus corniculatus), as well as of partial soil drainage, on CH 4 and N 2 O emissions in an Alfisol cultivated with paddy rice. Air samples were collected weekly using static closed chambers partially inserted in the soil (0.05 m). Partial global warming potential (pGWP= CH 4 ×25+N 2 O×298) and yield-scaled pGWP were calculated. Partial soil drainage was established with temporal suspensions of the irrigations for periods of 8 to 15 days, during three occasions throughout the crop cycle. Biomass input by cover crop residues increased CH 4 fluxes, which exceeded ten times the accumulated emissions of fallow soil. N 2 O emissions were higher in the ryegrass+birdsfoot trefoil treatment, compared with ryegrass and fallow. Cover crops increased yield-scaled pGWP (0.35 kg CO 2 eq per kilogram of rice) compared with fallow (0.06 kg kg -1). In the treatments with winter crops, mitigation strategies should focus mainly on CH 4 , which was responsible for the greater portion (80%) of pGWP. Partial drainage reduced pGWP up to 50% and has great potential for mitigating gas emissions in subtropical irrigated rice production systems.

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Water management — A tool for methane mitigation from irrigated paddy fields

Cited by 93 publications

References 26 publications

Yield-scaled global warming potential of two irrigation management systems in a highly productive rice system

Yield-scaled global warming potential of two irrigation management systems in a highly productive rice system

Managing Water and Soils to Achieve Adaptation and Reduce Methane Emissions and Arsenic Contamination in Asian Rice Production

Impacto de plantas de cobertura e da drenagem do solo nas emissões de CH 4 e N 2 O sob cultivo de arroz irrigado

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