Methane and nitrous oxide emissions from flooded rice fields as affected by water and straw management between rice crops

Sander, Bjoern Ole; Samson, M. I.; Buresh, R. J.

doi:10.1016/j.geoderma.2014.07.020

Cited by 122 publications

(72 citation statements)

References 31 publications

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“…2J and Supplementary Table S1). This is consistent with Sander et al (2014) and Tirol-Padre et al (2017) that reported that straw incorporation and field flooding during fallow period increased the CH 4 emission in the subsequent rice growing season.…”

Section: The Magnitude Of Ghg Emission In This Sitesupporting

confidence: 92%

Impacts of alternate wetting and drying on greenhouse gas emission from paddy field in Central Vietnam

Tran

Hoang

Tokida

et al. 2017

Soil Science and Plant Nutrition

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Vietnam is the world's fifth largest rice producing country. Since methane (CH 4 ), a potent greenhouse gas (GHG), emission from the rice cultivation accounts for 14.6% of the national anthropogenic GHG emission, developing and disseminating mitigation options are the urgent need. Alternate wetting and drying (AWD) is the irrigation technique, in which a paddy field encompasses several soil-drying phases during the growth period, thereby reducing the CH 4 emission. However, field trials of the AWD's feasibility in Central Vietnam are limited so far. We therefore carried out a 3-year experiment in a farmer's field both in winter-spring season and summer-autumn season. CH 4 and nitrous oxide (N 2 O) emissions were compared among the three treatments of water management: continuous flooding (CF), AWD, and site-specific AWD (AWDS) that changed the degree of soil drying depending on the growth stage. The total water use including irrigation and rainfall was significantly (p < 0.05) reduced by AWD (by 15%) and AWDS (by 14%) compared to CF, but rice grain yield did not differ among the three treatments. The seasonal cumulative CH 4 emission was significantly reduced by AWD (26%) and AWDS (26%) compared to CF, whereas the seasonal cumulative N 2 O emission did not differ among treatments. The resultant global warming potentials (GWPs) of CH 4 and N 2 O under AWD and AWDS were 26% and 29% smaller than that under CF, respectively. The GWP of N 2 O was only 0.8% of the total GWP of CH 4 + N 2 O. The yield-scaled GWP and water productivity (i.e., the ratio of grain yield to water use) were also improved by AWD and AWDS. No significant differences in the measured items between AWD and AWDS were attributed to similar variation patterns in the surface water level. The results confirm the AWD's performance as a mitigation option for paddy GHG emission in Central Vietnam. ARTICLE HISTORY

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Section: The Magnitude Of Ghg Emission In This Sitesupporting

confidence: 92%

Impacts of alternate wetting and drying on greenhouse gas emission from paddy field in Central Vietnam

Tran

Hoang

Tokida

et al. 2017

Soil Science and Plant Nutrition

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“…The effects of organic materials on methane emissions was also studied by Khosa et al [48]. The research measured the emission levels from straw, farmyard manure, green manure, and rice-straw amended plots over two farming seasons.…”

Section: Optimization Of Fertilizer Applicationmentioning

confidence: 99%

Rice Cultivation and Greenhouse Gas Emissions: A Review and Conceptual Framework with Reference to Ghana

2017

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Abstract:Rice is an essential crop in Ghana. Several aspects of rice have been studied to increase its production; however, the environmental aspects, including impact on climate change, have not been studied well. There is therefore a gap in knowledge, and hence the need for continuous research. By accessing academic portals, such as Springer Open, InTech Open, Elsevier, and the Kwame Nkrumah University of Science and Technology's offline campus library, 61 academic publications including peer reviewed journals, books, working papers, reports, etc. were critically reviewed. It was found that there is a lack of data on how paddy rice production systems affect greenhouse gas (GHG) emissions, particularly emissions estimation, geographical location, and crops. Regarding GHG emission estimation, the review identified the use of emission factors calibrated using temperate conditions which do not suit tropical conditions. On location, most research on rice GHG emissions have been carried out in Asia with little input from Africa. In regard to crops, there is paucity of in-situ emissions data from paddy fields in Ghana. Drawing on the review, a conceptual framework is developed using Ghana as reference point to guide the discussion on fertilizer application, water management rice cultivars, and soil for future development of adaptation strategies for rice emission reduction.

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“…Methane emissions were higher also on fields that were flooded during the fallow period, than on fields that were kept dry or were dried and tilled. Cumulative methane emissions, averaged over all fallow management treatments, were about twice as large on the fields with incorporated residue, than on those from which the residue had been removed [200]. The sum of methane emissions across both seasons was smaller for the dry and dry + tillage treatments, than for the flooded treatment.…”

Section: Soil Amendments and Tillagementioning

confidence: 91%

“…Sander et al [200] examined water management and tillage treatments between the wet and dry season rice crops on an experiment station in Los Baños, Philippines. The treatments included continuous soil flooding (flooded), soil drying by excluding rainfall (dry), and soil drying, with two tillage events (dry + tillage).…”

Section: Soil Amendments and Tillagementioning

confidence: 99%

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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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Methane and nitrous oxide emissions from flooded rice fields as affected by water and straw management between rice crops

Cited by 122 publications

References 31 publications

Impacts of alternate wetting and drying on greenhouse gas emission from paddy field in Central Vietnam

Impacts of alternate wetting and drying on greenhouse gas emission from paddy field in Central Vietnam

Rice Cultivation and Greenhouse Gas Emissions: A Review and Conceptual Framework with Reference to Ghana

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

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