Effect of mid-season drainage on CH4 and N2O emission and grain yield in rice ecosystem: A meta-analysis

Liu, Xiaoyu; Zhou, Tong; Liu, Yuan; Zhang, Xuhui; Li, Lianqing; Pan, Genxing

doi:10.1016/j.agwat.2018.12.025

Cited by 60 publications

(47 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A recent meta-analysis [9] reported a 105% increase in N 2 O emission with non-continuous flooding management rather than continuous flooding. Similarly, midseason drainage and N application significantly increased the N 2 O emissions from the paddy [11]. Another meta-analysis, based on the comparison between flooding irrigation and non-flooding irrigation (reduced irrigation with midseason drainage) and N fertilizer input, showed an increase in N 2 O emission of 84.4% and 167.3%, respectively [8].…”

Section: Introductionmentioning

confidence: 95%

“…Thus, it is necessary to understand the mechanisms of N 2 O production in the paddy for necessary steps to be taken towards mitigation strategies for the global warming effect. N 2 O in the paddy is emitted by the soil [10,11] and the rice plant [12,13]. The processes involved in the soil are well studied [10,11].…”

Section: Introductionmentioning

confidence: 99%

“…N 2 O in the paddy is emitted by the soil [10,11] and the rice plant [12,13]. The processes involved in the soil are well studied [10,11]. However, processes involving the plant are overlooked and the N 2 O emitted by the rice plants in paddies is considered to be produced by soil microorganisms, with the rice plant hypothesized to act as a channel to emit it into the atmosphere [12,13].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nitrous Oxide Emissions from Paddies: Understanding the Role of Rice Plants

Timilsina

Bizimana

Pandey

et al. 2020

Plants

View full text Add to dashboard Cite

Paddies are a potential source of anthropogenic nitrous oxide (N2O) emission. In paddies, both the soil and the rice plants emit N2O into the atmosphere. The rice plant in the paddy is considered to act as a channel between the soil and the atmosphere for N2O emission. However, recent studies suggest that plants can also produce N2O, while the mechanism of N2O formation in plants is unknown. Consequently, the rice plant is only regarded as a channel for N2O produced by soil microorganisms. The emission of N2O by aseptically grown plants and the distinct dual isotopocule fingerprint of plant-emitted N2O, as reported by various studies, support the production of N2O in plants. Herein, we propose a potential pathway of N2O formation in the rice plant. In rice plants, N2O might be formed in the mitochondria via the nitrate–nitrite–nitric oxide (NO3–NO2–NO) pathway when the cells experience hypoxic or anoxic stress. The pathway is catalyzed by various enzymes, which have been described. So, N2O emitted from paddies might have two origins, namely soil microorganisms and rice plants. So, regarding rice plants only as a medium to transport the microorganism-produced N2O might be misleading in understanding the role of rice plants in the paddy. As rice cultivation is a major agricultural activity worldwide, not understanding the pathway of N2O formation in rice plants would create more uncertainties in the N2O budget.

show abstract

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nitrous Oxide Emissions from Paddies: Understanding the Role of Rice Plants

Timilsina

Bizimana

Pandey

et al. 2020

Plants

View full text Add to dashboard Cite

show abstract

“…The increase in productive tiller could have increased the grain mass [22]. Liu, et al [10] reported mid-season drainage did not affect rice yield. However, the rice yield was significantly affected by soil organic carbon (SOC), total nitrogen (TN), C:N ratio, and N fertilizer application.…”

Section: Relative Yieldsmentioning

confidence: 99%

“…Therefore, an alternative resource-conservation system that has minimal effect on ecosystem health is required. Alternative wetting and drying (AWD) [4,[7][8][9] and single mid-season drying (SMD) [10,11] are commonly practiced alternative water-saving practices adopted in the rice production system. Under AWD, fields are subjected to alternate wet and dry rather than continuous flooding.…”

Section: Introductionmentioning

confidence: 99%

Effects of Water Management Strategies and Nitrogen Fertilizer on Rice Yield Cultivated on Histosols

R¹,

Rabbany²,

Salvador³

et al. 2021

J Rice Res Dev

View full text Add to dashboard Cite

Multiyear methane and nitrous oxide emissions in different irrigation management under long‐term continuous rice rotation in Arkansas

et al. 2023

View full text Add to dashboard Cite

Rice paddies are one of the major sources of anthropogenic methane (CH 4 ) emissions. The alternate wetting and drying (AWD) irrigation management has been shown to reduce CH 4 emissions and total global warming potential (GWP) (CH 4 and nitrous oxide [N 2 O]). However, there is limited information about utilizing AWD management to reduce greenhouse gas (GHG) emissions from commercial-scale continuous rice fields. This study was conducted for five consecutive growing seasons (2015-2019) on a pair of adjacent fields in a commercial farm in Arkansas under long-term continuous rice rotation irrigated with either continuously flooded (CF) or AWD conditions. The cumulative CH 4 emissions in the growing season across the two fields and 5 years ranged from 41 to 123 kg CH 4 -C ha −1 for CF and 1 to 73 kg CH 4 -C ha −1 for AWD. On average, AWD reduced CH 4 emissions by 73% relative to CH 4 emissions in CF fields. Compared to N 2 O emissions, CH 4 emissions dominated the GWP with an average contribution of 91% in both irrigation treatments. There was no significant variation in grain yield (7.3-11.9 Mg ha −1 ) or growing season N 2 O emissions (−0.02 to 0.51 kg N 2 O-N ha −1 ) between the irrigation treatments. The yield-scaled GWP was 368 and 173 kg CO 2 eq. Mg −1 season −1 for CF and AWD, respectively, showing the feasibility of AWD on a commercial farm to reduce the total GHG emissions while sustaining grain yield. Seasonal variations of GHG emissions observed within fields showed total GHG emissions were predominantly influenced by weather (precipitation) and crop and irrigation management. The influence of air temperature and floodwater heights on GHG emissions had high degree of variability among years and fields. These findings demonstrate that the use of multiyear GHG emission datasets could better capture variability of GHG emissions associated with rice production and could improve field verification of GHG emission models and scaling factors for commercial rice farms.

show abstract

Effect of mid-season drainage on CH4 and N2O emission and grain yield in rice ecosystem: A meta-analysis

Cited by 60 publications

References 24 publications

Nitrous Oxide Emissions from Paddies: Understanding the Role of Rice Plants

Nitrous Oxide Emissions from Paddies: Understanding the Role of Rice Plants

Effects of Water Management Strategies and Nitrogen Fertilizer on Rice Yield Cultivated on Histosols

Multiyear methane and nitrous oxide emissions in different irrigation management under long‐term continuous rice rotation in Arkansas

Contact Info

Product

Resources

About