Potential methane emission reduction strategies from rice cultivation systems in Bangladesh: A critical synthesis with global meta-data

Saha, Milton Kumar; Mia, Shamim; Biswas, Akm Abdul Ahad; Sattar, Abdus; Kader, M. Abdul; Jiang, Zhixiang

doi:10.1016/j.jenvman.2022.114755

Cited by 16 publications

(6 citation statements)

References 58 publications

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“…Literature (Belenguer-Manzanedo et al 2022;Gupta et al 2021) suggests that 30% CH 4 and 11% N 2 O of global agricultural emissions are from rice fields. Nonetheless, rice cultivation can present large GHG emission removal with simple changes and appropriate management systems (Islam et al 2022;Saha et al 2022). Rice contributed the largest abatement potential in this study, partly because rice was cultivated under rain-fed conditions.…”

Section: Discussionmentioning

confidence: 85%

“…Rice contributed the largest abatement potential in this study, partly because rice was cultivated under rain-fed conditions. Rice cultivated under continuous flooding releases larger amounts of emissions due to anaerobic conditions in the soil, which can greatly increase under long-term inundation (Saha et al 2022). Less continuous flooding of rice paddies was observed at the CSVs due to limited irrigation facilities.…”

Section: Discussionmentioning

confidence: 99%

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Climate-smart agriculture: Greenhouse gas mitigation in climate-smart villages of Ghana

Anuga

Fosu-Mensah

Nukpezah

et al. 2022

Environmental Sustainability

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Climate-smart agriculture (CSA) is an approach that helps guide actions to transform agri-food systems towards green and climate-resilient practices and it remains prominent in food systems transformation in the light of increasing climate change impacts. Unfortunately, the quantification of the greenhouse gas (GHG) mitigation potential of CSA approaches is currently limited. Using the Cool Farm Tool (CFT), this paper quantifies the GHG mitigation of CSA based on farm-level experimental data. Individual interviews and focus group discussions were also conducted to identify farmers’ choices and willingness to adopt CSA practices. The study compared the GHG emission mitigation of CSA practices for two scenarios (baseline and mitigation). The study found that organic fertilizer input, residue incorporation, no-inorganic fertilizer and no-pesticide input reduced GHG emission intensity of sorghum (to 93.2 ± 25 kg CO2e GHG kg− 1 sorghum), rice (79.2 ± 22 kg CO2e GHG kg− 1 rice) and groundnut (69.7 ± 20 kg CO2e GHG kg− 1 groundnut) compared to the baseline. Lower GHG emission intensity was achieved with higher crop yield under CSA interventions. The study recommends that CSA promoters such as the Consultative Group for International Agriculture Research (CGIAR), Food and Agriculture Organization (FAO) and the World Bank focus on crop-specific CSA practices for higher GHG mitigation. CSA promoters such as the CGIAR, FAO and the World Bank should embrace participatory processes such as farmer schools to increase CSA uptake.

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Section: Discussionmentioning

confidence: 85%

Section: Discussionmentioning

confidence: 99%

Climate-smart agriculture: Greenhouse gas mitigation in climate-smart villages of Ghana

Anuga

Fosu-Mensah

Nukpezah

et al. 2022

Environmental Sustainability

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“…Our results paint a concerning picture: there's a palpable risk that increased CH 4 emissions in subsequent years could negate the positive CO 2 − eq reductions witnessed so far. Currently, multiple studies highlight strategies like ammonium sulfate 26,27 , nitri cation inhibitors 26,28,29 , nitrogen slow-release fertilizers [30][31][32] , and deep fertilizer application 33,34 as effective means to reduce CH 4 emissions. For a lasting impact of biochar on CH 4 mitigation, emphasis should also be laid on enhancing biochar stability and bolstering aerobic methanotrophic activity.…”

Section: Ch 4 Emission and Mitigation With Biochar Ageingmentioning

confidence: 99%

Recycling annual self-straw as biochar reduces long-term greenhouse gas emissions from paddy fields economically

Wu,

Nan,

Speth

et al. 2024

Preprint

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Paddy fields contribute significantly to agricultural greenhouse gas (GHG) emissions, and their mitigation is imperative for achieving global carbon neutrality. The commonly adopted practice of a one-time application of approximately 1% topsoil weight biochar (high single, HS) has proven effective in reducing GHG emissions from paddy fields. However, the long-term efficacy of this approach remains uncertain. Our comprehensive 8-year field experiments reveal that the HS method substantially reduces 125 tonnes of CO2-eq per hectare, accompanied by a net financial benefit of US$ 3,732 per hectare. Nevertheless, the HS method exhibits diminishing returns as biochar aged. This decline is attributed to the higher soil ammonium concentration, which hinders methanotrophic activity and reduces soil total carbon content. To counteract this ageing effect, a more sustainable alternative known as the annual low (AL) method involves the yearly recycling of biochar. The AL method surpasses the HS approach, recording a reduction of 197 tonnes of CO2-eq per hectare and a net financial benefit of US$ 4,568 per hectare. This represents a 58% increase in CO2 reduction and a 16% increase in financial benefit compared to the HS method. If the AL method were implemented globally in paddy fields, it could remarkably reduce 4 billion tonnes of CO2-eq GHG, yielding an annual financial benefit of US$ 90 billion. This underscores the viability and economic attractiveness of adopting sustainable practices in paddy field management aligned with the Sustainable Development Goals.

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“…Under anaerobic conditions, methanogenic bacteria decompose organic matter, resulting in the production of methane. Agricultural practices, especially irrigation and organic matter management, can significantly influence methane emissions from rice cultivation [54][55][56].…”

Section: 2) Greenhouse Gas (Ghg) Emissionmentioning

confidence: 99%

The Effect of Irrigation Techniques on Sustainable Water Management for Rice Cultivation System - A Review

Wichaidist,

Intrman,

Puttrawutichai

et al. 2023

App. Envi. Res.

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Rice serves as a fundamental sustenance for approximately half of the global population, particularly in Asia. Nevertheless, the cultivation of rice demands a substantial water supply, and the challenges associated with water deficits have been exacerbated by irregular rainfall patterns induced by global warming. Consequently, there is a critical need to reassess irrigation techniques to effectively tackle these issues. In this comprehensive review, the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) method was employed to systematically explore literature on irrigation techniques aimed at fostering sustainable water management in rice cultivation systems. The primary components of the framework encompass water consumption and water-related characteristics, soil-related characteristics, and plant-related characteristics, encompassing relevant components and indicators. Two alternative irrigation methods, namely alternate wetting and drying (AWD) and saturated soil irrigation (SSI), have been proposed to enhance water use efficiency (WUE) in rice cultivation compared to traditional continuous flooding (CF). These alternative irrigation methods do not adversely affect rice yield, both quantitatively and qualitatively. Furthermore, these alternative irrigation approaches have the potential to mitigate greenhouse gas (GHG) emissions, particularly methane emissions, in rice production. This review underscores the significance of data on alternate irrigation systems, providing valuable insights for researchers and policymakers in formulating strategies that align at every level for practical implementation. This is crucial as it is relevant to multiple organizations and stakeholders. Moreover, in the face of inclement weather conditions resulting from climate change, the study's findings indicate that research on farmers' adaptation, plant stress, and resilience within the rice cultivation system is still in its nascent stages. This highlights the pressing need for further exploration and advancement in these areas to develop effective strategies for coping with the challenges posed by climate change.

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Potential methane emission reduction strategies from rice cultivation systems in Bangladesh: A critical synthesis with global meta-data

Cited by 16 publications

References 58 publications

Climate-smart agriculture: Greenhouse gas mitigation in climate-smart villages of Ghana

Climate-smart agriculture: Greenhouse gas mitigation in climate-smart villages of Ghana

Recycling annual self-straw as biochar reduces long-term greenhouse gas emissions from paddy fields economically

The Effect of Irrigation Techniques on Sustainable Water Management for Rice Cultivation System - A Review

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