Understanding Methanogens, Methanotrophs, and Methane Emission in Rice Ecosystem

Malyan, Sandeep K.; Kumar, Smita S.; Kumar, Om Prakash; Gupta, Dipak Kumar; Yadav, Ajar Nath; Fagodiya, Ram Kishor; Khan, Shumaila; Kumar, Amit

doi:10.1007/978-981-33-4508-9_12

Cited by 6 publications

(3 citation statements)

References 115 publications

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“…Methane is produced by methanogenic bacteria/archaea (methanogens) as the end product of organic matter decomposition under anaerobic conditions [104,105]. Under an anaerobic atmosphere, methanogens utilize the methanogenic substrates (methanol, formate, acetate, and CO 2 ) produced due to organic matter decomposition by a range of heterotrophic organisms (Figure 4) [13].…”

Section: Methane Emissionsmentioning

confidence: 99%

Greenhouse Gas Emissions from Salt-Affected Soils: Mechanistic Understanding of Interplay Factors and Reclamation Approaches

et al. 2022

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Salt-affected soils contain high levels of soluble salts (saline soil) and exchangeable sodium (alkali soil). Globally, about 932 million ha (Mha), including 831 Mha of agricultural land, is salt-affected. Salinity and sodicity adversely affect soil microbial diversity and enzymatic activities, and thereby carbon and nitrogen dynamics and greenhouse gas (GHG) emissions from soils. In this review article, we synthesize published information to understand the impact of salinity and sodicity on GHG production and emissions from salt-affected soils, and how various reclamation amendments (gypsum, phosphogypsum, organic manure, biochar, etc.) affect GHG emissions from reclaimed soils. Nitrous oxide (N2O) and methane (CH4) emissions are of greater concern due to their 298 and 28 times higher global warming potential, respectively, compared to carbon dioxide (CO2), on a 100-year time scale. Therefore, CO2 emissions are given negligible/smaller significance compared to the other two. Generally, nitrous oxide (N2O) emissions are higher at lower salinity and reduced at higher salinity mainly due to: (a) higher ammonification and lower nitrification resulting in a reduced substrate for denitrification; (b) reduced diversity of denitrifying bacteria lowered down microbial-mediated denitrification process; and (c) dissimilatory nitrate reduction to ammonium (DNRA), and denitrification processes compete with each other for common substrate/nitrate. Overall, methane (CH4) emissions from normal soils are higher than those of salt-affected soils. High salinity suppresses the activity of both methanogens (CH4 production) and methanotrophs (CH4 consumption). However, it imposes more inhibitory effects on methanogens than methanotrophs, resulting in lower CH4 production and subsequent emissions from these soils. Therefore, reclamation of these soils may enhance N2O and CH4 emissions. However, gypsum is the best reclamation agent, which significantly mitigates CH4 emissions from paddy cultivation in both sodic and non-sodic soils, and mitigation is higher at the higher rate of its application. Gypsum amendment increases sulfate ion concentrations and reduces CH4 emissions mainly due to the inhibition of the methanogenesis by the sulfate reductase bacteria and the enhancement of soil redox potential. Biochar is also good among the organic amendments mitigating both CH4 and N2O emission from salt-affected soils. The application of fresh organic matter and FYM enhance GHG emissions for these soils. This review suggests the need for systematic investigations for studying the impacts of various amendments and reclamation technologies on GHG emissions in order to develop low carbon emission technologies for salt-affected soil reclamation that can enhance the carbon sequestration potential of these soils.

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Section: Methane Emissionsmentioning

confidence: 99%

Greenhouse Gas Emissions from Salt-Affected Soils: Mechanistic Understanding of Interplay Factors and Reclamation Approaches

et al. 2022

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“…The contemporary landscape of agribusiness is marked by a complex interplay between technology adoption, farmer training, market access, and crop yielda nexus that stands as a linchpin influencing the sustainability and productivity of agricultural systems worldwide (Kumaraswamy & Kunte, 2013;Peng, 2012). With a burgeoning global population and the specter of climate change altering traditional paradigms, the imperative to enhance agricultural efficiency and resilience has never been more critical (Kumaraswamy & Kunte, 2013;Malyan et al, 2021;Zhang et al, 2021). This research embarks on a comprehensive exploration to dissect the multifaceted relationships among these pivotal factors, unraveling the intricate dynamics that govern the modern agricultural ecosystem.…”

Section: Introductionmentioning

confidence: 99%

Analyzing the Interplay of Technology Adoption, Farmer Training, Market Access, and Crop Yield: A Quantitative Survey in Agribusiness

Rusmayadi,

Salawati,

Widi

et al. 2024

IJBLE

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This research delves into the intricate interplay of Technology Adoption (TA), Farmer Training (FT), Market Access (MA), and Crop Yield (CY) within the contemporary agribusiness landscape. With the global population burgeoning and climate change reshaping traditional paradigms, the need to enhance agricultural efficiency and resilience is paramount. Through a quantitative survey and Partial Least Squares Structural Equation Modeling (PLS SEM) analysis, the study explores the relationships among these pivotal factors. The findings underscore the significant impact of technology adoption, farmer training, and market access on crop yield, supported by established theories. The diverse respondent demographic, methodological rigor, and hypothesis testing further fortify the study's credibility. This research not only contributes to academic knowledge but also provides practical insights for policymakers and industry stakeholders, fostering a harmonious integration of key elements to enhance agribusiness sustainability.

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“…As the host plant of the silks grows in the aerobic soil, thus the emission of the methane is not possible (Malyan et al, 2022). Even though, the methanotrophs are active in aerobic soil and consumes some amount of the atmospheric methane (Malyan et al, 2021). However, the applied farm yard manure is the output of livestock sector, therefore having methane emission credits due to enteric fermentation.…”

Section: Introductionmentioning

confidence: 99%

Sericulture: Prospect to Address the Global Challenges of Climate Change and Microplastic in Textile Sector

Kumar¹,

Shabnam²,

Babulal³

2022

PLANT ARCHIVES

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The climate change and microplastic are the two important global concerns, which are well accepted by global fraternity. The textile industry is also having direct concern under the changing environmental condition and polluted environment. Some studies proclaim the negative effects of the sericulture on environment without considering the complete cycle of the sink and source. By looking into deep through pro-active research in soil-to-soil approach, it is possible to establish that sericulture is having the intrinsic capacity to reduce the global burden of the global warming as well as the microplastic pollution. Some initial attempts were already taken in this direction but the synchronised continuous attempts are essentially the need of the hour. In this study, the available research outputs and respective research gaps through systematic pro-active research and institutional pathways are discussed towards achieving the carbon neutrality and sustainability in silk production and sericulture research.

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Understanding Methanogens, Methanotrophs, and Methane Emission in Rice Ecosystem

Cited by 6 publications

References 115 publications

Greenhouse Gas Emissions from Salt-Affected Soils: Mechanistic Understanding of Interplay Factors and Reclamation Approaches

Greenhouse Gas Emissions from Salt-Affected Soils: Mechanistic Understanding of Interplay Factors and Reclamation Approaches

Analyzing the Interplay of Technology Adoption, Farmer Training, Market Access, and Crop Yield: A Quantitative Survey in Agribusiness

Sericulture: Prospect to Address the Global Challenges of Climate Change and Microplastic in Textile Sector

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