Unexpected high reduction of methane emission via short-term aerobic pre-digestion of green manured soils before flooding in rice paddy

Lee, Jin Ho; Park, Mun Hyeong; Song, Hyeon Ji; Kim, Pil Joo

doi:10.1016/j.scitotenv.2019.134641

Cited by 17 publications

(7 citation statements)

References 29 publications

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“…The combination of soil bacteria, metabolomics analysis, soil enzyme activities, and chemical properties can provide comprehensive insight into the advantages of the application of GMs in peanut continuous cropping systems. However, the risks and disadvantages of GMs may also appear, including the additional costs and labor requirements for establishment and regular maintenance, the increased risk of spring frost and crop damage from increased rodent populations, as well as the production of more soil greenhouse gas (such as CH 4 , CO 2 , and N 2 O emissions) [ 53 , 54 ]. How to give full play to advantages and avoid disadvantages need to be further study.…”

Section: Discussionmentioning

confidence: 99%

Green manure increases peanut production by shaping the rhizosphere bacterial community and regulating soil metabolites under continuous peanut production systems

Ding

Zhang

et al. 2023

BMC Plant Biol

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Background Green manure (GM) is a crop commonly grown during fallow periods, which has been applied in agriculture as a strategy to regulate nutrient cycling, improve organic matter, and enhance soil microbial biodiversity, but to date, few studies have examined the effects of GM treatments on rhizosphere soil bacterial community and soil metabolites from continuous cropping peanut field. Results: In this study, we found that the abundances of several functionally significant bacterial groups containing Actinobacteria, Acidobacteria, and genus Sphingomonas, which are associated with nitrogen cycling, were dramatically increased in GM-applied soils. Consistent with the bacterial community results, metabolomics analysis revealed a strong perturbation of nitrogen- or carbon-related metabolisms in GM-applied soils. The substantially up-regulated beneficial metabolites including sucrose, adenine, lysophosphatidylcholine (LPC), malic acid, and betaines in GM-applied soils may contribute to overcome continuous cropping obstacle. In contrast to peanut continuous cropping, planting winter wheat and oilseed rape in winter fallow period under continuous spring peanut production systems evidently improved the soil quality, concomitantly with raised peanut pod yield by 32.93% and 25.20%, in the 2020 season, respectively. Conclusions: GMs application is an effective strategy to overcome continuous cropping obstacle under continuous peanut production systems by improving nutrient cycling, soil metabolites, and rhizobacterial properties.

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Section: Discussionmentioning

confidence: 99%

Green manure increases peanut production by shaping the rhizosphere bacterial community and regulating soil metabolites under continuous peanut production systems

Ding

Zhang

et al. 2023

BMC Plant Biol

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“…However, fresh biomass application also provides large amounts of readily available organic C substrates for methanogens and thus strongly increases CH 4 emission in flooded rice fields (Conrad, 2007;Yang et al, 2010;Li et al, 2013;Kim et al, 2015;Hwang et al, 2017;Lee et al, 2020b;Song et al, 2021). Cover crop biomass incorporation increased the annual CH 4 flux by 2.6-4.2 times over that of chemical fertilization within the rice cropping boundary (Table 5).…”

Section: Effect Of Green Manure Management On Global Warming Potentia...mentioning

confidence: 99%

“…Interestingly, short-term aerobic predigestion of biomass applied to soils before irrigation strongly reduced CH 4 emission during rice cultivation (Table 6) (Lee et al, 2020b;Song et al, 2021). Since the same biomass was applied at different time intervals before irrigation for rice cultivation, aerobic decomposition of labile organic C substrates under dried soil conditions might effectively mitigate CH 4 emission during flooded rice cultivation.…”

Section: Effect Of Green Manure Management On Global Warming Potentia...mentioning

confidence: 99%

Agricultural practices to improve soil carbon sequestration in rice paddy soils

Song¹,

Kim²

2022

Burleigh Dodds Series in Agricultural Science

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Paddy rice systems are characterized by waterlogged conditions with high potential for CH4 emissions and soil organic carbon (SOC) sequestration. Therefore, it is necessary to evaluate the net global warming potential (GWP) of soil management considering SOC stock changes, and CH4 and N2O fluxes. Green manure application and straw retention slightly enhanced SOC stock, but highly increased net GWP due to high CH4 emissions. Aerobic pre-digestion of organic matter amended soils and water drainage during cropping are practices which significantly decrease net GWP. Moreover, silicate fertilizers with electron acceptors like oxidized iron and manganese also decrease net GWP. Biochar rather than compost as a stable organic amendment significantly increases SOC while decreasing net GWP. In conclusion, the combined management of organic amendments, aerobic pre-digestion, water drainage, and fertilizers could be a promising way to mitigate greenhouse gas emissions and favor C sequestration in rice paddies.

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“…일부 선행 연구에서 분출에 의한 메탄 방출을 조사하였는데 (Green, 2013;Tokida et al, 2013;Kajiura and Tokida, 2021), 벼를 포함한 전체 메탄 방출에 대한 분출을 통한 메탄 방출 비율은 유수형성기에는 26 -45%, 출수기에는 60 -68%로 매우 높은 수준으로 보고된 바 있다 (Tokida et al, 2013). 하지만, Tokida et al (2013) (Gwon et al, 2019;Lee et al, 2020b). 특히, 기온 상승 조건에서 벼의 분얼수가 증 가하고 생체량이 증가하여 뿌리 삼출물이 많아지면 메탄 생성량이 증가하는 것으로 보고된 바 있다 (Sass et al, 1990).…”

Section: Introductionunclassified

Methane emission from soil surface during rice growth season under different temperature, fertilization, and rice straw input conditions

Shin,

Baek,

Park

et al. 2024

Korean J. Soil. Sci. Fert.

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Rice (Oryza sativa L.) fields are major sources of methane (CH 4 ) which is the second most important greenhouse gas after carbon dioxide. Methane is known to be released mainly through aerenchyma tissues of rice plants; however, CH 4 is also released from soil surface through ebullition and diffusion. However, little information is available for CH 4 emission directly from soil surface (MDFS). In this study, in order to enlarge our understanding of CH 4 emission from rice paddy fields, we investigated MDFS under different rice growth conditions such as temperature, fertilization, and rice straw input. Rice was cultivated using pots with different fertilization regime (chemical fertilizer vs. organic fertilizer + manure compost) with or without rice straw input under ambient or elevated (+3°C) temperature. Methane emissions from rice plants (including MDFS) and MDFS alone without rice plants were measured three times before mid-season drainage (MSD), in the course of MSD, and after MSD. The MDFS flux and its contribution to the total CH 4 emissions was not affected by temperature, fertilization, and rice straw inputs across the rice growing season. The mean total CH 4 flux and MDFS flux were 20.7 mg m -2 hr -1 and 0.22 mg m -2 hr -1 , respectively, and thus the portion of MDFS to total CH 4 emission was about 1%. However, MDFS flux in the early rice season increased by rice straw input and MDFS accounted for 5% of total CH 4 emission, probably due to increased CH 4 production by rice straw inputs at higher levels than the capacity of aerenchyma tissue to intake and transport the CH 4 produced in the early rice season with low tiller number. Our result indicate that MDFS may substantially contribute to the total CH 4 emission in the early season of rice cultivation with organic inputs.

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Unexpected high reduction of methane emission via short-term aerobic pre-digestion of green manured soils before flooding in rice paddy

Cited by 17 publications

References 29 publications

Green manure increases peanut production by shaping the rhizosphere bacterial community and regulating soil metabolites under continuous peanut production systems

Green manure increases peanut production by shaping the rhizosphere bacterial community and regulating soil metabolites under continuous peanut production systems

Agricultural practices to improve soil carbon sequestration in rice paddy soils

Methane emission from soil surface during rice growth season under different temperature, fertilization, and rice straw input conditions

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