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 14 publications

(4 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

Understanding and Fostering Soil Carbon Sequestration

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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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“…양질의 유기물을 공급하기 위해서는 농업생산과정에서 나오는 부산물의 투입량을 증대 및 휴경기 피복작물 재배 등을 통해 토양 내 바이오매스 환원량을 극대화시키는 토양 관리 방안이 필요하다. 동시에 투입 되는 유기물을 퇴비화 (Kim et al, 2014(Kim et al, , 2018Jeong et al, 2019), 바이오차 (Zhang et al, 2010;Park et al, 2021), 사전부숙 (Lee et al, 2020a;Song et al, 2021) 등 안정화 기술을 적용함으로써 토양으로 투입된 이후의 분해량을 최 소화시킴으로서 농경지에서 토양유기물 함량을 지속적으로 증진시켜 나갈 수 있다.…”

Section: Introductionunclassified

Characteristics of Distribution and Decomposition of Organic Matter in Soils Cultivated with Various Fruits and Vegetables in Plastic Film House Fields

Lee

Choi

et al. 2021

Korean J. Soil. Sci. Fert.

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Enhancing soil carbon sequestration potential is one of the most important strategies to contribute to climate change mitigation. However, basic characteristics of soil organic matter (SOM) distribution and its decomposition rate in soils where fruits and vegetables are cultivated have rarely been investigated though this information is necessary for a better understanding of carbon sequestration. In this study, soil samples were collected from plastic film house fields cultivated for various fruits and vegetables including cucumber, Korean melon, pepper, and pumpkin. Soil chemical properties including characteristics of SOM distribution by chemical oxidizable organic fractions, and their decomposition rates by estimating soil respiration rate (Q 10 value) via soil incubation were evaluated. Total carbon content in pepper soil showed highest (28.7 g kg -1 ) and followed by pumpkin (23.9 g kg -1 ), cucumber (17.6 g kg -1 ), and Korean melon (11.8 g kg -1 ). Highest Q 10 value was observed in pepper cultivated soils (1.65) that could be comparatively sensitive for SOM degradation, and then followed by cucumber (1.42), pumpkin (1.36), and Korean melon (0.82). Labile carbon as easily available form was highest in pepper cultivated soils (20.7 g kg -1 ), and followed by pumpkin (18.0 g kg -1 ), cucumber (14.6 g kg -1 ), and Korean melon (9.9 g kg -1 ), showing significantly positive correlations with soil total and labile carbons. Our results provided useful information on SOM distribution and decomposition, which is necessary to manage and thus to further enhance carbon sequestration in soils.

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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 14 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

Characteristics of Distribution and Decomposition of Organic Matter in Soils Cultivated with Various Fruits and Vegetables in Plastic Film House Fields

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