Strong mitigation of greenhouse gas emission impact via aerobic short pre-digestion of green manure amended soils during rice cropping

Song, Hyeon Ji; Lee, Jin Ho; Canatoy, Ronley C.; Lee, Jeong Gu; Kim, Pil Joo

doi:10.1016/j.scitotenv.2020.143193

Cited by 29 publications

(16 citation statements)

References 45 publications

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“…Compared to ryegrass, milk vetch (milk vetch) is more likely to complete the decomposition process during the buffering period, as the former may contain hardly degradable matter such as lignin. Song et al (2021) also pointed out that aerobic short pre-digestion (pre-treatment) for green manure mixed with soil is an effective strategy to reduce the GHG emissions from paddies as pathways to methane may change due to presence of more 'unconventional' electron acceptors (i.e. iron, sulphate etc.…”

Section: Ch4 Emissionsmentioning

confidence: 99%

Continuous milk vetch amendment in rice-fallow rotation improves soil fertility and maintains rice yield without increasing CH4 emissions: Evidence from a long-term experiment

Hou

Xue

Wang

et al. 2022

Agriculture, Ecosystems & Environment

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Section: Ch4 Emissionsmentioning

confidence: 99%

Continuous milk vetch amendment in rice-fallow rotation improves soil fertility and maintains rice yield without increasing CH4 emissions: Evidence from a long-term experiment

Hou

Xue

Wang

et al. 2022

Agriculture, Ecosystems & Environment

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“…In addition to reducing CH 4 emissions by changing the types of green manure and fertilization methods, Song et al [78] discovered that aerobic short pre-digestion (10-20 d) before green manure return can significantly reduce CH 4 flux during rice planting (55-80%), and the underlying mechanism is to convert exogenous unstable carbon into CO 2 with a lower warming potential through aerobic digestion, thereby reducing CH 4 emissions. However, during the fallow stage of the paddy field, with the extension of the short aerobic pre-digestion period, N 2 O emissions from the paddy field can be significantly increased.…”

Section: Ch 4 Emissionsmentioning

confidence: 99%

“…During the flooding period of rice, extremely reducing conditions inhibited nitrification, resulting in denitrification being more marked for N 2 than for N 2 O or NO [78].…”

Section: N 2 O Emissionsmentioning

confidence: 99%

Ecological and Environmental Benefits of Planting Green Manure in Paddy Fields

2022

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Soil fertility management is one of the most important factors affecting crop production. The use of organic manures, including green manure, is an important strategy to maintain and/or improve soil fertility for sustainable crop production. Green manure generally refers to crops that can provide fertilizer sources for agricultural cash crops and improve soil productivity. The application of green manure is a traditional and valuable practice for agroecosystem management, particularly in paddy systems where green manure is rotated with rice. This paper systematically reviews the effects of green manure on soil microenvironments and greenhouse gas emissions, and the role of green manure in the phytoremediation of paddy fields. The paper concludes that green manure can not only affect soil nutrients and the microbial community, but also reduce greenhouse gas emissions and enhance soil remediation to some extent. Moreover, this review provides theoretical guidance on the selection of green manure germplasm and tillage methods for paddy fields of different climates and textures. However, this review only provides a macro-overview of the effects of green manure on soil nutrients, greenhouse gas emissions, and soil remediation in rice paddies based on a large number of previous studies, and does not provide a comprehensive quantitative assessment due to differences in green manure varieties and soil texture. The prospects for quantitative analysis of the ecological and economic effects of the sustainable development of green manure cultivation are discussed.

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“…Chemical fertilizer combined with MV has advantages in increasing total N and mineral N, and altered soil microbial community structure compared to single chemical fertilizer (Zhou et al 2020). Green manure plays a key role in mitigating greenhouse gas emission (Kopittke et al 2020;Song et al 2021), reducing chemical fertilizer applications (Zhou et al 2020), increasing soil organic carbon (SOC) stock (Yao et al 2019; Khan et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Effects of substitution of chemical fertilizer by Chinese milk vetch on distribution and composition of aggregates-associated organic carbon fractions in paddy soils

Nie

Geng

et al. 2022

Plant Soil

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Green manure plays a key role in reducing chemical fertilizer applications and increasing soil organic carbon (SOC) stock. The effects of chemical fertilizer substitution by Chinese milk vetch (MV) on the distribution and composition of organic carbon fractions in macroaggregates and microaggregates and SOC stability mechanism were investigated in a paddy soil in southern China. A 11-year (2008-2018) eld experiment was conducted, including no fertilizer (CK), 100% NPK fertilizer (F100), MV with different percentages of chemical fertilizer (MV + F100, MV + F80, MV + F60 and MV + F40). The soil was separated into distinct organic carbon fractions using aggregate density fractionation and SOC chemical structure was analyzed by fourier-transform infrared and nuclear magnetic resonance. Methods ResultsChemical fertilizer substitution by MV increased SOC contents in the bulk soil by 9.07% (MV + F80), 5.08% (MV + F60), 17.93% (MV + F40) compared to F100. Organic carbon fraction mainly existed in mSOC, accounting for 70.28-83.70% and 69.43-83.97% of the relative mass of macroaggregates and microaggregates, respectively. Compared to F100, aromatic C increased by 11.59% and 29.06% under MV + F60 within mSOC in macroaggregates and microaggregates. Within the mSOC in macroaggregates, compared to CK, MV + F80 and MV + F60 promoted the proportion of alkyl C by 9.61% and 6.69%, and decreased the content of O-alkyl C by 14.10% and 11.03%, respectively, which correspondingly increased alkyl C/O-alkyl C ratio. ConclusionsSubstitution of chemical fertilizer by MV (especially MV + F80 and MV + F60) improved the stability of SOC via increasing recalcitrant structure in mSOC, and was conducive to the sequestration of SOC in paddy soils.

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Strong mitigation of greenhouse gas emission impact via aerobic short pre-digestion of green manure amended soils during rice cropping

Cited by 29 publications

References 45 publications

Continuous milk vetch amendment in rice-fallow rotation improves soil fertility and maintains rice yield without increasing CH4 emissions: Evidence from a long-term experiment

Continuous milk vetch amendment in rice-fallow rotation improves soil fertility and maintains rice yield without increasing CH4 emissions: Evidence from a long-term experiment

Ecological and Environmental Benefits of Planting Green Manure in Paddy Fields

Effects of substitution of chemical fertilizer by Chinese milk vetch on distribution and composition of aggregates-associated organic carbon fractions in paddy soils

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