Unexpected higher decomposition of soil organic matter during cold fallow season in temperate rice paddy

Gwon, Hyo Suk; Khan, Muhammad Israr; Yoon, Young Eun; Lee, Yong-Bok; Kim, Pil Joo; Hwang, Hyun Young

doi:10.1016/j.still.2018.11.009

Cited by 12 publications

(7 citation statements)

References 39 publications

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“…In addition to the single application of chemical or organic fertilizer, the combined application of both is the main measure of agricultural fertilization (Zhou et al, 2019;Qaswar et al, 2020). Different proportions of fertilizers with differences in C/N ratio may affect soil physicochemical properties, and soil CO 2 and CH 4 emission (Finn et al, 2016;Zhou et al, 2017;Gwon et al, 2019). Fertilizers with low C/N ratio can substantially increase the decomposition of residues and contribute to GHG emissions (Abera et al, 2014;Zhou et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Effects of inorganic and organic fertilizers on CO2 and CH4 fluxes from tea plantation soil

Lin

Zhang

Shen

et al. 2021

Elementa: Science of the Anthropocene

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Agricultural practices such as fertilization considerably influence soil greenhouse gas fluxes. However, the effects of fertilization on greenhouse gases fluxes remain unclear in tea soil when soil nitrogen is low. In the present study, soil CO2 and CH4 fluxes under various fertilization treatments in tea soil were investigated during a 50-day period. The experiment consisted of five treatments: no fertilizer (CK), single nitrogen (urea, N), single oilseed rape cake fertilizer (R), nitrogen + cake fertilizer (2:1, NR1), and nitrogen + cake fertilizer (1:2, NR2). The fertilization proportion of NR1 and NR2 was determined by the nitrogen content of nitrogen fertilizer and cake fertilizer. The results revealed that the single application of nitrogen had no significant effect on soil CO2 flux. However, the addition of cake fertilizer significantly increased CO2 emissions through enhanced soil microbial biomass carbon (MBC). Additionally, CO2 emissions were directly proportional to the amount of carbon (C) in the fertilizer. All treatments were minor sinks for CH4 except for the treatment NR1. Specifically, the cumulative CH4 fluxes of NR1 and NR2 were significantly higher than rest of the three treatments, which implies that application of urea and oilseed rape cake reduced the capability of CH4 oxidation in tea soil. Structural equation models indicated that soil CO2 flux is significantly and positively correlated with soil dissolved organic carbon, MBC and soil pH, while mineral nitrogen content was the main factor affecting CH4 flux. Overall, the application of oilseed rape cake increased the oxidation of CH4 and promoted soil C sequestration but inevitably increased the soil CO2 emissions.

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Section: Introductionmentioning

confidence: 99%

Effects of inorganic and organic fertilizers on CO2 and CH4 fluxes from tea plantation soil

Lin

Zhang

Shen

et al. 2021

Elementa: Science of the Anthropocene

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“…Many studies have shown that the application of chemical fertilizers increases soil CO 2 emissions (Zhang et al, 2019). Chemical fertilizers with different compounds with deviations in C/N ratio may affect soil physicochemical properties and soil CO2 emission (Gwon et al, 2019). tang2019).…”

Section: Inorganic Fertilizers On Co 2 Emission In Rice Productionmentioning

confidence: 99%

Integrated nutrient management - promising way to reduce carbon dioxide and methane emission in flooded rice ecosystem: A review

Ravikumar

Ganapathy

Karthikeyan

et al. 2021

JANS

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Climate change is an inevitable ruling issue caused by the increasing concentration of greenhouse gases (GHG’s) in the atmosphere worldwide. It will have a considerable impact on agriculture and its related fields like live stocks and fisheries. In India, the main sectors contributing to these emissions are industry, agriculture and waste, with a total emission of 334 MT CO2 eq. Besides, the major sources in agriculture are enteric fermentation (63.4%), rice cultivation (20.9%), agricultural soils (13.0%), manure management (2.4%) and on-field burning is the crop residue (2.0%). Thus, the crop productivity sector (rice cultivation, soil and field burning of crop residues) contributes 35.9% to the total emission from agriculture. Therefore, reducing GHG emissions and enhancing the C sequestration in soil and biomass has become challenging. However, the total GHG’s emission from all sectors of the country has decreased from 33% in 1970 to 18% in 2010. Cutting off GHGs emission from agriculture can be achieved by sequestering C and reducing methane emissions(CH4) and carbon dioxide(CO2) through various soil and crop management strategies. Integrated nutrient management (INM) practice ensures the Soil –plant –atmospheric continuum (SPAC) in a promising way, reducing the GHGs emission by sequestering more carbon to soil than emissions. A studious prominent INM solution can be identified to develop a mitigation strategy that helps in climate change adaptation and sustains soil health through soil carbon sequestration.

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“…대표적인 콩과의 풋거름작물인 헤어리베치 (Vicia Villosa R.)는 질소 비료를 대체하며, 지력을 증진시키는 기능이 있 다 (Müller, 1987;Sarrantonio and Scott, 1988;Varco et al, 1989;Singh et al, 1990;Utomo et al, 1990). 그러나 논 에 헤어리베치를 환원할 경우, 약 90%가 한 달 내로 무기화되어 벼 재배 중후반의 질소 공급에 차질을 줄 수 있으며 (Lee et al, 2002), 유기물 투입에 의한 메탄 배출의 증가 문제가 발생할 수 있다 (Gwon et al, 2019…”

Section: Treatmentunclassified

“…완효성 비료를 사용하면 벼 뿌리가 발달되며(Tang et al, 2007;Peng, 2013), 뿌리를 통한 산소공급으로 메탄 산화량이 증가함에 따라(Gutierrez et al, 2014) 작기 중 총 메탄 배출량이 감소한 것으로 보인다. 반면 호기적인 환경의 휴경기 중에는 메탄이 거의 배출되지 않았으며, 선행 연구도 유사한 결과를 확인할 수 있었다(Kim et al, 2017;Gwon et al, 2019).…”

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Estimation of Greenhouse Gas Emission in Rice Paddy Soil Under Slow Released N Fertilizer Application: Annual Investigation

Gwon¹,

Kim²,

Lee³

et al. 2020

Korean J. Soil. Sci. Fert.

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Intermittent drainage can reduce methane (CH4) emission from rice paddy soils, but nitrous oxide (N2O) emission can increase. We believe that the slow released N fertilizer can mitigate N2O emissions by reducing N lost to the environment. In this study, we tried to assess the influence of slow N fertilizer on effective greenhouse gas (GHG) reduction. We installed three different treatments, urea (U) treatment, controlled release fertilizer (CRF) treatment, and hairy vetch with urea (HV) treatment. The emission rates of CH4 and N2O were monitored using the closed chamber method during cropping and fallow season. The grain yield was investigated to calculate yield scaled greenhouse gas intensity (GHGI). Compared with U treatment, CH4 emission was reduced in CRF but increased in HV treatment. In contrast, N2O emission was increased in CRF but reduced in HV treatment. Grain yield was increased in CRF and HV treatment than U treatment. The GHGI was the lowest in CRF treatment by high grain yield and low GHG emission. In contrast, GHGI was the highest in HV treatment due to increased CH4 emission. In conclusion, controlled release fertilizer can effectively reduce GHG emission. However, CRF application increased N2O emissions during the fallow season, and further investigation is needed to determine whether this is due to the effect of fertilizer residues. In addition, due to field experiments that are easy to influenced by the environmental condition, it seems necessary to verify the research results through additional investigations over many years.

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Unexpected higher decomposition of soil organic matter during cold fallow season in temperate rice paddy

Cited by 12 publications

References 39 publications

Effects of inorganic and organic fertilizers on CO2 and CH4 fluxes from tea plantation soil

Effects of inorganic and organic fertilizers on CO2 and CH4 fluxes from tea plantation soil

Integrated nutrient management - promising way to reduce carbon dioxide and methane emission in flooded rice ecosystem: A review

Estimation of Greenhouse Gas Emission in Rice Paddy Soil Under Slow Released N Fertilizer Application: Annual Investigation

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