Effect of mixed inhibitor application on N2O production pathways in paddy soil

Wu, Kaikuo; Gong, Ping; Zhang, Zhe; Wei, Zhanbo; Yu, Chenggang; Song, Yanling; Xue, Yan; Zhang, Lili

doi:10.1007/s11368-022-03183-2

Cited by 6 publications

(2 citation statements)

References 57 publications

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“…The chemical properties of both soils were determined using conventional methods (Xiao et al 2022). Soil urea-N and inorganic N (NH4 + -N and NO3 --N) were extracted using 5 g of soil and 50 mL of solution, urea-N was extracted with KCl-PMA (2 mol•L -1 KCl and 5 mg•L -1 PMA) (Wu et al 2022), and inorganic N was extracted with 2 mol•L -1 KCL (Cui et al 2021), and then determined on a continuous flow analyzer (AA III, Norderstedt, Germany).…”

Section: Methodsmentioning

confidence: 99%

Influence of seaweed extracts on the degradation and effectiveness of 3,4-dimethylpyrazole phosphate

Xiao,

Li,

Zhang

et al. 2023

BioRes

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3,4-Dimethylpyrazole phosphate (DMPP) is acknowledged as one of the most efficient nitrification inhibitors (NIs); however, researchers have suggested that its effectiveness needs to be further improved. The authors combined the biostimulant seaweed extract (SE) with DMPP and conducted an indoor incubation experiment to initially investigate the impact of the influence of SE on the degradation and effectiveness of DMPP. Meanwhile, a method for the extraction and determination of DMPP was developed. DMPP performed better, with a longer effective time in loess than black soil, and SE showed a delayed effect on DMPP degradation of DMPP at the beginning of the incubation and then accelerated the degradation process. This was attributed to the adsorption effect of SE on DMPP, consequently reducing its effectiveness. The SE delayed the hydrolysis of urea in various soils; however, no significant impact on urease activity was observed (P < 0.05) (P < 0.05). Furthermore, it also increased potential nitrification rate (PNR) from 10 to 21 days and promoting the rapid transformation of NH4+-N in black soil. The SE reduced PNR within 21 days and inhibited nitrification in loess. In addition, the SE appeared to mitigate the adverse effects of excessive nitrogen on microorganisms The combination of DMPP and SE was not conducive to the inhibition of soil nitrification, and this formulation in field applications requires further investigation.

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Section: Methodsmentioning

confidence: 99%

Influence of seaweed extracts on the degradation and effectiveness of 3,4-dimethylpyrazole phosphate

Xiao,

Li,

Zhang

et al. 2023

BioRes

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“…In the presence of water layer on the soil N 2 O is further reduced and escape to atmosphere as N 2 . N 2 O is emitted mainly through soil surface in the absence of floodwater (Xing et al 2009;Majumdar 2013;Wu et al 2022). Since there was continuous flooding between three fertilizer applications and between supplementary fertilizer and end season drainage N2O was further reduced and escaped to atmosphere as N 2 , therefore the N 2 O emission was not observed during these periods of growing season.…”

Section: N 2 O Emissions In Different Regions Of South Koreamentioning

confidence: 99%

Estimation of nitrous oxide emissions from rice paddy fields using the DNDC model: a case study of South Korea

Khokhar

Ali

Maitlo

et al. 2022

Water Science and Technology

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The Denitrification-Decomposition (DNDC)-Rice is a mechanistic model which is widely used for simulation and estimation of greenhouse gas emissions [Nitrous oxide (N2O)] from soils under rice cultivation. N2O emissions from paddy fields in South Korea are of high importance for their cumulative effect on climate. The objective of this study was to estimate the N2O emissions and biogeochemical factors involved in N2O emissions such as ammonium (NH4+) and nitrate (NO3−) using the DNDC model in the rice-growing regions of South Korea. N2O emission was observed at every application of fertilizer and during end-season drainage at different rice-growing regions in South Korea. Maximum NH4+ and NO3− were observed at 0–10 cm depth of soil. NH4+ increased at each fertilizer application and no change in NO3− was observed during flooding. NH4+ decreased and NO3− increased simultaneously at end season drainage. Minimum and maximum cumulative N2O emissions were observed at Chungcheongbuk-do and Jeju-do regions of South Korea, respectively. The simulated average cumulative N2O emission in rice paddies of South Korea was 1.37 kg N2O-N ha−1 season−1. This study will help in calculating the total nitrogen emissions from agriculture land of South Korea and the World.

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Effect of Nitrification Inhibitor Addition on Rice N Utilization and Soil Bacterial Community

Hou

Zhao

et al. 2022

J Soil Sci Plant Nutr

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Effect of mixed inhibitor application on N2O production pathways in paddy soil

Cited by 6 publications

References 57 publications

Influence of seaweed extracts on the degradation and effectiveness of 3,4-dimethylpyrazole phosphate

Influence of seaweed extracts on the degradation and effectiveness of 3,4-dimethylpyrazole phosphate

Estimation of nitrous oxide emissions from rice paddy fields using the DNDC model: a case study of South Korea

Effect of Nitrification Inhibitor Addition on Rice N Utilization and Soil Bacterial Community

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