Heterogeneity of O2 dynamics in soil amended with animal manure and implications for greenhouse gas emissions

Zhu, Kun; Bruun, Sander; Larsen, Morten; Glud, Ronnie N.; Jensen, Lars Stoumann

doi:10.1016/j.soilbio.2015.02.012

Cited by 64 publications

(37 citation statements)

References 38 publications

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“…In a study of spatial heterogeneity of O 2 content and N turnover processes, Zhu et al . () found that several days after manure was added to soil, nitrification occurred mainly in the topsoil layer, where oxygen was sufficient from the diffusion of air; therefore, N 2 O was unlikely to be emitted from nitrification under such oxic conditions.…”

Section: Discussionmentioning

confidence: 99%

“…Nitrification rates increased greatly during the second week of incubation for all manure treatments, but this was not accompanied by a significant increase in N 2 O emissions. In a study of spatial heterogeneity of O 2 content and N turnover processes, Zhu et al (2015) found that several days after manure was added to soil, nitrification occurred mainly in the topsoil layer, where oxygen was sufficient from the diffusion of air; therefore, N 2 O was unlikely to be emitted from nitrification under such oxic conditions. The application of DCD increased CO 2 emissions slightly in the present study; however, this has not usually been observed (Pereira et al, 2010).…”

Section: Effect Of Dcd On N 2 O Emissionmentioning

confidence: 99%

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Nitrogen transformations in and N₂O emissions from soil amended with manure solids and nitrification inhibitor

Zhu

Bruun

Jensen

2016

European J Soil Science

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Nitrification and nitrous oxide (N2O) emissions from soil can be suppressed effectively by the nitrification inhibitor dicyandiamide (DCD). However, there is currently a lack of in‐depth understanding about whether the effect produced by DCD is affected by the application of manure solids and about the mechanisms of the mitigation effect of DCD on N2O emissions. We applied the 15N pool dilution technique in an incubation experiment to investigate the effect of DCD on nitrification processes and N2O emissions in soil amended with manure solids that were distributed either homogeneously or heterogeneously. The numerical model FLUAZ was used to calculate the gross nitrogen transformation rates from the 15N trace results. The results showed that application of DCD effectively inhibited gross nitrification rates by 50–66% in soil amended with manure solids, but there were no significant effects on nitrate immobilization and remineralization rates. With large rates of nitrate consumption (7–11 mg N kg−1 soil day−1), we detected no significant effect of DCD on nitrification. In general, N2O emissions were about 50% less with the addition of DCD to the soil, even when nitrate consumption dominated. Furthermore, the spatial distribution of manure solids interacted with the inhibitory effects of DCD on nitrification and N2O emissions. Highlights Explored the effects of co‐application of DCD and manure solids on N transformations. Used the 15N pool dilution technique to investigate effect of DCD on nitrification processes and N2O emissions. Application of DCD effectively and selectively inhibited gross nitrification rates and N2O emissions. The addition of DCD could be used to optimize application strategies of manure solids.

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Section: Discussionmentioning

confidence: 99%

Section: Effect Of Dcd On N 2 O Emissionmentioning

confidence: 99%

Nitrogen transformations in and N₂O emissions from soil amended with manure solids and nitrification inhibitor

Zhu

Bruun

Jensen

2016

European J Soil Science

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“…Therefore, we do not discard that denitrification was, in part, responsible of some N 2 O emissions observed after digestate application ( Figure S3), although the initial NO lower (Figures 1E,F) than in a previous study by Fangueiro et al (2015b) where high soil NO − 3 -N content (c. 80 mg kg −1 ) resulted in significant N 2 O emissions. In addition, hot spots where both nitrification and denitrification processes occur are created in soil after the addition of organic manures, including even when bulk WFPS is below 50%, resulting in N 2 O emissions (MarkFoged et al, 2011;Zhu et al, 2015). Baral et al (2017) found that the highest N 2 O emissions were produced at WFPS between 53 and 56% in a field experiment in which spring barley was fertilized with manure and digestate and that coupled nitrification-denitrification was the source of these emissions.…”

Section: Nitrogen Losses: Acidification and Nitrification Inhibitorsmentioning

confidence: 99%

Advanced Processing of Food Waste Based Digestate for Mitigating Nitrogen Losses in a Winter Wheat Crop

Sánchez‐Rodríguez

Carswell

Shaw

et al. 2018

Front. Sustain. Food Syst.

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The anaerobic digestion of food waste converts waste products into "green" energy. Additionally, the secondary product from this process is a nutrient-rich digestate, which could provide a viable alternative to synthetically-produced fertilizers. However, like fertilizers, digestate applied to agricultural land can be susceptible to both ammonia (NH 3 ) and nitrous oxide (N 2 O) losses, having negative environmental impacts, and reducing the amount of N available for crop uptake. Our main aim was to assess potential methods for mitigating N losses from digestate applied to a winter wheat crop and subsequent impact on yield. Plot experiments were conducted at two UK sites, England (North Wyke-NW) and Wales (Henfaes-HF), to assess NH 3 and N 2 O losses, yield and N offtake following a single band-spread digestate application. Treatments examined were digestate (D), acidified-digestate (AD), digestate with the nitrification inhibitor DMPP (D+NI), AD with DMPP (AD+NI), and a zero-N control (C). Ammonium nitrate (NH 4 NO 3 ) fertilizer N response plots (from 75 to 300 kg N ha −1 ) were included to compare yields with the organic N source. Across both sites, cumulative NH 3 -N losses were 27.6% from D and D+NI plots and 1.5% for AD and AD+NI of the total N applied, a significant reduction of 95% with acidification. Cumulative N 2 O losses varied between 0.13 and 0.35% of the total N applied and were reduced by 50% with the use of DMPP although the differences were not significant. Grain yields for the digestate treatments were 7.52-9.21 and 7.23-9.23 t DM ha −1 at HF and NW, respectively. Yields were greater from the plots receiving acidified-digestate relative to the non-acidified treatments but the differences were not significant. The yields obtained for the digestate treatments ranged between 84.2% (D+NI) and 103.6% (D) of the yields produced by the same N rate from an inorganic source at HF. Advanced processing of digestate reduced N losses providing an environmentally sound option for N management.

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“…Nitrification inhibitors can delay the conversion of NH4 + to NO3and provide more opportunities for plant uptake and microbial immobilization of NH4 + within the soil profile. The inhibition of O2 consumption by the nitrification process may also improve soil O2 status and reduce N2O loss through denitrification (Zhu et al, 2015). The 3,4-dimethylpyrazole phosphate (DMPP) is one of the most popular forms of such inhibitors, which has been widely used over the past years (Hatch et al, 2005;Zerulla et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Assessment of N 2 O emissions from a fertilised vegetable cropping soil under different plant residue management strategies using 15 N tracing techniques

Rashti

Wang

Chen

et al. 2017

Science of The Total Environment

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Combined application of plant residues and N fertilisers strongly affect soil mineral N dynamics and NO emissions depending on the quality of the plant residues, their application methods and other management strategies. We investigated the effect of combined application of two vegetable plant residues (cauliflower and sweet corn) and N fertiliser on N dynamics and NO emission in a glasshouse pot study. The experiment was conducted under two residue management practices (soil incorporation vs surface mulching) over 98days with growing basil (Ocimum basilicum) plants. We also assessed the efficacy of applying the nitrification inhibitor, 3,4-dimethylpyrazole phosphate (DMPP) to the plant residues, for reducing N loss and mitigating NO emissions. Application of plant residues, both on the soil surface or into soil, resulted in net N mineralisation and increased cumulative NO emission compared with the application of N fertiliser alone. Soil surface mulching of sweet corn decreased total and residue-induced cumulative NO emission compared with the incorporation method, while it showed opposite effect on NO emissions from cauliflower residue. The application of DMPP with sweet corn residue reduced total, residue- and fertiliser-induced NO emissions; however its application with cauliflower residue did not show any mitigating effect on the NO emissions. The residue application methods and the use of DMPP did not significantly affect N recovery by the basil plants. In contrast, soil incorporation of these residues doubled the microbial immobilisation of appliedN into soil organic matter. Linear regression analysis of NO emission during the experimental period indicated that in the treatments without DMPP application, soil NO-N concentration was the most important factor in controlling the magnitude of NO emissions, while the application of DMPP changed the dominant regulating factor from NO-N to NH-N concentration.

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Heterogeneity of O2 dynamics in soil amended with animal manure and implications for greenhouse gas emissions

Cited by 64 publications

References 38 publications

Nitrogen transformations in and N₂O emissions from soil amended with manure solids and nitrification inhibitor

Nitrogen transformations in and N₂O emissions from soil amended with manure solids and nitrification inhibitor

Advanced Processing of Food Waste Based Digestate for Mitigating Nitrogen Losses in a Winter Wheat Crop

Assessment of N 2 O emissions from a fertilised vegetable cropping soil under different plant residue management strategies using 15 N tracing techniques

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Heterogeneity of O2 dynamics in soil amended with animal manure and implications for greenhouse gas emissions

Cited by 64 publications

References 38 publications

Nitrogen transformations in and N2O emissions from soil amended with manure solids and nitrification inhibitor

Nitrogen transformations in and N2O emissions from soil amended with manure solids and nitrification inhibitor

Advanced Processing of Food Waste Based Digestate for Mitigating Nitrogen Losses in a Winter Wheat Crop

Assessment of N 2 O emissions from a fertilised vegetable cropping soil under different plant residue management strategies using 15 N tracing techniques

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Product

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Nitrogen transformations in and N₂O emissions from soil amended with manure solids and nitrification inhibitor

Nitrogen transformations in and N₂O emissions from soil amended with manure solids and nitrification inhibitor