Anaerobic digestates lower N2O emissions compared to cattle slurry by affecting rate and product stoichiometry of denitrification – An N2O isotopomer case study

Köster, Jan Reent; Cardenas, L. M.; Bol, Roland; Lewicka‐Szczebak, Dominika; Şenbayram, Mehmet; Well, Reinhard; Giesemann, Anette; Dittert, Klaus

doi:10.1016/j.soilbio.2015.01.021

Cited by 65 publications

(60 citation statements)

References 44 publications

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“…The overall N 2 O fluxes corresponded well with those from other studies with similar incubation conditions and application rates of BD in terms of nitrogen per hectare (Köster et al, 2015;Senbayram et al, 2012;Severin et al, 2015). However, the latter studies assumed a distribution of BD into soil using a cultivator, which implies a smaller concentration of BD than we actually applied.…”

Section: Discussionsupporting

confidence: 85%

“…The mean N 2 fluxes of up to 0.5 (loamy sand) and 3.8 mg N m −2 h −1 (clayey silt) at 15 • C (Fig. 5, Table A3) were considerably smaller than the mean fluxes of up to 13.0 mg m −2 h −1 observed by Köster et al (2015) . The first to the fourth days of the incubation were measured in an aerobic He-O 2 headspace (with 2 days at 2 • C followed by another 2 days at 15 • C) while on the fifth day measurements were conducted in an anaerobic headspace with pure He (at 15 • C).…”

Section: Discussionmentioning

confidence: 75%

“…On the other hand, increased amounts of C in the injection band also promote respiration, additionally depleting O 2 supply (Dell et al, 2011). Altogether, the conditions during the initial phase after injection of BD foster microsites favourable for microbial denitrification, which also promote the formation of N 2 due to anaerobic conditions (Köster et al, 2015;Webb et al, 2010).…”

Section: Introductionmentioning

confidence: 97%

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Potential short-term losses of N2O and N2 from high concentrations of biogas digestate in arable soils

Fiedler

Augustin

Wrage‐Mönnig

et al. 2017

SOIL

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Abstract. Biogas digestate (BD) is increasingly used as organic fertilizer, but has a high potential for NH 3 losses. Its proposed injection into soils as a countermeasure has been suggested to promote the generation of N 2 O, leading to a potential trade-off. Furthermore, the effect of high nutrient concentrations on N 2 losses as they may appear after injection of BD into soil has not yet been evaluated. Hence, we performed an incubation experiment with soil cores in a helium-oxygen atmosphere to examine the influence of soil substrate (loamy sand, clayey silt), water-filled pore space (WFPS; 35, 55, 75 %) and application rate (0, 17.6 and 35.2 mL BD per soil core, 250 cm 3 ) on the emission of N 2 O, N 2 and CO 2 after the usage of high loads of BD. To determine the potential capacity for gaseous losses, we applied anaerobic conditions by purging with helium for the last 24 h of incubation. Immediate N 2 O and N 2 emissions as well as the N 2 / (N 2 O+N 2 ) product ratio depended on soil type and increased with WFPS, indicating a crucial role of soil gas diffusivity for the formation and emission of nitrogenous gases in agricultural soils. However, emissions did not increase with the application rate of BD. This is probably due to an inhibitory effect of the high NH + 4 content of BD on nitrification. Our results suggest a larger potential for N 2 O formation immediately following BD injection in the fine-textured clayey silt compared to the coarse loamy sand. By contrast, the loamy sand showed a higher potential for N 2 production under anaerobic conditions. Our results suggest that short-term N losses of N 2 O and N 2 after injection may be higher than probable losses of NH 3 following surface application of BD.

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Section: Discussionsupporting

confidence: 85%

Section: Discussionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 97%

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Potential short-term losses of N2O and N2 from high concentrations of biogas digestate in arable soils

Fiedler

Augustin

Wrage‐Mönnig

et al. 2017

SOIL

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“…It is not clear in our case whether denitrification occurred, as soil moisture was relatively low, but there were short periods where moisture increased to 70–76% WFPS, and especially for the autumn experiment, when several peaks appeared 4 and 8 months after application. The opposite has been reported by Koester et al (2015) where, after apportioning the pathway to N 2 O via an isotopomer approach, they proposed that initially denitrification dominated and was followed by nitrification once the carbon pool was exhausted. Our results differ from Boon et al (2014), as in their case there was a delay in response after application of urine attributed to inactivity of nitrifier populations on swards that do not receive regular fertiliser.…”

Section: Discussionmentioning

confidence: 71%

Effect of the application of cattle urine with or without the nitrification inhibitor DCD, and dung on greenhouse gas emissions from a UK grassland soil

Cardenas

Misselbrook

Hodgson

et al. 2016

Agriculture, Ecosystems & Environment

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“…Most inorganic nitrogen (N) in slurry and fresh solid manure is in the form of ammonium. Transformation from ammonium to nitrate via nitrification is a source of N 2 O, as well as the production of NO 3 (nitrate), which is a source of N for the denitrification (the biological reduction of nitrate to N 2 gas) process, which increases further the N 2 O production through incomplete denitrification (Chadwick et al, 2011;Köster et al, 2015). The quantity of CH 4 and N 2 O produced by manure is sensitive to environmental conditions such as temperature, manure composition and its management.…”

Section: Sources Of Methane and Nitrous Oxide Enteric And Manure Emimentioning

confidence: 99%

Methane, nitrous oxide emissions and mitigation strategies for livestock in developing countries: A review

Forabosco¹,

Chitchyan²,

Mantovani³

2017

SA J. An. Sci.

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Methane (CH 4 ) and nitrous oxide (N 2 O) are two important greenhouse gases (GHGs) that are emitted into the atmosphere by livestock during the process of enteric fermentation and manure management. Developing countries produce a large quantity of those emissions, caused mainly by inefficient animal rearing systems, feed production and manure management. This paper outlines the CH 4 and N 2 O emitted from livestock in developing countries and the mitigation actions that could be put in place to reduce atmospheric emissions and increase animal productivity. Emission intensity expresses emission (CO 2 equivalents) per unit of product and describes it in relation to the capacity of local animals to produce from local resources. Developing countries are characterized by low production per animal and, consequently, high emission intensity. The emission intensity of dairy cattle in developing countries ranges from 2 to 9 kg CO 2 -eq/kg fat and protein corrected milk (FPCM) and in only a few cases is below 2 kg CO 2 -eq/kg FPCM. In sub-Saharan Africa, the average emission intensity is 7.5 kg CO 2 -eq/kg FPCM for dairy cattle, 71 kg CO 2 -eq/kg of carcass weight for beef cattle, 6.9 kg CO 2 -eq/kg FPCM for sheep and goats, and 5 kg CO 2 -eq/kg eggs for chickens. Taking into account the limited economic and technical resources in most developing countries, the application of appropriate mitigation tools is recommended to reduce the emissions of CH 4 and N 2 O gases in the atmosphere. Increasing livestock productivity through selection and feeding is the most effective tool to reduce emission intensity. ______________________________________________________________________________________

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Anaerobic digestates lower N2O emissions compared to cattle slurry by affecting rate and product stoichiometry of denitrification – An N2O isotopomer case study

Cited by 65 publications

References 44 publications

Potential short-term losses of N<sub>2</sub>O and N<sub>2</sub> from high concentrations of biogas digestate in arable soils

Potential short-term losses of N<sub>2</sub>O and N<sub>2</sub> from high concentrations of biogas digestate in arable soils

Effect of the application of cattle urine with or without the nitrification inhibitor DCD, and dung on greenhouse gas emissions from a UK grassland soil

Methane, nitrous oxide emissions and mitigation strategies for livestock in developing countries: A review

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Anaerobic digestates lower N2O emissions compared to cattle slurry by affecting rate and product stoichiometry of denitrification – An N2O isotopomer case study

Cited by 65 publications

References 44 publications

Potential short-term losses of N&lt;sub&gt;2&lt;/sub&gt;O and N&lt;sub&gt;2&lt;/sub&gt; from high concentrations of biogas digestate in arable soils

Potential short-term losses of N&lt;sub&gt;2&lt;/sub&gt;O and N&lt;sub&gt;2&lt;/sub&gt; from high concentrations of biogas digestate in arable soils

Effect of the application of cattle urine with or without the nitrification inhibitor DCD, and dung on greenhouse gas emissions from a UK grassland soil

Methane, nitrous oxide emissions and mitigation strategies for livestock in developing countries: A review

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Potential short-term losses of N<sub>2</sub>O and N<sub>2</sub> from high concentrations of biogas digestate in arable soils

Potential short-term losses of N<sub>2</sub>O and N<sub>2</sub> from high concentrations of biogas digestate in arable soils