Greenhouse gas emissions after application of digestate: short-term effects of nitrification inhibitor and application technique effects

Severin, Maxmilian; Fuß, Roland; Well, Reinhard; Hähndel, R.; Weghe, Herman Van den

doi:10.1080/03650340.2015.1110575

Cited by 13 publications

(9 citation statements)

References 31 publications

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“…To date, only few studies investigated the effect of NIs on N 2 O emissions from soils fertilized with biogas digestates (e.g. Severin et al 2016;Wolf et al 2014). Under laboratory conditions (50 days), N 2 O emission from a digestate treatment with 3,4-dimethylpyrazole phosphate (DMPP) was 70% lower than from a treatment without NI (Severin et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Nitrification inhibitors reduce N2O emissions induced by application of biogas digestate to oilseed rape

Kesenheimer

Augustin

Hegewald

et al. 2021

Nutr Cycl Agroecosyst

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Winter oilseed rape (WOSR) is the major oil crop cultivated in Europe and the most important feedstock for biodiesel. Up to 90% of the greenhouse gas (GHG) emissions from biodiesel production can occur during oilseed rape cultivation. Therefore, mitigation strategies are required and need to focus on direct nitrous oxide (N2O) emission as one of the largest GHG contributors in biodiesel production. Earlier studies show that nitrification inhibitors (NIs) can reduce N2O emissions derived from N-fertilization. Since information on the effect of biogas digestates with or without NIs on N2O emissions from WOSR fields is scarce, the aim of this study was to evaluate their effects on N2O emissions, mineral N dynamics, and oil yield in WOSR production fertilized with digestate. The study was conducted at five sites across Germany over three years resulting in 15 full site-years data sets. Across all sites and years, N2O emission from WOSR fertilized with biogas digestate (180 kg NH4+-N ha−1yr−1) ranged between 0.2 and 3.5 kg N2O–N ha−1 yr−1. Due to the reduction of the nitrate concentrations following digestate application, application of NI significantly reduced annual N2O emission by 36%. Our results demonstrate that NI can be an effective measure for reducing N2O emissions from digestate application, but its effectiveness depends on soil and weather conditions, and ultimately on the site-specific potential for N2O production and release. There was no effect of NI application on grain and oil yield.

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Section: Introductionmentioning

confidence: 99%

Nitrification inhibitors reduce N2O emissions induced by application of biogas digestate to oilseed rape

Kesenheimer

Augustin

Hegewald

et al. 2021

Nutr Cycl Agroecosyst

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“…The choice of the flow rate is inevitably a compromise since the time required to obtain low background concentration would decrease with increasing flow, but the precision of the denitrification rates would also decrease. Thus, initially, we selected a flow rate of 30 mL min −1 which was similar to that used in previous soil incubations . Helium flow was first directed to the outer cylinder via port 5, where port 1 of the chamber was left open to allow vertical upward flow through the soil core and the chamber to the atmosphere, which was measured to be 20 mL min −1 .…”

Section: Methodsmentioning

confidence: 99%

“…Thus, initially, we selected a flow rate of 30 mL min −1 which was similar to that used in previous soil incubations. 16,21 Helium flow was first directed to the outer cylinder via port 5, where port 1 of the chamber was left open to allow vertical upward flow through the soil core and the chamber to the atmosphere, which was measured to be 20 mL min −1 . To further lower the N 2 background, the He flow was directed via port 4 to the headspace after 19 h, thus reversing the flow direction, i.e.…”

Section: Laboratory Experimentsmentioning

confidence: 99%

Improvement of the ¹⁵N gas flux method for in situ measurement of soil denitrification and its product stoichiometry

Well

Burkart

Giesemann

et al. 2019

Rapid Comm Mass Spectrometry

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Rationale Field measurement of denitrification in agricultural ecosystems using the 15N gas flux method has been limited by poor sensitivity because current isotope ratio mass spectrometry is not precise enough to detect low 15N2 fluxes in the presence of a high atmospheric N2 background. For laboratory studies, detection limits are improved by incubating soils in closed systems and under N2‐depleted atmospheres. Methods We developed a new procedure to conduct the 15N gas flux method suitable for field application using an artificially N2‐depleted atmosphere to improve the detection limit at the given precision of mass spectrometry. Laboratory experiments with and without 15N‐labelling and using different flushing strategies were conducted to develop a suitable field method. Subsequently, this method was tested in the field and results were compared with those obtained from the conventional 15N gas flux method. Results Results of the two methods were in close agreement showing that the denitrification rates determined were not biased by the flushing procedure. Best sensitivity for N2 + N2O fluxes was 10 ppb, which was 80‐fold better than that of the reference method. Further improvement can be achieved by lowering the N2 background concentration below the values established in the present study. Conclusions In view of this progress in sensitivity, the new method will be suitable to measure denitrification dynamics in the field beyond peak events.

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“…Comparing different application techniques, slurry injection might significantly increase direct N 2 O emission when compared to broadcast application ( Wulf et al., ; Velthof and Mosquera , ), whereas different surface application techniques (splashplate or bandspread) did not affect N 2 O emissions ( Cahalan et al., ). After slurry injection, the soil area directly above the injection slot was shown to be the main emitting area ( Dittert et al., ) due to creation of anaerobic hotspots in the injection slot promoting denitrification ( Flessa and Beese , ; Severin et al., , ).…”

Section: Introductionmentioning

confidence: 99%

Effect of cattle slurry application techniques on N₂O and NH₃ emissions from a loamy soil

Herr

Mannheim²,

Müller

et al. 2019

J. Plant Nutr. Soil Sci.

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We determined N2O fluxes from an unfertilized control (CON), from a treatment with mineral N‐fertilizer (MIN), from cattle slurry with banded surface application and subsequent incorporation (INC), and from slurry injection (INJ) to silage maize (Zea mays, L.) on a Haplic Luvisol in southwest Germany. In both years, amount of available N (total N fertilized + Nmin content before N application) was 210 kg N ha−1. In the slurry treatment of the 1st year, 140 kg N ha−1 were either injected or incorporated, whereas 30 kg N ha−1 were surface applied to avoid destruction of the maize plants. In the 2nd year, all fertilizers were applied with one single application. We calculated greenhouse gas emissions (GHG) on field level including direct N2O emissions (calculated from the measured flux rates), indirect N2O emissions (NH3 and NO3 - induced N2O emission), net CH4 fluxes, fuel consumption and pre‐chain emissions from mineral fertilizer. NH3 losses were measured in the 2nd year using the Dräger‐Tube Method and estimated for both years. NH3 emission was highest in the treatment without incorporation. It generally contributed less than 5% of the greenhouse gas (GHG) emission from silage maize cultivation. The mean area‐related N2O emission, determined with the closed chamber method was 2.8, 4.7, 4.4 and 13.8 kg N2O‐N ha−1 y−1 for CON, MIN, INC, and INJ, respectively. Yield‐related N2O emission showed the same trend. Across all treatments, direct N2O emission was the major contributor to GHG with an average of 79%. Trail hose application with immediate incorporation was found to be the optimum management practice for livestock farmers in our study region.

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Greenhouse gas emissions after application of digestate: short-term effects of nitrification inhibitor and application technique effects

Cited by 13 publications

References 31 publications

Nitrification inhibitors reduce N2O emissions induced by application of biogas digestate to oilseed rape

Nitrification inhibitors reduce N2O emissions induced by application of biogas digestate to oilseed rape

Improvement of the ¹⁵N gas flux method for in situ measurement of soil denitrification and its product stoichiometry

Effect of cattle slurry application techniques on N₂O and NH₃ emissions from a loamy soil

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Greenhouse gas emissions after application of digestate: short-term effects of nitrification inhibitor and application technique effects

Cited by 13 publications

References 31 publications

Nitrification inhibitors reduce N2O emissions induced by application of biogas digestate to oilseed rape

Nitrification inhibitors reduce N2O emissions induced by application of biogas digestate to oilseed rape

Improvement of the 15N gas flux method for in situ measurement of soil denitrification and its product stoichiometry

Effect of cattle slurry application techniques on N2O and NH3 emissions from a loamy soil

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Product

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Improvement of the ¹⁵N gas flux method for in situ measurement of soil denitrification and its product stoichiometry

Effect of cattle slurry application techniques on N₂O and NH₃ emissions from a loamy soil