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Field method to determine N2O emission from nitrification and denitrification

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Abstract

 Nitrous oxide (N2O) emissions via the nitrification (I nit) and denitrification (I den) pathways were successfully measured with in-field incubation of soil cores in preserving jars at 0 Pa and 5–10 Pa acetylene. From the incubations, fractions of nitrification – N2O over total N2O (I nit / I tot) – and denitrification – N2O over total N2O (I den / I tot) – were obtained. Actual field emissions of N2O via nitrification (F nit) and denitrification (F den) were calculated by multiplying the fractions from the incubation technique with the daily N2O emission (F day) determined with a direct soil cover method. The approach presented here was successful for a whole range of soil moisture conditions in intensive grassland. F nit and F den followed the trends of soil ammonium and soil nitrate.

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Authors and Affiliations

  1. Department of Applied Microbiology, Justus-Liebig University Giessen, D-35390 Giessen, Germany e-mail: Christoph.Mueller@agrar.uni-giessen.de, Tel.: +49-0641-9937355, Fax: +49-0641-9937359, , , , , , DE

    C. Müller

  2. Department of Soil Science, Lincoln University, Canterbury, New Zealand, , , , , , NZ

    R. R. Sherlock

  3. New Zealand Institute for Crop and Food Research, Lincoln, Canterbury, New Zealand, , , , , , NZ

    P. H. Williams

Authors
  1. C. Müller
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  2. R. R. Sherlock
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  3. P. H. Williams
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Received: 31 October 1997

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Müller, C., Sherlock, R. & Williams, P. Field method to determine N2O emission from nitrification and denitrification. Biol Fertil Soils 28, 51–55 (1998). https://doi.org/10.1007/s003740050462

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  • DOI: https://doi.org/10.1007/s003740050462

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