Ammonia emissions after field application of slurry

Ammonia emissions after field application of slurry are investigated by means of the current technique of measurement. Based on the results, the emissions for field application of slurry are modeled depending on influencing factors.


  • Lead school School of Agricultural, Forest and Food Sciences
  • Institute Agriculture
  • Research unit Sustainability and ecosystem
  • Funding organisation Schweizerische Eidgenossenschaft (Bundesverwaltung)
  • Duration 01.07.2011 - 18.05.2018
  • Project management Thomas Kupper
  • Head of project Thomas Kupper
  • Project staff Jörg Sintermann
    Markus Jocher
    Thomas Kupper
    Albrecht Neftel
    Christoph Häni
  • Partner Institut national de la recherche agronomique (INRA)
    Bundesamt für Umwelt BAFU
    National Institute for Public Health and the Environment - Ministry of Health, Welfare and Sport
    Landesamt für Natur, Umwelt und Verbraucherschutz NRW Recklinghausen
    Bundesamt für Landwirtschaft BLW
    ECN Holland
  • Keywords Ammonia, emissions, field application, slurry, model, emission factor, livestock production


Determination of the ammonia emissions after field application of slurry, determination of the emission factors and the emission reduction by using low emission technologies for field application of slurry, discussion of the results

Course of action

Within 10 to 12 field experiments slurry will be spread onto 3 to 4 experimental plots (grassland) with a size of about 30x30m. The following influencing factors will be investigated: season and time of day ot the application, spreading technology (e.g. splash plate, trailing hose), slurry type (cattle, pig), application rate. Measuring the ammonia concentrations will be performed by means of Impingers, the emissions will be determined with WindTrax software.