Monitoring GHG from manure stores on organic and conventional dairty farms
| Autor: | Sneath, R.W., Béline, Fabrice, Hilhorst, M.A. |
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| Přispěvatelé: | Irstea Publications, Migration, SILSOE RESEARCH INSTITUTE GBR, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Gestion environnementale et traitement biologique des déchets (UR GERE), Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF), Wageningen University and Research [Wageningen] (WUR) |
| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: | |
| Zdroj: | Greenhouse gas emissions from agriculture-Mitigation options and strategies. International Conference, Leipzig, DEU, 10-12 February 2004 Greenhouse gas emissions from agriculture-Mitigation options and strategies. International Conference, Leipzig, DEU, 10-12 February 2004, 2004, pp.45-50 |
| Popis: | The aim of this project was to measure green house gas (GHG) emissions from manures in covered and uncovered slurry stores and solid manure (FYM) heaps. The tracer ratio method, using SF6 as the tracer gas, was the chosen method of measurement although the limitations of this method prevented successful measurements being made on some of the stores. The difference in concentration of the upwind and downwind samples and interfering sources were limiting factors. Only when the solid manure was stored indoors were emission measurements successful. Methane emissions measured from the organic FYM in summer were 17.1 gC m-3.d-1 and N2O of 411 mgN.m-3d-1Emissions were successfully measured from the uncovered slurry stores. Emission rates from the uncovered slurry stores on the conventional farm and the organic farm ranged from 14.4 to 49.6 and from 12.4 to 42.3 gC.m-3.d-1 respectively and the mean CH4 emission rates were 35 and 26 gC.m-3.d-1. On both farms, N2O emissions were close to 0.The covered slurry stores were in such close proximity to other GHG sources that the tracer ratio method was unsuitable and another method was adopted. The measured emissions from covered slurry stores of CH4, CO2 and NH3 were respectively 14.9 gC m-3d-1, 12.9 gC m-3d-1 and 18.6 mg NH3 m-2d-1of slurry in February and 12.0 gC m-3d-1, 9.5 gC m-3d-1 and 335 mg NH3 m-2d-1slurry in March. No N2O production could be measured. |
| Databáze: | OpenAIRE |
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