Ball, Bruce; Scott, Albert; Mc Taggart, Iain P and Watson, Chistine A (2002) Greenhouse gas emissions from soils under organic management. In: Powell, Jane and et al., (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 243-246.
This report was presented at the UK Organic Research 2002 Conference.
Land emissions of N2O, CO2 and NH3 have been subject to little study under organic systems, yet form important aspects of sustainability of such systems. We describe innovative methods developed at SAC to assess trace gas emission using both automatic closed chamber systems (intensive, short term monitoring) and manually-operated closed chamber systems (occasional, long term monitoring). Long-term data were collected from organic ley-arable rotation trials in North-east of Scotland. Short term data were collected to show the effect of timing and depth of ploughing-out of the ley phase on gas emissions. Ploughing gave a shortterm stimulation of CO2 and, more markedly, of N2O emission. Emissions of N2O from organic grass-clover leys were considerably lower than from conventional grass. However, some N2O emissions from organic arable are higher than from conventional systems, particularly in the first year after ploughing out ley. Ammonia emissions after spreading manure on grass were significant in the summer, though only short-lived.
|EPrint Type:||Conference paper, poster, etc.|
|Type of presentation:||Paper|
|Keywords:||Colloquium of Organic Researchers; COR; rotation; soils; air pollution; carbon emissions|
Environmental aspects > Air and water emissions
|Research affiliation:|| UK|
UK > Colloquium of Organic Researchers (COR) > COR 2002
UK > Scottish Rural Colleges (SRUC - previously SAC)
|Deposited By:||Powell, Ms Jane|
|Deposited On:||28 Apr 2006|
|Last Modified:||12 Apr 2010 07:33|
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