creators_name: Ball, Bruce
creators_name: Scott, Albert
creators_name: Mc Taggart, Iain P
creators_name: Watson, Chistine A
editors_name: Powell, Jane
editors_name: et al., 
type: conference_item
datestamp: 2006-04-28
lastmod: 2009-08-20 14:32:11
metadata_visibility: show
title: Greenhouse gas emissions from soils under organic management
ispublished: pub
subjects: 5soil
subjects: 5emissions
full_text_status: public
keywords: Colloquium of Organic Researchers; COR; rotation; soils; air pollution; carbon emissions
abstract: 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.
date: 2002
date_type: published
publication: Proceedings of the UK Organic Research 2002 Conference
publisher: Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth
pagerange: 243-246
refereed: never
referencetext: Ball, B C; McTaggart, I P; Watson, C A (2002) Influence of organic ley-arable management and afforestation in sandy loam to clay loam soils on fluxes of N2O and CH4 in Scotland. Agriculture, Ecosystems and Environment (in press). 
Scott, A; Crichton, I; Ball B C (1999) Long-term monitoring of soil gas fluxes with closed chambers using automated and manual systems. Journal of Environmental Quality 28, 1637-1643. 
Scott, A: Ball, B C; Crichton, I J; Aitken, M N (2000) Nitrous oxide and carbon dioxide emissions from grassland amended with sewage sludge. Soil Use and Management 16, 36-41. 
Skiba U; McTaggart I P; Smith K A; Hargreaves, K; Fowler, D (1996) Estimates of nitrous oxide emissions from soil in the UK. Energy Conservation and Management 37, 1303-1308.  

citation: Ball, Bruce; Scott, Albert; Mc Taggart, Iain P and Watson, Chistine A (2002) Greenhouse gas emissions from soils under organic management. UK Organic Research 2002 Conference, Aberystwyth, 26-28 March 2002. 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.
document_url: http://orgprints.org/8291/1/Ball_Greenhouse_emissions_soils.pdf