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IJAFR, volume 52, no1, 2013 >

Please use this identifier to cite or link to this item: http://hdl.handle.net/11019/451

Title: How much grassland biomass is available in Ireland in excess of livestock requirements?
Authors: McEniry, Joseph
Crosson, Paul
Finneran, Eoghan
McGee, Mark
Keady, Tim
O'Kiely, Padraig
Keywords: Alternative applications
Biomass yield
Grass
Silage
Issue Date: 2013
Publisher: Teagasc (Agriculture and Food Development Authority), Ireland
Citation: J. McEniry, P. Crosson, E. Finneran, M. McGee, T.W.J. Keady and P. O’Kiely. How much grassland biomass is available in Ireland in excess of livestock requirements? Irish Journal of Agricultural and Food Research, 2013, 52, 67–80
Series/Report no.: Irish Journal of Agricultural and Food Research;vol 52
Abstract: Grassland is a dominant biomass resource in Ireland and underpins most animal production systems. However, other commercial uses for grassland biomass exist, including, for example, the production of biogas through anaerobic digestion for the generation of heat, electricity and transport fuel. The objective of this study was to estimate the annual grassland resource available in Ireland in excess of livestock requirements under six contrasting scenarios. Under current grassland management and production practices there is an estimated average annual grassland resource of ca. 1.7 million tonnes of dry matter (DM) available in excess of livestock requirements. Only a small proportion of this resource (0.39 million tonnes of DM per annum) would be available if the targets set out in ‘Food Harvest 2020’ were achieved. However, increasing nitrogen (N) fertiliser input (to the limit permitted by the E.U. Nitrates Directive) combined with increasing the grazed grass utilisation rate of cattle (from 0.60 to 0.80 kg DM ingested by livestock per kg DM grown) has the potential to significantly increase this average resource to 12.2 million t DM/annum, even when allowing for achievement of ‘Food Harvest 2020’ targets. Under these scenarios, alternative uses for grassland biomass such as anaerobic digestion and green biorefining would not compete with traditional dairy, beef and lamb production systems, but could provide an alternative enterprise and income to farmers.
Description: peer-reviewed
Funding for this research was provided under the Irish National Development Plan, through the Research Stimulus Fund (#RSF 07 557), administered by the Department of Agriculture, Food and the Marine
URI: http://hdl.handle.net/11019/451
ISSN: 0791-6833
Appears in Collections:Grassland Science
Livestock Systems
IJAFR, volume 52, no1, 2013

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