Mary Harty1, Patrick J Forrestal2, Dominika J Krol3, Gary J Lanigan4, Stan Lalor5, Deirdre Hennessy6, Catherine Watson7 and Karl G Richards4, (1)Johnstown Castle, TEAGASC, Wexford, IRELAND, (2)Environment, Soils and Land-Use, TEAGASC, Wexford, COUNTY WEXFORD, IRELAND, (3)Environment, Soils and Land Use, TEAGASC, Wexford, IRELAND, (4)Environment Soils and Landuse, Teagasc, Wexford, Ireland, (5)Teagasc, Wexford, Ireland, (6)Teagasc, Moorepark Animal & Grassland Research and Innovation Centre, Fermoy, Ireland, (7)Agri-Food and Biosciences Institute (AFBI), Belfast BT9 5PX, Northern Ireland