| Forage legumes for grazing and conserving in ruminant production systems P Phelan, AP Moloney, EJ McGeough, J Humphreys, J Bertilsson, ... Critical Reviews in Plant Sciences 34 (1-3), 281-326, 2015 | 251 | 2015 |
| An evaluation of life cycle assessment of European milk production MJ Yan, J Humphreys, NM Holden Journal of environmental management 92 (3), 372-379, 2011 | 185 | 2011 |
| Energy demand on dairy farms in Ireland J Upton, J Humphreys, PWGG Koerkamp, P French, P Dillon, IJM De Boer Journal of dairy science 96 (10), 6489-6498, 2013 | 112 | 2013 |
| An appraisal of carbon footprint of milk from commercial grass-based dairy farms in Ireland according to a certified life cycle assessment methodology D O’Brien, P Brennan, J Humphreys, E Ruane, L Shalloo The International Journal of Life Cycle Assessment 19, 1469-1481, 2014 | 84 | 2014 |
| Groundwater: A pathway for terrestrial C and N losses and indirect greenhouse gas emissions MMR Jahangir, P Johnston, MI Khalil, D Hennessy, J Humphreys, ... Agriculture, ecosystems & environment 159, 40-48, 2012 | 71 | 2012 |
| Nitrogen flows and balances in four grassland‐based systems of dairy production on a clay‐loam soil in a moist temperate climate J Humphreys, K O’connell, IA Casey Grass and Forage Science 63 (4), 467-480, 2008 | 68 | 2008 |
| Life cycle assessment of milk production from commercial dairy farms: the influence of management tactics MJ Yan, J Humphreys, NM Holden Journal of dairy science 96 (7), 4112-4124, 2013 | 67 | 2013 |
| The carbon footprint of pasture-based milk production: Can white clover make a difference? MJ Yan, J Humphreys, NM Holden Journal of Dairy Science 96 (2), 857-865, 2013 | 65 | 2013 |
| A marginal abatement cost curve for Irish agriculture R Schulte, P Crosson, T Donnellan, N Farrelly, J Finnan, S Lalor, ... Teagasc submission to the National Climate Policy Development Consultation …, 2012 | 60 | 2012 |
| Farm-gate nitrogen balances on intensive dairy farms in the south west of Ireland M Treacy, J Humphreys, KM Namara, R Browne, CJ Watson Irish Journal of Agricultural and Food Research, 105-117, 2008 | 58 | 2008 |
| Interannual variation in nitrous oxide emissions from perennial ryegrass/white clover grassland used for dairy production W Burchill, D Li, GJ Lanigan, M Williams, J Humphreys Global Change Biology 20 (10), 3137-3146, 2014 | 57 | 2014 |
| Measured and simulated nitrous oxide emissions from ryegrass-and ryegrass/white clover-based grasslands in a moist temperate climate D Li, G Lanigan, J Humphreys PloS one 6 (10), e26176, 2011 | 57 | 2011 |
| A review of nitrous oxide mitigation by farm nitrogen management in temperate grassland-based agriculture D Li, CJ Watson, MJ Yan, S Lalor, R Rafique, B Hyde, G Lanigan, ... Journal of environmental management 128, 893-903, 2013 | 56 | 2013 |
| Effects of seed-borne Microdochium nivale on establishment and grain yield of winter-sown wheat. J Humphreys, BM Cooke, T Storey Plant Varieties & Seeds 8 (2), 107-117, 1995 | 54 | 1995 |
| An economic comparison of systems of dairy production based on N‐fertilized grass and grass‐white clover grassland in a moist maritime environment J Humphreys, E Mihailescu, IA Casey Grass and Forage Science 67 (4), 519-525, 2012 | 53 | 2012 |
| Comparisons of biological nitrogen fixation in association with white clover (Trifolium repens L.) under four fertiliser nitrogen inputs as measured using two 15N … W Burchill, EK James, D Li, GJ Lanigan, M Williams, PPM Iannetta, ... Plant and soil 385, 287-302, 2014 | 51 | 2014 |
| Changes in soil organic carbon in a clay loam soil following ploughing and reseeding of permanent grassland under temperate moist climatic conditions M Necpálová, D Li, G Lanigan, IA Casey, W Burchill, J Humphreys Grass and Forage Science 69 (4), 611-624, 2014 | 51 | 2014 |
| Comparison of milk production from clover-based and fertilizer-N-based grassland on a clay-loam soil under moist temperate climatic conditions J Humphreys, IA Casey, AS Laidlaw Irish Journal of Agricultural and Food Research, 189-207, 2009 | 49 | 2009 |
| Nutrient and trace element advice for grassland, tillage, vegetable and fruit crops BS Coulter, OT Carton, N Culleton, M Herlihy, S McCormack, K O’Connell, ... Teagasc, Johnstown Castle, Wexford, Ireland, 2004 | 42 | 2004 |
| Soil potassium supply and Rumex obtusifolius and Rumex crispus abundance in silage and grazed grassland swards HUMPHREYS, JANSEN, CULLETON, MACNAEIDHE, STOREY Weed research 39 (1), 1-13, 1999 | 42 | 1999 |
