J. Humphreys

Forage Legumes for Grazing and Conserving in Ruminant Production Systems

P. Larry Phelan, A.P. Moloney, E.J. McGeough et al. · Critical Reviews in Plant Sciences · 2014 · 204 citations

Main Disadvantages, Animal Nutrition, Animal Science +12

Energy demand on dairy farms in Ireland

John Upton, J. Humphreys, P.W.G. Groot Koerkamp et al. · Journal of Dairy Science · 2013 · 86 citations · Full text

Engineering, Energy Efficiency, Energy Markets +20

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, Padraig Brennan, J. Humphreys et al. · The International Journal of Life Cycle Assessment · 2014 · 75 citations · Full text

Groundwater: A pathway for terrestrial C and N losses and indirect greenhouse gas emissions

M. M. R. Jahangir, Patrick Johnston, M. I. Khalil et al. · Agriculture Ecosystems & Environment · 2012 · 65 citations

Organic Geochemistry, Biogeochemistry, Greenhouse Gases +7

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, I. A. Casey · Grass and Forage Science · 2008 · 62 citations

Engineering, N Inputs, Agricultural Economics +22