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James Humphreys

Research Officer

Research Interests

Sustainable systems of grassland-based dairy production

Current Projects

RSF11 152: Improving the productivity of heavy wet grassland for delivery of Food Harvest 2020 (Soggyland)
Carbery Greener Dairy Farms: Assessing the sustainability of milk produced on the farms of Carbery milk suppliers
Framework programme 7 GA no. 289328: Crops and animals together (CANTOGETHER); Innovative farming methods for optimized use of energy and nutrients on farms.

Education

Ph.D. in Crop Science, University College
M.Agr.Sc. in Crop Science, University College Dublin 1993
B.Agr.Sc. in General Agriculture, University College Dublin 1990

  • Burchill W., Li, D., Lanigan G.J., Williams M. and Humphreys J. (2014) Inter annual variation in nitrous oxide emissions from perennial ryegrass/white clover grassland used for dairy production. Global Change Biology, doi: 10.1111/gcb.12595
  • Tuohy P. Fenton O., Holden N.M. and Humphreys J. (2014) The effect of treading by two breeds of dairy cow with different live-weights on the soil physical properties and poaching damage on a poorly drained clay-loam soil. Journal of Agricultural Science (Cambridge), doi: 10.1017/S0021859614001099
  • Phelan P., Casey, I.A. and Humphreys, J. (2013) The effect of target post-grazing height on sward clover content, herbage yield and dairy production from grass-white clover pasture. Journal of Dairy Science, 96 (3), 1598-1611.
  • Necpálová M., Li D., Lanigan G., Casey I.A., Burchill W. and Humphreys J. (2013) Changes in soil organic carbon in a clay loam soil following ploughing and reseeding of permanent grassland under temperate moist climatic conditions. Grass and Forage Science, doi: 10.1111/gfs.12080.
  • Yan, M-J, Humphreys, J & Holden, MN (2013) The carbon footprint of pasture based milk production: can white clover make a difference? Journal of Dairy Science, 96, 857-865.

Tuffy, Kerry
Valbuena, Nuria