J. Humphreys

发表

A review of nitrous oxide mitigation by farm nitrogen management in temperate grassland-based agriculture.

C. Watson, N. Holden, M. Yan, 2013, Journal of environmental management.

Evaluation of process and input–output-based life-cycle assessment of Irish milk production

N. Holden, M. Yan, J. Humphreys, 2013, The Journal of Agricultural Science.

Forage Legumes for Grazing and Conserving in Ruminant Production Systems

E. O'riordan, A. Moloney, J. Humphreys, 2015 .

An evaluation of life cycle assessment of European milk production.

N. Holden, M. Yan, J. Humphreys, 2011, Journal of environmental management.

Nitrogen balance and use efficiency on twenty-one intensive grass-based dairy farms in the South of Ireland

I. Casey, J. Humphreys, P. Murphy, 2014, The Journal of Agricultural Science.

The effect of local climate and soil drainage on the environmental impact of grass-based milk production

N. Holden, Pooja Sharma, J. Humphreys, 2017, The International Journal of Life Cycle Assessment.

Life cycle assessment of milk production from commercial dairy farms: the influence of management tactics.

N. Holden, M. Yan, J. Humphreys, 2013, Journal of dairy science.

Nutrient management on intensive dairy farms in the southwest of Ireland

J. Humphreys, M. Tracey, K. McNamara, 2006 .

Economic impacts of nitrogen and phosphorus use efficiency on nineteen intensive grass-based dairy farms in the South of Ireland

I. Casey, J. Humphreys, P. Murphy, 2015 .

Farm-gate nitrogen balances on intensive dairy farms in the south west of Ireland

J. Humphreys, R. Browne, M. Treacy, 2008 .

Access time to pasture under wet soil conditions: Effects on productivity and profitability of pasture-based dairying

N. Holden, I. Casey, J. Humphreys, 2022, Journal of Dairy Science.

The environmental impact of dairy production on poorly drained soils under future climate scenarios for Ireland.

N. Holden, Pooja Sharma, J. Humphreys, 2018, Journal of environmental management.

The effects of treading by two breeds of dairy cow with different live weights on soil physical properties, poaching damage and herbage production on a poorly drained clay-loam soil

N. Holden, O. Fenton, J. Humphreys, 2014, The Journal of Agricultural Science.

Nitrogen flows and balances in four grassland‐based systems of dairy production on a clay‐loam soil in a moist temperate climate

I. Casey, J. Humphreys, K. O'Connell, 2008 .

Comparative Effects of Organic Manures on Spring Herbage Production of a Grass/White Clover (c.v. Grasslands Huia) Sward

J. Humphreys, N. Culleton, T. Jansen, 1997 .

Aspects of the role of cattle slurry in dispersal and seedling establishment of Rumex obtusifolius seed in grassland.

E. O'riordan, J. Humphreys, N. Culleton, 1997 .

Good water status: the integration of sustainable grassland production and water resources in Ireland.

R. Moles, O. Fenton, P. Jordan, 2009 .

Environmental impacts of alternative agricultural uses of poorly drained farm land in Ireland.

N. Holden, Pooja Sharma, J. Humphreys, 2018, The Science of the total environment.

Comparisons of biological nitrogen fixation in association with white clover (Trifolium repens L.) under four fertiliser nitrogen inputs as measured using two 15N techniques

M. Williams, G. Lanigan, J. Humphreys, 2014, Plant and Soil.

Comparison of milk production from clover-based and fertilizer-N-based grassland on a clay-loam soil under moist temperate climatic conditions.

J. Humphreys, 2009 .

Effect of ploughing and reseeding of permanent grassland on soil N, N leaching and nitrous oxide emissions from a clay-loam soil

I. Casey, J. Humphreys, M. Necpálová, 2013, Nutrient Cycling in Agroecosystems.

The effect of fertilizer nitrogen input to grass-clover swards and calving date on the productivity of pasture-based dairy production.

I. Casey, K. Scully, J. Humphreys, 2021, Journal of dairy science.

The effect of target postgrazing height on sward clover content, herbage yield, and dairy production from grass-white clover pasture.

I. Casey, J. Humphreys, P. Phelan, 2013, Journal of dairy science.

Soil surface N balances and soil N content in a clay-loam soil under Irish dairy production systems

I. Casey, J. Humphreys, P. Phelan, 2013, Nutrient Cycling in Agroecosystems.

Effect of ploughing and reseeding of permanent grassland on soil N, N leaching and nitrous oxide emissions from a clay-loam soil

I. Casey, J. Humphreys, M. Necpálová, 2013, Nutrient Cycling in Agroecosystems.

Amount and quality of grass harvested for first‐cut silage for differing spring‐grazing frequencies of two mixtures of perennial ryegrass cultivars with contrasting heading date

J. Humphreys, P. O'kiely, 2006 .

Variations in travel time for N loading to groundwaters in four case studies in Ireland: implications for policy makers and regulators.

O. Fenton, K. Richards, J. Humphreys, 2009 .

Effects of seed-borne Microdochium nivale on establishment and grain yield of winter-sown wheat.

J. Humphreys, B. Cooke, T. Storey, 1995 .

The effects of simulated summer‐to‐winter grazing management on herbage production in a grass–clover sward

I. Casey, J. Humphreys, P. Phelan, 2014 .

MAJOR AND MICRO NUTRIENT ADVICE FOR PRODUCTIVE AGRICULTURAL CROPS

Rogier P.O. Schulte, Pat Dillon, Barry Murphy, 2008 .

The effects of treading by dairy cows on soil properties and herbage production for three white clover‐based grazing systems on a clay loam soil

I. Casey, J. Humphreys, P. Phelan, 2013 .

An economic comparison of systems of dairy production based on N-fertilized grass and grass-white clover grassland in a moist maritime environment

I. Casey, J. Humphreys, E. Mihailescu, 2012 .

Effects of early spring N-fertilisation strategies on grass production and nitrogen recovery

I. Casey, J. Humphreys, K. McNamara, 2022, Irish Journal of Agricultural and Food Research.

Comparisons of biological nitrogen fixation in association with white clover (Trifolium repens L.) under four fertiliser nitrogen inputs as measured using two 15N techniques

M. Williams, G. Lanigan, J. Humphreys, 2014, Plant and Soil.

The carbon footprint of pasture-based milk production: can white clover make a difference?

N M Holden, N. Holden, M. Yan, 2013, Journal of dairy science.

Measured and Simulated Nitrous Oxide Emissions from Ryegrass- and Ryegrass/White Clover-Based Grasslands in a Moist Temperate Climate

Dejun Li, G. Lanigan, J. Humphreys, 2011, PloS one.

The effect of organic management strategies on dairy production in clover-based grassland.

I. Casey, N. Wrage, J. Schellberg, 2010 .

Farm-gate phosphorus balances and soil phosphorus concentrations on intensive dairy farms in the south-west of Ireland.

J. Humphreys, K. McNamara, M. Treacy, 2014 .

The effects of rotation length and cutting height in autumn on the productivity of a perennial ryegrass-white clover sward

J. Humphreys, P. Phelan, B. Keogh, 2009 .

Seasonality of nitrogen uptake, apparent recovery of fertilizer nitrogen and background nitrogen supply in two Irish grassland soils

C. Watson, J. Humphreys, P. Murphy, 2013 .

Changes in soil organic carbon in a clay loam soil following ploughing and reseeding of permanent grassland under temperate moist climatic conditions

I. Casey, Dejun Li, G. Lanigan, 2014 .

Greenhouse gas emissions from temperate permanent grassland on clay-loam soil following the installation of artificial drainage

O. Fenton, P. Tuohy, M. Williams, 2019, Agriculture, Ecosystems & Environment.

Effectiveness of dock ( Rumex obtusifolius L.) control in new leys and established grassland following the application of herbicides

I. Casey, J. Humphreys, Timothy O Donovan, 2021, Grass and Forage Science.

Soil potassium supply and Rumex obtusifolius and Rumex crispus abundance in silage and grazed grassland swards

J. Humphreys, N. Culleton, T. Storey, 1999 .

Controlling docks (Rumex obtusifolius L.) using herbicides applied to seedling or established grassland.

I. Casey, J. Humphreys, T. O'Donovan, 2015 .

An appraisal of carbon footprint of milk from commercial grass-based dairy farms in Ireland according to a certified life cycle assessment methodology

Laurence Shalloo, Donal O’Brien, Padraig Brennan, 2014, The International Journal of Life Cycle Assessment.

N leaching to groundwater from dairy production involving grazing over the winter on a clay-loam soil.

I. Casey, O. Fenton, J. Humphreys, 2012, The Science of the total environment.

Quantities of mineral N in soil and concentrations of nitrate‐N in groundwater in four grassland‐based systems of dairy production on a clay‐loam soil in a moist temperate climate

C. Watson, I. Casey, O. Fenton, 2008 .

Nutrient issues on Irish farms and solutions to lower losses

J. Humphreys, 2008 .

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

P. Johnston, O. Fenton, K. Richards, 2012 .

Interim report on greenhouse gas emissions from Irish agriculture

R. Schulte, S. Foreman, J. Finnan, 2015 .

Visual drainage assessment: A standardised visual soil assessment method for use in land drainage design in Ireland

N. Holden, O. Fenton, J. Humphreys, 2016 .

Corrigendum

E. O'riordan, A. Moloney, J. Humphreys, 2015 .

Interannual variation in nitrous oxide emissions from perennial ryegrass/white clover grassland used for dairy production

Dejun Li, G. Lanigan, J. Humphreys, 2014, Global change biology.

A system N balance for a pasture-based system of dairy production under moist maritime climatic conditions

Michael Williams, Dejun Li, G. Lanigan, 2016 .

Phosphorus balance and use efficiency on 21 intensive grass-based dairy farms in the South of Ireland

I. Casey, J. Humphreys, P. Murphy, 2014, The Journal of Agricultural Science.

Mixed Agricultural Pollutant Mitigation Using Woodchip/Pea Gravel and Woodchip/Zeolite Permeable Reactive Interceptors

G. Lanigan, O. Fenton, M. Healy, 2015, Water, Air, & Soil Pollution.

Runoff and subsurface drain response from mole and gravel mole drainage across episodic rainfall events

N. Holden, O. Fenton, J. Humphreys, 2016 .

Mole drain performance in a clay loam soil in Ireland

N. Holden, O. Fenton, J. Humphreys, 2015 .