J. Humphreys

Teagasc - The Irish Agriculture and Food Development Authority — Ireland

Agricultural and Biological Sciences · Life Sciences

25h-index2.0kcitations106works5.02yr avg
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Research Topics

Ruminant Nutrition and Digestive Physiology(38), Soil and Water Nutrient Dynamics(33), Agriculture Sustainability and Environmental Impact(25), Soil Carbon and Nitrogen Dynamics(19), Soil and Unsaturated Flow(8)

Publications106 total

Integrating Soil Potassium Status and Fertilisation Strategies to Increase Grassland Production and Mitigate Potassium Management Induced Metabolic Disorders in Grazing Livestock
Soil Use and Management·2025· 4 citedOpen Access
Exploring the frontier of bovine protein production within territorial net zero emission targets
The Science of The Total Environment·2025· 4 citedOpen Access
Lowering the greenhouse gas and ammonia emissions from grassland-based dairy production
Agricultural Systems·2024· 3 citedOpen Access
The economic performance of grassland-based milk production using best practices to lower greenhouse gas and ammonia emissions
Agricultural Systems·2024· 4 citedOpen Access
Circularity of potassium in a grassland-based dairy farm on a clay loam soil
European Journal of Agronomy·2024· 6 citedOpen Access
Cattle production strategies to deliver protein with less land and lower environmental impact
Journal of Environmental Management·2024· 9 citedOpen Access
Factors influencing the carbon footprint of milk production on dairy farms with different feeding strategies in western Europe
Journal of Cleaner Production·2023· 24 citedOpen Access
Improved representation of cattle herd dynamics for bio-physical modelling of pathways to a climate neutral land sector
Agricultural Systems·2023· 5 citedOpen Access
Effects of grazing platform stocking rate on productivity and profitability of pasture-based dairying in a fragmented farm scenario
Journal of Dairy Science·2023· 3 citedOpen Access
The influence of soil potassium status on the productivity of docks (<i>Rumex obtusifolius</i> L.) in intensively managed temperate grassland
Grass and Forage Science·2023· 3 citedOpen Access
Fluid Optimisation in Emergency Laparotomy (FLO-ELA) Trial: study protocol for a multi-centre randomised trial of cardiac output-guided fluid therapy compared to usual care in patients undergoing major emergency gastrointestinal surgery
Trials·2023· 9 citedOpen Access
Land use and environmental quality in Ireland over two decades of contrasting agricultural trends
Biology & Environment Proceedings of the Royal Irish Academy·2023· 8 citedOpen Access
Access time to pasture under wet soil conditions: Effects on productivity and profitability of pasture-based dairying
Journal of Dairy Science·2022· 5 citedOpen Access
Effects of early spring N-fertilisation strategies on grass production and nitrogen recovery
Irish Journal of Agricultural and Food Research·2022· 2 citedOpen Access
Effectiveness of dock (<i>Rumex obtusifolius</i> L.) control in new leys and established grassland following the application of herbicides
Grass and Forage Science·2021· 4 citedOpen Access
Accumulating herbage during autumn to extend the grazing season in pasture‐based dairy systems
Grass and Forage Science·2021· 6 citedOpen Access
The effect of fertilizer nitrogen input to grass-clover swards and calving date on the productivity of pasture-based dairy production
Journal of Dairy Science·2021· 8 citedOpen Access
119. The impact of farm area fragmentation and stocking rate on the grazing platform on the length of the grazing season, milk and herbage production in pasture-based dairy systems
Animal - science proceedings·2021· 1 cited
An Analysis of the Cost of the Abatement of Ammonia Emissions in Irish Agriculture to 2030
Arrow@dit (Dublin Institute of Technology)·2020· 14 cited
Phosphorus and nitrogen losses from temperate permanent grassland on clay-loam soil after the installation of artificial mole and gravel mole drainage
The Science of The Total Environment·2018· 12 citedOpen Access
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Frequent Co-authors

I. A. Casey(14), Owen Fenton(11), Gary Lanigan(10), Nicholas M. Holden(9), Patrick Tuohy(6), Magdalena Necpálová(5), W.E. Burchill(5), P. Larry Phelan(4), M.-J. Yan(4), Karl G. Richards(4), Catherine J. Watson(4), Elena Mihailescu(4), Paul Murphy(4), P. O’Kiely(3), D. O’Brien(3), K. O’Connell(3), Dejun Li(3), M. Williams(3), W. Ryan(3), David Styles(3)