Economic Evaluation of Agroecological Measures to Reduce Nitrogen Surplus in Dairy Farming Systems South East Technological University (Waterford) in Ireland

This PhD opportunity at South East Technological University focuses on the economic evaluation of agroecological measures to reduce nitrogen surplus in dairy farming systems. The project is part of the HEAL (Holistic evaluation of agroecological measures on farm) initiative, which aims to address the challenge of maintaining productive and economically viable dairy systems while minimizing environmental impacts, particularly nitrogen surplus, across Ireland and Europe.

The research will investigate the role of ley cropping and alternative forage systems as strategies to reduce nitrogen inputs and associated environmental pressures. While much of European dairy production utilizes annual cropping and ley crops to improve soil structure and nutrient cycling, Irish systems are predominantly based on permanent pasture. The project will explore the introduction of annual or ley crops into Irish dairy systems, assessing their potential to increase feed production, diversify forages, and reduce reliance on external inputs without compromising output.

The core aim is to evaluate the ecological, environmental, and economic performance of both novel and conventional forage systems within dairy farming. This includes studying legume crops in rotation with annual crops, intercropped with annual crops, or as alternatives to long-term grass-only swards in grazing and forage conservation scenarios. Bioeconomic models will be developed using data from Ireland and European case studies to quantify impacts at the farm level. The research will generate evidence to support sustainable nitrogen management, contribute to improved water quality, and inform policy and farm-level decision-making.

Scholars will be registered at South East Technological University and based at Teagasc Moorepark, a leading centre for dairy, grassland, and agri-environmental research. The project offers access to experimental farm data, research infrastructure, and an interdisciplinary environment supporting systems-based analysis of agricultural sustainability. As a Walsh Scholar, you will engage with national and international research networks and collaborate with experts in agricultural economics, environmental sustainability, and farming systems analysis.

The Teagasc Walsh Scholars Programme provides a structured four-year training and development framework, supporting academic excellence and career readiness. Scholars develop advanced scientific and analytical expertise, alongside transferable skills in communication, project management, and stakeholder engagement through expert-led training, workshops, and tailored professional development. Opportunities are available to present research at national and international conferences, supporting professional networking and engagement with the wider research community. Final-year career supports focus on preparing scholars for impactful roles across research, industry, advisory services, and policy, both in Ireland and internationally. Through the Teagasc International Training Awards, scholars may undertake an international research placement of up to 12 weeks aligned with their PhD project. Outstanding achievement may be recognized through the Walsh Scholars of the Year and Gold Medal Awards.

Applicants must hold an Honours Degree (minimum 2.1) or a Master’s Degree in agricultural science, modelling, economics, or a related discipline. A postgraduate qualification and/or research experience in grassland-based agriculture is advantageous. Essential requirements include a clear understanding of Irish and European dairy farming systems, evidence of English language competency for non-native speakers, and a full, clean driving licence valid in Ireland. Desirable skills include understanding economic indicators on dairy farms, multidisciplinary research ability, excellent communication and teamwork skills, strong data handling skills, and willingness to travel for fieldwork and engage with landowners/farmers.

The position is fully funded for four years, with a stipend of €25,000 per annum and fees covered up to €6,000 per annum. The scholarship will commence between 1 May and 1 September 2026. The application deadline is Wednesday, 18 March 2026 at 4pm Irish time. For informal queries, contact Dr. Ciaran Hearn at [email protected]. Further information on the Walsh Scholars Programme is available online. Applications must be submitted via the Teagasc online application portal using project reference number 2024227; paper submissions are not accepted.