Prof. Kathy Lewis's extended publications list

• Warner, D.J., Davies, M., Hipps, N., Tzilivakis, J., Lewis, K.A. and Fountain, M. (2026) Integrated weed management reduces the environmental impact of urban amenity weed control. Weed Science. In press.
• Tzilivakis, J., Lewis, K.A., Kennedy, M.C., Ridley, L. & Garthwaite, D.G. (2026). The UK pesticide load indicator: development toward a policy tool. Journal of Environmental Science and Health, Part B: 1-18. [DOI].
• Lewis, K.A. & Tzilivakis, J. (2025). Pesticide environmental indicators and the need to minimise uncertainty. environmental SCIENTIST, 35.2: 68-75. [Download].
• Tzilivakis, J., Taylor, J.L., Green, A., Warner, D.J & Lewis, K.A. (2024). A methodological review of UK food ecolabels. Final report. Prepared for the Consortium for Labelling for the Environment, Animal welfare, and Regenerative farming (CLEAR) by the Agriculture and Environment Research Unit (AERU), University of Hertfordshire, United Kingdom. [Download].
• Badawy, M.H., Murnane, D., Lewis, K.A. & Morgan, N. (2024). The effect of formulation composition and adjuvant type on difenoconazole dislodgeable foliar residue. . Journal of Environmental Science & Health, Part B, 1–11. DOI.
• Veldkamp, A.. Li, Y., Alignier, A.M., Audet, P., Bajocco, S., Chen, X., Cheng, Y., Drinkwater, L.E., Lewis, K.A., Petit, S., Saggar, S., Toyota, K. & Zheng X. (2023). How to get your paper published in 'Agriculture, Ecosystems & Environment'. Agriculture, Ecosystems & Environment, 359: 108687. DOI [Editorial].
• Badawy, M.H., Murnane, D., Lewis, K.A. & Morgan, N. (2023). A new laboratory method to study the impact of leaf texture on pesticide dislodgeable foliar residues (DFR). Journal of Environmental Science and Health, Part B, 58(8): 555-564. DOI.
• Rainford, J, Tzilivakis, J., Garthwaite, D., Jones, G. & Lewis, K.A. (2023). Finalising a Pesticide Load Indicator for the UK: Phase 4 Report. Prepared for the Department for Environment, Food and Rural Affairs (Defra), UK, for project PC0116, by FERA Science Ltd and the Agriculture and Environment Research Unit (AERU), University of Hertfordshire, UK. [Download].
• Badawy, M.H.; Murnane, D., Lewis, K.A. & Morgan, N. (2022). Development of a New Dislodgeable Foliar Residue Analytical Laboratory Method for Pesticides. Annals of Work Exposure and Health, Preprint. DOI.
• Badawy, M.H., Morgan, N. & Lewis, K.A. (2021). Correlation between dietary and dislodgeable foliar (DFR) crop residues decline data: a proposed approach to refine non-dietary risk assessment. Regulatory Toxicology and Pharmacology, 127. DOI.
• Tzilivakis, J., Warner, D., Green, A., & Lewis, K.A. (2021). A broad-scale spatial analysis of the environmental benefits of fertiliser closed periods implemented under the Nitrates Directive in Europe. Journal of Environmental Management, 299: 113674. DOI.
• Lewis, K., Rainford, J., Tzilivakis, J., & Garthwaite, D. (2021). Application of the Danish Pesticide Load Indicator to UK arable agriculture. J Environ Qual.: 1-13. DOI.
• Lewis, K.A. & Tzilivakis, J. (2021). Implementation of the evidence‐based risk assessment for the re‐evaluation of Bisphenol A: preparatory work on cross‐sectional studies. European Food Safety Authority (EFSA), Parma. DOI.
• Lewis, K.A. & Tzilivakis, J. (2021). Review and synthesis of data on the potential environmental impact of artificial sweeteners. European Food Safety Authority (EFSA), Parma. DOI.
• Lewis, K.A., Tzilivakis, J., Green, A. & Warner, D. (2021). Procurement of nitrate accounting tools for the Poole Harbour Nutrient Management Scheme. Final report.
• Rainford, J., Tzilivakis, J., Garthwaite, D., Jones, G. & Lewis, K. (2021). Developing a UK Pesticide Load Indicator: Phase 2 Final Report. Department for Environment, Food and Rural Affairs (Defra), London.
• Tzilivakis, J., Green, A., Warner, D.J. & Lewis, K.A. (2020). Identification of approaches and measures in action programmes under Directive 91/676/EEC. Final report. Report prepared for Directorate-General Environment, European Commission, for project ENV.D.1/SER/2018/0017 by the Agriculture and Environment Research Unit (AERU), University of Hertfordshire, United Kingdom. [Download].
• Tzilivakis, J., Green, A., Warner, D.J. & Lewis, K.A. (2020). Identification of approaches and measures in action programmes under Directive 91/676/EEC. Final report: Annex A: Comparison of implementation and environmental characterisation of NAP measures. Report prepared for Directorate-General Environment, European Commission, for project ENV.D.1/SER/2018/0017 by the Agriculture and Environment Research Unit (AERU), University of Hertfordshire, United Kingdom. [Download].
• Tzilivakis, J., Green, A., Warner, D.J. & Lewis, K.A. (2020). Identification of approaches and measures in action programmes under Directive 91/676/EEC. Final report: Annex B: Nitrate Action Programme characterisation scoring and aggregation methods. Report prepared for Directorate-General Environment, European Commission, for project ENV.D.1/SER/2018/0017 by the Agriculture and Environment Research Unit (AERU), University of Hertfordshire, United Kingdom. [Download].
• Tzilivakis, J., Green, A., Warner, D.J. & Lewis, K.A. (2020). Identification of approaches and measures in action programmes under Directive 91/676/EEC. Final report: Annexes C1-28: Austria to United Kingdom. Report prepared for Directorate-General Environment, European Commission, for project ENV.D.1/SER/2018/0017 by the Agriculture and Environment Research Unit (AERU), University of Hertfordshire, United Kingdom. [Download].
• Tzilivakis, J., Green, A., Warner, D.J. & Lewis, K.A. (2020). Identification of approaches and measures in action programmes under Directive 91/676/EEC. Final report: Annex D: Risk characterisation of all Nitrate Action Programmes. Report prepared for Directorate-General Environment, European Commission, for project ENV.D.1/SER/2018/0017 by the Agriculture and Environment Research Unit (AERU), University of Hertfordshire, United Kingdom.
• Warner, D.J. & Lewis, K.A. (2019). Evaluation of the Risks of Contaminating Low Erucic Acid Rapeseed with High Erucic Rapeseed and Identification of Mitigation Strategies. Agriculture, 9(9): 190. DOI
• Lewis, K.A. & Tzilivakis, J. (2019). Wild bee toxicity data for pesticide risk assessments. Data, 4(3): 98. DOI
• Warner, D.J., Lewis, K. & Tzilivakis, J. (2019). Stormwater harvesting and flood mitigation: A UK perspective. In: Jegatheesan, V., Goonetilleke, A., van Leeuwen, J., Kandasamy, J., Warner, D., Myers, B. Bhuiyan, M., Spence, K. & Parker, G. eds. Urban Stormwater and Flood Management: Enhancing the Liveability of Cities. Cham, Switzerland: Springer Nature, pp. 29-47. DOI
• Lewis, K., Warner, D.J. & Tzilivakis, J. (2019). Stormwater harvesting. In: Jegatheesan, V., Goonetilleke, A., van Leeuwen, J., Kandasamy, J., Warner, D., Myers, B. Bhuiyan, M., Spence, K. & Parker, G. eds. Urban Stormwater and Flood Management: Enhancing the Liveability of Cities. Cham, Switzerland: Springer Nature, pp. 119-137. DOI
• Warner, D.J., Tzilivakis, J., Green, A., Charlton, D. & Lewis, K.A. (2019). Determining the climate change mitigation potential of Countryside Stewardship. World Journal of Agriculture and Soil Science Change, 1(2), DOI
• Tzilivakis, J., Warner, D., Green, A. & Lewis, K. (2019). Spatial analysis of the benefits and burdens of Ecological Focus Areas for water-related ecosystem services vulnerable to climate change in Europe. Mitig. Adapt. Strateg. Glob. Change, 24(2): 205-233. DOI
• Lewis, K.A., Tzilivakis, J., Warner, D.J. & Green, A. (2018). Agri-environmental Management in Europe: Sustainable Challenges and Solutions - From Policy Interventions to Practical Farm Management.. 5m Publishing, Sheffield, UK. ISBN: 1912178443
• Lewis, K.A. & Tzilivakis, J. (2017). Review of the published exposure data to pesticides for residents and bystanders, and for environmental risk assessment: Final report. EFSA supporting publication 2017:EN-1204, 101 pp. DOI
• Green, A., Lewis, K.A., Tzilivakis, J. & Warner D.J. (2017). Agricultural climate change mitigation: carbon calculators as a guide for decision making. International Journal of Agricultural Sustainability, 15(6): 645-661. DOI
• Lewis, K. & Tzilivakis, J. (2017). Development of a data set of pesticide dissipation rates in/on various plant matrices for the Pesticide Properties DataBase (PPDB). Data, 2(3): 28. DOI
• Green, A., Tzilivakis, J., Warner, D. & Lewis, K. (2017). Problems of Benchmarking Greenhouse Gas Emissions in Dairy Agriculture. Benchmarking: An International Journal, 24(6): 1470-1489. DOI
• Tzilivakis, J., Warner, D.J., Green, A. & Lewis, K.A. (2017). Spatial and temporal variability of greenhouse gas emissions from rural development land use operations. Mitigation and Adaptation Strategies for Global Change, 22(3): 447-467. DOI.
• Warner, D., Tzilivakis, J., Green, A. & Lewis, K. (2017). Ecological Focus Areas and beneficial insect (Coleoptera: Carabidae) conservation for pest control: habitat suitability and farm specific factors. In: G. Begg, F. Bianchi, N. Birch, B. Gerowitt, J. Holland, D. Lupi, C. Moonen, M. Ramsden & P. van Rijn (Eds.), Proceedings of the 7th IOBC-WPRS Working Group meeting on Landscape Management for Functional Biodiversity (IOBC-WPRS Bulletin vol. 122). Dundee (Scotland, UK), 29-31 March, 6-10.
• Warner, D., Tzilivakis, J., Green, A. & Lewis, K. (2017). Prioritising agri-environment options for greenhouse gas mitigation. International Journal of Climate Change Strategies and Management, 9(1): 104-122. DOI.
• Warner, D.J., Tzilivakis, J., Green, A. & Lewis, K.A. (2016). Rural Development Program measures on cultivated land in Europe to mitigate greenhouse gas emissions – regional “hotspots” and priority measures. Carbon Management, 7(3-4): 205-219. DOI.
• Lewis, K.A., Tzilivakis, J., Warner, D. & Green, A. (2016). An international database for pesticide risk assessments and management. Human and Ecological Risk Assessment: An International Journal, 22(4): 1050-1064. DOI.
• Tzilivakis, J., Warner, D.J., Green, A., Lewis, K.A. & Angileri, V. (2016). An indicator framework to help maximise potential benefits for ecosystem services and biodiversity from ecological focus areas. Ecological Indicators, 69: 859-872. DOI.
• Tzilivakis, J., Warner, D., Green, A. & Lewis, K.A. (2015). Adapting to climate change: Assessing the vulnerability of ecosystem services in Europe in the context of rural development. Mitigation and Adaptation Strategies for Global Change, 20(4): 547-572. DOI.
• Lewis, K.A., Tzilivakis, J., Green, A. & Warner, D.J. (2015). The potential of feed additives to improve the environmental impact of European livestock farming: A multi-issue analysis. International Journal of Agricultural Sustainability, 13(1): 55-68. DOI.
• Tzilivakis, J., Green, A., Lewis, K.A. & Warner, D.J (2014). Identifying integrated options for agricultural climate change mitigation. International Journal of Climate Change Strategies and Management, 6(2): 192-211. DOI.
• Warner, D.J. (2014). Towards Developing Guidance Notes for Integrated Approaches to Amenity Weed Control. Presented twice on 11 February 2014 University of Hertfordshire & 25 February 2014 Lancaster University.
• Green, A., Warner, D.J., Tzilivakis, J., & Lewis, K.A. (2014). A Comparison of Carbon Accounting Tools and an Evaluation of Their Potential for Greenhouse Gas Mitigation. In: M. Hassouna & N. Guingand (Eds.), Emission of Gas and Dust from Livestock. (pp. 237-240). RMT Élevage et Environnement, Le Rheu, France.
• Warner, D.J., Green, A., Tzilivakis, J., & Lewis, K.A. (2014). Agricultural Greenhouse Gas Emissions Reduced by Agri-Environment Schemes on Improved Grassland Grazed by Intensive Beef Cattle. In: M. Hassouna & N. Guingand (Eds.), Emission of Gas and Dust from Livestock. (pp. 237-240). RMT Élevage et Environnement, Le Rheu, France.
• Tzilivakis, J., Lewis, K.A., Green, A., Warner, D.J., Stedman, A. & Naseby, D. (2013). Review of substances/agents that have direct beneficial effect on the environment: Mode of action and assessment of efficacy. EFSA Supporting Publication 2013:EN-440. European Food Safety Authority, Parma, Italy.[Download].
• Tzilivakis, J., Lewis, K., Green, A., Warner, D., Fialkiewicz, W., Olearczyk, D., Bordet, C. & Langevin, B. (2013). Optimal Design of Climate Change Policies Through the EU's Rural Development Policy: Final Report to the European Commission. European Commission, Brussels.
• Lewis, K.A., Tzilivakis, J. & Green, A. (2013). Agricultural carbon calculators - choosing the right one. Presented at 'Producing More for Less', Birmingham, UK, 16-17 January 2013.
• Warner, D.J., Tzilivakis, J., Green, A., Slater, R.I.J. & Lewis, K.A. (2013). Measuring the Extent to Which Greenhouse Gas Emission Savings Achieved by Environmental Stewardship are Displaced On-farm - Natural England Report NECR121. Natural England, York, UK. [Download].
• Lewis, K.A., Green, A., Warner, D.J. & Tzilivakis, J. (2012). Carbon accounting tools: are they fit for purpose in the context of arable cropping. International Journal of Agricultural Sustainability, 11(2): 159-175. DOI.
• Tzilivakis, J., Green, A., Warner, D.J., McGeever,K. & Lewis, K.A. (2012). A framework for practical and effective eco-labelling of food products. Sustainability Accounting, Management and Policy Journal, 3(1): 50-73. DOI. [Outstanding Paper Award Winner at the Literati Network Awards for Excellence 2013]
• Lewis, K. & Green, A. (2011). The Pesticide Properties DataBase. Chemistry International, 33(3): 30-31. [Download].
• Tzilivakis, J., Lewis, K.A., Green, A. & Warner, D.J. (2011). A Novel Technique for Identifying Environmental Outcomes from Agricultural Practices. Impact Assessment and Project Appraisal, 29(1): 2-10. DOI.
• Tzilivakis, J., Lewis, K.A., Green, A., Warner, D.J., MacMillan, T & McGeevor, K. (2011). Effective approaches to environmental labelling of food products. Final Report for Defra Project FO0419. January 2011.
• Tzilivakis, J., Lewis, K.A., Green, A. & Warner, D.J. (2010). The Climate Change Mitigation Potential of an EU Farm: Towards a Farm-Based Integrated Assessment: Final Report for EC Project ENV.B.1/ETU/2009/0052. European Commission, Brussels.
• Warner, D.J., Lewis, K.A., Tzilivakis, J. & Green, A. (2010). Integrated Management Options for Agricultural Climate Change Mitigation (IMPACCT). Proceedings of ‘The Dundee Conference Crop Protection in Northern Britain 2010’, University of Dundee, 23 – 24 February 2010.
• Warner, D.J., Davies, M., Hipps, N., Osborne, N., Tzilivakis, J. & Lewis, K.A. (2010). Greenhouse gas emissions and energy use in UK-grown short-day strawberry (Fragaria xananassa Duch) crops. Journal of Agricultural Science, 148(6): 667-681. DOI.
• Lewis, K.A., Green, A., Tzilivakis, J. & Warner, D.J. (2010). The contribution of UK farm assurance schemes to environmental policy: Research Update Brief. University of Hertfordshire, Hatfield, UK. [Download].
• Lewis, K.A., Green, A., Tzilivakis, J. & Warner, D.J. (2010). The contribution of UK farm assurance schemes towards desirable environmental policy outcomes. International Journal of Agricultural Sustainability, 8(4): 237–249. DOI.
• Coles, A.J., Lewis, K.A. & Sims, R. (2009). Observing novel soil conditioners for carbon emissions mitigation. International Journal of Climate Change Strategies and Management, 1(3): 255-273.
• Dubus, I., Azimonti, G., Bach, M., Barriuso, E., Bidoglio, G., Bouraoui, F., Centofanti, T., Coquet, Y., Feisel, B., Fialkiewicz, W., Fowler, H., Galimberti, F., Grizzetti, B., Højberg, A., Hollis, J., Jarvis, N., Kajewski, I., Kjær, J., Krasnicki, S., Lewis, K., Lobnik, F., Lolos, P., Moeys, J., Nolan, T., Rasmussen, P., Réal, B., Reichenberger, S., Šinkovec, M., Stenemo, F., Suhadolic, M., Surdyk, N., Tzilivakis, J., Vaudour, T., Avoulidou-Theodorou, E., Windhorst, E. & Wurm, D. (2009). The FOOTPRINT Software Tools: Pesticide Risk Assessment and Management in the EU at different spatial scales. Presented at CEMEPE & SECOTOX June 2009, Mykonos, Greece.
• Lewis, K.A. (2009). FOOTPRINT Pesticide Properties Database: why and how it was developed and its future role in environmental risk assessments. Invited paper presented at 238th American Chemical Society National Meeting, Washington DC, August 16-20th 2009.
• Tzilivakis, J., Green, A. & Lewis, K.A. (2009). The FOOT-FS software system: An overview. Presented at the FOOTPRINT Final Conference, Giessen, Germany, 18-19 March 2009.
• Green, A., Lewis, K.A. & Tzilivakis, J. (2009). Pesticide Properties Database: An overview. Presented at the FOOTPRINT Final Conference, Giessen, Germany, 18-19 March 2009.
• Lewis, K.A., Green, A. & Tzilivakis, J. (2009). Pesticide Properties Database: Usage and Uptake. Presented at the FOOTPRINT Final Conference, Giessen, Germany, 18-19 March 2009.
• Lewis, K.A., Green, A. & Tzilivakis, J. (2009). The Pesticide Properties DataBase: Beyond FOOTPRINT. Presented at the FOOTPRINT Final Conference, Giessen, Germany, 18-19 March 2009.
• Lewis K.A., Tzilivakis J, Green, A., Warner, D.J. & Coles A.J. (2008) Farm Assurance Schemes – Can they improve farming standards? British Food Journal, 110(11): 1088-1105.
• Coles, A.J.C., Sims, R.E.H. & Lewis, K.A. (2008). Woody Biomass Energy Crops: possibilities for physical and biological carbon sequestration. Poster presented at Agriculture and the Environment VII, Land Management in a Changing Environment, 26-27 March 2008, Edinburgh.
• Tzilivakis, J. & Lewis, K.A. (2007). The Agricultural Document Library (ADLib) and its applications. Proceedings of the European Federation for IT in Agriculture (EFITA) conference 2-5 July 2007, Glasgow.
• Lewis, K., Green A. & Tzilivakis J. (2007). A Pesticide database holding fate and ecological values. Report DL24 of the FP6 EU-funded FOOTPRINT project, 28p.
• Tzilivakis, J. & Lewis, K.A. (2007). The Beta version of FOOT-FS. Report DL26 of the FP6 EU-funded FOOTPRINT project, 28p.
• Green, A., Winspear, R. & Lewis, K. (2007). Integrating Strategies for Wildlife Management into Agri-environment Payment Schemes: A Decision Support Approach. EFITA/WCCA Conference Glasgow, July 2007.
• Lewis, K., Green, A. & Tzilivakis, J. (2007). Development of an improved pesticide properties database for risk assessment applications. EFITA/WCCA Conference Glasgow, July 2007.
• Green, A., Lewis, K.A., Tzilivakis, J. Dubus, I.G. & Coles, A. (2007). FOOTPRINT - Creating tools for Pesticide Risk Assessment and Management in Europe. Poster presented at Voluntary Initiative Meeting, SCI York.
• van der Werf, H.M.G., Tzilivakis, J., Lewis, K.A. & Basset-Mens, C. (2007). Environmental impacts of farm scenarios according to five assessment methods. Agriculture, Ecosystems and Environment, 118: 327-338.
• Dubus, I., Azimonti, G., Bach, M., Barriuso, E., Bidoglio, G., Bouraoui, F., Fialkiewicz, W., Fowler, H., François, O., Højberg, A., Hollis, J., Jarvis, N., Kajewski, I., Kjær, J., Lewis, K., Lobnik, F., Lolos, P., Réal, B., Reichenberger, S., Stenemo, F., Suhadolc, M. & Vavoulidou-Theodorou. E. (2006). Developing functional tools for pesticide risk assessment and management at various scales in Europe: the EU project FOOTPRINT. SCI Conference. Pesticide Behaviour in Soils, Water and Air. Warwick.
• Tzilivakis, J., Jaggard, K., Lewis, K.A., May, M. & Warner, D.J. (2005). An assessment of the energy inputs and greenhouse gas emissions in sugar beet (Beta vulgaris) production in the UK. Agricultural Systems, 85: 101-119.
• Tzilivakis, J., Jaggard, K., Lewis, K.A., May, M. & Warner, D.J. (2005). Environmental impact and economic assessment for UK sugar beet production systems. Agriculture, Ecosystems and Environment, 107: 341-358.
• Tzilivakis, J., Lewis K.A. & Williamson, A.R. (2005). A prototype framework for assessing risks to soil functions. EIA Review, 25: 181-195.
• Lewis, K.A., Tzilivakis, J. & Green, A. (2004). Challenges and opportunities for land managers to achieve a more integrated approach to land and water management. BCPC Conference. Glasgow November 2004.
• Jaggard, K., Tzilivakis, J., Warner, D.J. & Lewis, K.A. (2004) Beet and the environment. British Sugar Beet Review, 72(2): 34-37.
• Lewis, K.A. & Green. A. (2004). Managing on-farm environmental impact using EMA. Proceedings of Crop Protection in Northern Britain. 24-25 February 2004, University of Dundee, Scotland, UK. Scottish Crop Research Institute, Invergowrie, Scotland, UK.
• Lewis, K.A. & Tzilivakis, J. (2004). New initiatives for maintaining on-farm environmental protection. In Aspects of Applied Biology 72, Advances in Applied Biology: providing new opportunities for consumers and producers in the 21st century. pp 209-216 AAB centenary 2004. Oxford.
• Tzilivakis, J. & Lewis, K.A. (2004). The development and use of farm level indicators in England. Sustainable Development, 12: 107-120.
• Tzilivakis, J., Turley, D.B., Ogilvy, S.E., Lewis, K.A. & Lawson, K. (2004). Assessing the environmental impact of crop protection strategies for integrated farming systems. Agronomie, 24: 67-76.
• Brown, C.D., Hart, A., Lewis, K.A. & Dubus, I.G. (2003). p-EMA (I): simulating the environmental fate of pesticides for a farm-level risk assessment system. Agronomie, 23: 67-74.
• Hart, A., Brown, C.D., Lewis, K.A. & Tzilivakis, J. (2003). p-EMA (II): evaluating ecological risks of pesticides for a farm-level risk assessment system. Agronomie, 23: 75-84.
• Lewis, K.A., Brown, C.D., Hart, A. & Tzilivakis, J. (2003). p-EMA (III): overview and application of a software system designed to assess the environmental risk of agricultural pesticides. Agronomie, 23L 85-96.
• Warner, D.J., Tzilivakis, J., Hipps, N., Davies, M., Osborne, N., & Lewis, K.A. (2003). Environmental impact assessment of the UK strawberry crop. Proceedings of the International Fertiliser Society and Dahlia Greidinger Symposium. Izmir, Turkey, 7 – 10 December 2003, pages 396 - 398.
• Calvert, A., Hall, A.M. & Lewis, K.A. (2002). Environmental auditing of the hardy nursery stock sector. Presented at the SCI Conference on Growing Media in Horticulture - Quality Requirements, at the SCI, Belgrave Square, London, February 19th 2002.
• Green, A., Lewis, K.A., Tzilivakis, J. & Warner, D.J. (2002). Indicators of agricultural sustainability - are they relevant to grassland management? Proceedings of the British Grassland Society Winter Conference - Profitable Grass and Forage: Meeting the needs of the farmer and sosciety. 27-28 November 2002, Stafford, UK. The British Grassland Society, Reading, UK.
• Reus, J., Leendertse, P., Bockstaller, C., Fomsgaard, I., Gutsche, V., Lewis, K., Nilsson, C., Pussemier, L.,Trevisan, M., Van der Werf, H., Alfarroba, F., Blümel, S., Isart, J., McGrath, D. & Seppälä, T. (2002). Comparison and evaluation of eight pesticide environmental risk indicators developed in Europe and recommendations for future use. Agriculture, Ecosystems and Environment, 90: 177–187.
• Tzilivakis, J., Jaggard, K., Lewis, K.A., May, M. & Warner, D.J. (2002). Environmental assessment of sugar beet production. Proceedings of the 65th IIRB (International Institute for Beet Research) Congress, Brussels, February 13-14 2002.
• Lewis, K.A., Tzilivakis, J., Brown, C.D. & Hart, A. (2001). On-farm risk assessment of agricultural pesticides. Proceedings of the Third European Conference of the European Federation for Information Technology in Agriculture, Food and the Environment (vol. 1). June 18-20, 2001, Montpellier, France: 37-41.
• Tzilivakis, J. & Lewis, K.A. (2001). The development of software to support planning conversion to organic agriculture. Proceedings of the Third European Conference of the European Federation for Information Technology in Agriculture, Food and the Environment (vol. 1). June 18-20, 2001, Montpellier, France: 119-123.
• Lewis, K.A. & Tzilivakis, J. (2000). The role of the EMA software in integrated crop management and its commercial uptake. Pest Management Science, 56: 969-973.
• Reus J., Leendertse P., Brockstaller C., Fomsgaard I., Gutsche V., Lewis K.A., Nilsson C., Pussemier L., Trevisan M., van der Werf H., Alfarroba F., Blumel S., Isart J., McGrath D. & Seppala T. (2000). Comparing environmental risk indicators for pesticides: results of the European CAPER Project. Symposium Pesticide Chemistry, Paper XI.
• ECOTEC Research and Consultancy, University of Hertfordshire, Central Science Laboratory & the University of Newcastle upon Tyne. (1999). Design of a Tax or Charge Scheme for Pesticides, ISBN 1 851121 60 9, DETR.
• Hansen O.M., Breembroek, J.A., Lewis K.A. & Janssens S.R.M. (1999). Nutrient Record-Keeping and Reporting for Legislation, Crop Assurance and Traceability. Invited paper to the International Fertiliser Society Conference, Robinson College, Cambridge 8-10 December. Proceedings No. 440 ISBN 0 85310 075 6.
• Lewis, K.A. (1999). Pesticide environmental performance indicators - pesticide assessment with the EMA II package (Environmental Management For Agriculture) presented at the CAPER conference 18-20 March 1999, Amsterdam, The Netherlands and published in the CAPER Final report by CLM March 1999.
• Lewis, K.A., Newbold, M.J. & Tzilivakis, J. (1999). Developing an emissions inventory from farm data. Journal of Environmental Management, 55: 183-197.
• Tzilivakis, J., Broom, C., Lewis, K.A., Tucker, P., Drummond, C. & Cook, R. (1999). A strategic environmental assessment method for agricultural policy in the UK. Land Use Policy, 16: 223-234.
• Tzilivakis, J. & Lewis, K.A. (1999). Environmental Management for Agriculture (EMA) and Sustainable Agriculture. In Schiefer, G. et al. (Eds.) Perspectives of Modern Information and Communication Systems in Agriculture, Food Production and Environmental Control (Volume A) Proceedings of the Second European Conference of the European Federation for Information Technology in Agriculture, Food and the Environment. September 27-30, 1999, Bonn, Germany: 175-185.
• Lewis, K.A. & Bardon, K.S. (1998). A computer based informal environmental management system for agriculture. Journal of Environmental Modelling and Software, 13: 123-127.
• Lewis, K.A., Newbold, M.J. & Thomas, M.R. (1998). Pesticide policies, practices and initiatives - can the UK's know-how be transferred to Chile? International Conference on Pesticide use in Developing Countries: Impact on health and the environment, Costa Rica February 1998.
• Lewis, K.A. & Tzilivakis, J. (1998). Evaluating a technique used to measure environmental performance within agriculture - Case studies. Eco-management and Auditing, 5(3): 126-135.
• Lewis, K.A. Newbold, M.J. & Broom, C.E. (1997). An eco-rating system for optimising pesticide use at farm level: Part 2 evaluation, examples and piloting. Journal of Agricultural Engineering, 68: 281-289.
• Lewis, K.A., Newbold, M.J., Hall, A.M. & Broom, C.E. (1997). An eco-rating system for optimising pesticide use at farm level: Part 1 theory and development. Journal of Agricultural Engineering, 68: 275-280.
• Lewis, K.A., Tzilivakis, J., Skinner, J.A. & Bardon, K.S. (1997). Environmental best practice advisory system for agriculture. EFITA Conference, Copenhagen, Denmark, June 1997.
• Lewis, K.A., Tzilivakis, J., Skinner, J.A., Finch, J., Kaho, T., Newbold, M.J. & Bardon, K.S. (1997). Scoring and ranking farmland conservation activities to evaluate environmental performance and encourage sustainable farming. Sustainable Development, 5(2): 71-78.
• Newbold, M.J., Lewis, K.A., Tzilivakis, J., Finch, J., Kaho, T., Skinner, J.A. & Bardon, K.S. (1997). The options for informal environmental management: The agricultural industry highlighted. Eco-Management and Auditing, 4(1): 22-27.
• Skinner, J.A., Lewis, K.A., Bardon K.S., Tucker, P., Catt, J.A. & Chambers, B.J. (1997). An overview of the environmental impacts of agriculture in the UK. Journal of Environmental Management, 50: 111-128.
• Tzilivakis, J., Broom, C.E. & Lewis, K.A. (1997). In search of sustainable CAP: Assessing the environmental impacts of agricultural policy. European Environment Conference, September 1997, Leeds.
• Lewis, K.A., Newbold, M.J. & Bardon, K.S. (1996). A decision support system for environmental management of agriculture: An eco-rating system for pesticide use. Poster Session on Food Sustainability. Conference Proceedings Eco-Informa '96, Lake Buena Vista, Florida, November 1996.
• Johnston, A.R. & Lewis, K.A. (1995). The Effectiveness of Environmental Performance Measures in Ensuring Sustainable Development: The Water and Agricultural Industries Highlighted. Sustainable Development Journal, 3(3): 140-148.
• Tucker, P., Lewis, K.A. & Skinner, J.A. (1995). Environmental Management in Agriculture: An Expert System Approach. Eco-Management and Auditing Journal, 3(1): 9-13.

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To request copies of the above papers please email: k.a.lewis@herts.ac.uk.