John Roy Porter
Professor, emeritus
Section for Crop Sciences
Højbakkegård Allé 13
2630 Taastrup
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Det europæiske fødevaresystem og fremtidens scenarier for landbrug
Porter, John Roy, Porter, H. R. B. & Olesen, J. E., 2010, In: Geografisk Orientering. 2Research output: Contribution to journal › Journal article › Research
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Denmark: agriworld
Porter, John Roy, 1996, In: The ¤furrow. 101, 2, 2 p.Research output: Contribution to journal › Journal article › Communication
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Demographic approaches to studies of canopy development in plants
Porter, John Roy, 1996, In: Biomass & Bioenergy. (2-3), p. 207-214 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Decoupling of greenhouse gas emissions from global agricultural production: 1970-2050
Bennetzen, E. H., Smith, P. & Porter, John Roy, 2016, In: Global Change Biology. 22, 2, p. 763-781 19 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Deconstructing crop processes and models via identities
Porter, John Roy & Christensen, Svend, 2013, In: Plant, Cell and Environment. 36, 11, p. 1919-1925 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Deconstructing agronomic resource use efficiencies to increase food production
Porter, John Roy, Thorburn, P. J., Brown, H. E., Teixeira, E. I., Moot, D. J., Mills, A. & Christensen, Svend, 2021, In: Italian Journal of Agronomy. 16, 3, 6 p., 1694.Research output: Contribution to journal › Journal article › Research › peer-review
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Data requirements for crop modelling - applying the learning curve approach to the simulation of winter wheat flowering time under climate change
Montesino San Martin, M., Wallach, D., Olesen, J. E., Challinor, A. J., Hoffman, M. P., Koehler, A. K., Roetter, R. P. & Porter, John Roy, 2018, In: European Journal of Agronomy. 95, p. 33-44 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Danish agriculture and its sustainability: a profile
Porter, John Roy & Hjort Petersen, E., 1997, In: Ambio. 26, 7, p. 462-465 4 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Crop-climate models need an overhaul
Rötter, R. P., Carter, T. R., Olesen, J. E. & Porter, John Roy, 2011, In: Nature. 1, p. 175-177 3 p.Research output: Contribution to journal › Letter › Research › peer-review
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Crop responses to climatic variation: Papers of a Discussion Meeting held at The Royal Society on 26 and 27 April 2005 Food crops an a changing climate
Porter, John Roy & Semenov, M. A., 2005, In: Philosophical Transactions of the Royal Society of London. Biological Sciences. 360, 1463, p. 2021-2035 15 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Crop models, CO2, and Climate Change
Ewert, F., Porter, John Roy & Rounsevell, M. D. A., 2007, In: Science. 315, 5811, p. 459 1 p.Research output: Contribution to journal › Letter › Research › peer-review
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Crop modelling for integrated assessment of risk to food production from climate change
Ewert, F., Rötter, R. P., Bindi, M., Webber, H., Trnka, M., Kersebaum, K. C., Olesen, J. E., van Ittersum, M. K., Janssen, S., Rivington, M., Semenov, M. A., Wallach, D., Porter, J. R., Stewart, D., Verhagen, J., Gaiser, T., Palosuo, T., Tao, F., Nendel, C., Roggero, P. P. & 2 others, , 2015, In: Environmental Modelling & Software. 72, p. 287-303 17 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Creating a Nordic regional research network in agroecology: links to MSc education
Francis, C., Breland, T. A., Lieblein, G., Salomonsen, L., Geber, U., Sriskandarajah, N., Langer, Vibeke, Porter, John Roy & Helenius, J., 2006, Changing European farming systems for a better future: New visions for rural areas. Langeveld, H. & Röling, N. (eds.). Wageningen Academic Publishers, p. 320-324 5 p.Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research
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Copenhagen experiments, improvement of the AFRCWHEAT model and application to climate change scenarios
Wollenweber, B., Schellberg, J. & Porter, John Roy, 1997, Ikke angivet. European Commission, Fourth Framework Programme, DGXII, 5 p.Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research
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Contribution of crop models to adaptation in wheat
Chenu, K., Porter, John Roy, Martre, P., Basso, B., Chapman, S. C., Ewert, F., Bindi, M. & Asseng, S., 2017, In: Trends in Plant Science. 22, 6, p. 472-490 19 p.Research output: Contribution to journal › Review › Research › peer-review
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Considering agriculture in IPCC assessments
Porter, John Roy, Howden, M. & Smith, P., 2017, In: Nature Climate Change. 7, 10, p. 680-683 4 p.Research output: Contribution to journal › Comment/debate › Research › peer-review
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Conseil scientifique national de I'INRA: rapport de synthése du groupe de travail sur la propriété intellectuelle sur les connaissances dans le secteur végétal
Barbier-Brygoo, H., Chilliard, Y., Durand, J., Elmayan, T., Goldringer, I. & Porter, John Roy, 2014, INRA. 64 p.Research output: Book/Report › Report › Research › peer-review
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Conceptual foundation for innovative education in agroecology
Francis, C., Helenius, J., Lieblein, G., Porter, John Roy, Olsen, H. & Salomonsson, L., 2000, Integrating concepts of sustainability into education for agriculture and rural development. Bor, W. V. D., Holen, P., Wals, A. & Filho, W. L. (eds.). Frankfurt am Main: Peter Lang, Vol. 6. p. 125-137 13 p. (Environmental education, communication and sustainability).Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Comments on "Testing winter wheat simulation models predictions against observed UK grain yields" by Landau et al. (1998)
Jamieson, P. D., Porter, John Roy, Semenov, M. A., Brooks, R. J., Ewert, F. & Ritchie, J. T., 1999, In: Agricultural and Forest Meteorology. 96, p. 157-161 5 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Combining af disease model with a crop phenology model to assess and map pest risk; Karnal bunt disease (Tilletia indica) of wheat in Europe
Baker, R. H. A., Sansford, C. E., Gioli, B., Miglietta, F., Porter, John Roy & Ewert, F., 2005, Ikke angivet. Christian Ejlers, 6 p.Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research
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Climate variability and crop yields in Europe
Porter, John Roy & Semenov, M. A., 1999, In: Nature. 400, 6746, p. 724 1 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Climate change impact and adaptation for wheat protein
Asseng, S., Martre, P., Maiorano, A., Roetter, R. P., O'Leary, G. J., Fitzgerald, G. J., Girousse, C., Motzo, R., Giunta, F., Babar, M. A., Reynolds, M. P., Kheir, A. M. S., Thorburn, P. J., Waha, K., Ruane, A. C., Aggarwal, P. K., Ahmed, M., Balkovic, J., Basso, B., Biernath, C. & 47 others, , 2019, In: Global Change Biology. 25, 1, p. 155-173Research output: Contribution to journal › Journal article › Research › peer-review
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Climate Change and Agriculture: The heart of a perfect storm
Porter, John Roy, 2010, Abstracts of Papers. International Institute for Bet Research, p. 2-3Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research › peer-review
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Choosing crops as energy feedstocks
Porter, John Roy, Kirsch, M. M. N., Streibig, Jens Carl & Felby, C., 2007, In: Nature Biotechnology. 25, 7, p. 716-717 1 p.Research output: Contribution to journal › Letter › Research › peer-review
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Choice of the Ångström-Prescott coefficients: are time-dependent ones better than fixed ones in modelling globat solar irradiance?
Liu, X., Mei, X., Li, Y., Porter, John Roy, Wang, Q. & Zhang, Y., 2010, In: Energy Conversion and Management. 51, 12, p. 2565-2574 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Chemical stress can increase crop yield
Cedergreen, Nina, Felby, C., Porter, John Roy & Streibig, Jens Carl, 2009, In: Field Crops Research. 114, 1, p. 54-57 4 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Challenges in designing ecological agriculture education: a Nordic perspective on change
Francis, C. A., Lieblein, G., Helenius, J., Salomonsson, L., Olsen, H. & Porter, John Roy, 2001, In: Renewable Agriculture and Food Systems (Print Edition). 16, 2, p. 89-95 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Can crop-climate models be accurate and precise? A case study for wheat production in Denmark
Montesino San Martin, M., Olesen, J. E. & Porter, John Roy, 2015, In: Agricultural and Forest Meteorology. 202, p. 51-60 10 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Calibration of the Ångström-Prescott coefficients (a, b) under different time scales and their impacts in estimating global solar radiation in the Yellow River basin
Liu, X., Mei, X., Li, Y., Zhng, Y., Wang, Q., Jensen, J. R. & Porter, John Roy, 2009, In: Agricultural and Forest Meteorology. 149, 3-4, p. 697-710 14 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Biomass for biofuels - the challenge and a possible way forward
Felby, C., Porter, John Roy, Rasmussen, S., Schjoerring, Jan K., Nielsen, T. H., Sakuragi, Y. & Willats, W. G. T., 2009. 1 p.Research output: Contribution to conference › Conference abstract for conference › Research
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Biofuels: putting current practices in perspective
Porter, John Roy, Chirinda, N., Felby, C. & Olesen, J. E., 2008, In: Science. 320, 5882, p. 1420-1420 1 p.Research output: Contribution to journal › Comment/debate › Research
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Bioethanol i tanken udelukker ikke mad i maven
Felby, C., Streibig, Jens Carl & Porter, John Roy, 2007, In: Dagbladet Information. 2 p.Research output: Contribution to journal › Contribution to newspaper - Newspaper article › Communication
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Assessing models for parameters of the Ångström-Prescott formula in China
Liu, X., Xu, Y., Zhong, X., Zhang, W., Porter, John Roy & Liu, W., 2012, In: Applied Energy. 96, p. 327-338 12 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Anthesis date and agricultural risk and the effects of high temperature extremes on wheat
Porter, John Roy & Wollenweber, B., 1997. 15 p.Research output: Contribution to conference › Paper › Research
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Annual report 1995 on the ESPACE-Wheat research at Long Ashton Research Station (UK) and Taastrup (DK)
Ewert, F. & Porter, John Roy, 1996, ESPACE-Wheat : European Stress Physiology and Climate Experiment : project 1: Wheat : progress report. Hertstein, U. & Jäger, H-J. (eds.). p. 41-50 10 p.Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Research
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Annex I: summary of presentations
Porter, John Roy & Wollenweber, B., 1997. 4 p.Research output: Contribution to conference › Paper › Research
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Analyse af IPCC delrapport 2 - Effekter, klimatilpasning og sårbarhed: med særligt fokus på Danmark
Christensen, J. H., Arnbjerg-Nielsen, K., Grinsted, Aslak, Halsnæs, K., Jeppesen, E., Madsen, H., Olesen, J. E., Porter, John Roy, Refsgaard, J. C. & Olesen, M., 2014, København: Miljøministeriet, Naturstyrelsen. 54 p.Research output: Book/Report › Report › Research
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An ¤analysis of leaf emergence of spring wheat cv. Minaret grown in different environments
Ewert, F., Porter, John Roy, Mulholland, B. J. & Vanhoutvin, S., 1996. 2 p.Research output: Contribution to conference › Paper › Research
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Agronomy as the science of sustainable food production
Porter, John Roy, 2011, Climate change: challenges and opportunities in agriculture. AGRISAFE, p. 12-15 4 p.Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research
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Agronomy as the science of primary food production
Porter, John Roy, 2010, Proceedings of Agro2010 the XIth ESA Congress: 2010, Montpellier, France. p. 41-42 2 p.Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review
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Agroecology, scaling and interdisciplinarity
Porter, John Roy, Dalgaard, T. & Hutchings, N. J., 2003, In: Agriculture Acosystems & Environment. 100, 1, p. 39-51 13 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Agroecology education and research: an academic platform for organic farming
Francis, C., Breland, T. A., Lieblein, G., Moulton, M., Salomonsen, L., Geber, U., Langer, Vibeke, Sriskandarajah, N., Porter, John Roy & Helenius, J., 2006, Ikke angivet. Andreasen, C. B., Elsgaard, L., Søndergaard Sørensen, L. & Hansen, G. (eds.). Forskningscenter for Økologisk Jordbrug og Fødevaresystemer, 2 p.Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research
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Agroecology: a flagship NOVA program
Lieblein, G., Bretland, T. A., Francis, C. A., Sriskandarajah, N., Langer, Vibeke, Porter, John Roy, Salomonsen, L., Gerber, U. & Helenius, J., 2005, 10 NOVA University Network Years. The Nordic Forestry, Veterinary and Agricultural University Network, p. 52-53 2 p.Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication
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Agriculture and technology
Porter, John Roy & Rasmussen, Jesper, 2009, A companion to the philosophy of technology. Olsen, J. K. B., Pedersen, S. A. & Hendricks, V. F. (eds.). Wiley-Blackwell, p. 285-288 4 p.Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Agricultural production and greenhouse gas emissions from world regions - the major trends over 40 years
Bennetzen, E. H., Smith, P. & Porter, John Roy, 2016, In: Global Environmental Change. 37, p. 43-55 13 p.Research output: Contribution to journal › Journal article › Research › peer-review
Aggregation of Phytophthora drechsleri zoospores; pattern analysis suggests a taxis
Porter, John Roy & Shaw, D. S., 1978, In: Transactions of the British mycological Society. 71, p. 515 518 4 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Afgrødernes respons på klimaændringer
Porter, John Roy, 2007. 2 p.Research output: Contribution to conference › Paper › Research
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Adaptation response surfaces for managing wheat under perturbed climate and CO2 in a Mediterranean environment
Ruiz-Ramos, M., Ferrise, R., Rodríguez, A., Lorite, I. J., Bindi, M., Carter, T. R., Fronzek, S., Palosuo, T., Pirttioja, N., Baranowski, P., Buis, S., Cammarano, D., Chen, Y., Dumont, B., Ewert, F., Gaiser, T., Hlavinka, P., Hoffmann, H., Höhn, J. G., Jurecka, F. & 17 others, , 2018, In: Agricultural Systems. 159, p. 260-274 15 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Activities of the INES Standing Committee on Ethical Questions
Porter, John Roy, 1996, Scientists for Global Responsibility : National Coordinating Committee report 1993-1995. p. 9-10 2 p.Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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A ¤strategy for process modelling of short-rotation Salix coppice plantations
Isebrands, J. G., Host, G. E., Bollmark, L., Porter, John Roy, Philippot, S., Stevens, E. & Rushton, K., 1996, In: Biomass & Bioenergy. (2/3), p. 245-252 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
ID: 3148511
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Food security and food production systems
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Emergy signature as a basis for sustainability valuation of agro-ecosystems
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Risks associated with Tilletia indica, the newly-listed EU quarantine pathogen, the cause of Karnal bunt of wheat: EC 5. framework project QLK5-1999-01554
Research output: Book/Report › Report › Research
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