{"id":"W4412325673","doi":"","title":"Accurate assessment of grass nitrogen status based on multispectral data from two optical sensors and the critical nitrogen dilution curve","year":2022,"lang":"en","type":"article","venue":"","topic":"Water Quality Monitoring and Analysis","field":"Environmental Science","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"European Social Fund; Agencia Estatal de Investigación; European Regional Development Fund; Fundação para a Ciência e a Tecnologia; Leibniz-Gemeinschaft; Natural Environment Research Council; Biotechnology and Biological Sciences Research Council; Agriculture and Agri-Food Canada; Centre for Water Technology, Aarhus University; Directorate for Biological Sciences; Thünen-Institut; Cotton Research and Development Corporation; Tempus Közalapítvány; Landwirtschaftliche Rentenbank; Umweltbundesamt; Research Institute for Humanity and Nature; Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas; Alexander von Humboldt-Stiftung; Ministerio de Asuntos Económicos y Transformación Digital, Gobierno de España; Ministerio para la Transición Ecológica y el Reto Demográfico; Deutsche Forschungsgemeinschaft; Ministerial Standing Committee on Scientific and Technological Cooperation of the Organization of Islamic Cooperation; Bundesministerium für Ernährung und Landwirtschaft; Ministarstvo znanosti i obrazovanja; UK Research and Innovation; Universidad Politécnica de Madrid; Coordination of European Transnational Research in Organic Food and Farming Systems; Ministerio de Economía y Competitividad; China Scholarship Council; Eusko Jaurlaritza; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior; Ministeriet for Fø devarer, Landbrug og Fiskeri; Global Environment Facility; Indian Council of Agricultural Research; Ministerio de Ciencia e Innovación; European Commission; National Natural Science Foundation of China; National Science Foundation; Department of Biotechnology, Ministry of Science and Technology, India; Emberi Eroforrások Minisztériuma; Department for Environment, Food and Rural Affairs, UK Government; Université Mohammed VI Polytechnique; Grønt Udviklings- og Demonstrations Program; Bundesamt für Landwirtschaft; Ministerio de Ciencia, Innovación y Universidades; Joint Research Centre; Center for Fertilization and Plant Nutrition; Fonds Wetenschappelijk Onderzoek; Comunidad de Madrid; Centre for Ecology and Hydrology; Xunta de Galicia; Interreg; Internationalt Center for Forskning i Økologisk Jordbrug og Fødevaresystemer; Australian Government; Banco Santander; University of Melbourne; Deutsche Bundesstiftung Umwelt; Vlaamse regering; Comunidad Autónoma de la Región de Murcia; Miljø- og Fødevareministeriet; Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria; Universidad de la República Uruguay; Ministry of Environment; Centro para el Desarrollo Tecnológico Industrial","keywords":"Multispectral image; Nitrogen; Dilution; Environmental science; Remote sensing; Chemistry; 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