1. Department of Engineering and Agricultural Sciences, Environment Institute Natural Resources and Biodiversity; University of León; León Spain
2. Company Esteban Sanchez Maillo; Corbeta 10, Zamora Spain
3. Freelance, Vicente Aleixandre 24; Valladolid Spain
4. Plant Protection Department; Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Carretera de La Coruña; Madrid Spain
5. Natural Resources Institute; University of Greenwich; Chatham Maritime Kent UK