1. Centre for development and environment (CDE) University of Bern Bern Switzerland
2. Instituto das Ciências Agrárias e Ambientais Mediterrânicas (ICAAM) University of Évora Núcleo da Mitra Apartado 94 Évora 7006–554 Portugal
3. Institute of Mediterranean Agricultural and Environmental Sciences (ICAAM) University of Évora, Dept de Fitotecnia Évora P‐7002‐554 Portugal
4. Research Centre for Natural Resources, Environment and Society (CERNAS) Polytechnic Institute of Coimbra, Higher Agriculture School Coimbra Portugal
5. Dpto. Agroquímica y Medio Ambiente, Edificio Alcudia. Universidad Miguel Hernández Avda. Universidad s/n 03202‐ Elche Alicante Spain
6. Agricultural University Athens (AUA) Greece
7. Biotechnical Faculty University of Ljubljana Jamnikarjeva 101 Ljubljana 1000 Slovenia
8. Institute for Soil Sciences and Agricultural Chemistry, Centre for Agricultural Research Hungarian Academy of Sciences Herman Ottó út. 15. Budapest H‐1022 Hungary
9. University of Pannonia (UP), Georgikon Faculty Deák F. u. 16. Keszthely H‐8360 Hungary
10. National Research and Development Institute for Soil Science Agrochemistry and Environment – ICPA Bucharest Romania
11. Institute of Agrophysics Polish Academy of Sciences Doświadczalna 4 Lublin 20–290 Poland
12. Estonian University of Life Sciences, Institute of Agricultural and Environmental Sciences Kreutzwaldi Str. 1 Tartu 51014 Estonia
13. National Engineering Laboratory for Improving Quality of Arable Land Institute of Agricultural Resources
14. Soil and Fertilizer Institute of the Sichuan Academy of Agricultural Sciences (SFI)
15. Wageningen Plant Research Sustainable Farming and Food Systems Wageningen the Netherlands
16. Gaec de la Branchette Bretagne France
17. Departement of Environmental Sciences, Soil Physics and Land Management Wageningen University & Research Wageningen the Netherlands