1. Plant-Soil-Interactions, Agroscope, Zurich, Switzerland
2. Department of Plant and Microbial Biology, University of Zurich, Zurich, Switzerland
3. Environmental Analytics, Agroscope, Zurich, Switzerland
4. Natural Resources Institute, University of Greenwich, Chatham Maritime, United Kingdom
5. Research Institute of Organic Agriculture FiBL, Lausanne, Switzerland
6. Swiss Soil Monitoring Network (NABO), Agroscope, Zurich, Switzerland
7. Agroécologie, AgroSup Dijon, INRAE, Univ. Bourgogne, Dijon, France