International Union of Soil Science (IUSS), Division 3 - Soil Use and Management, University Duisburg-Essen, Germany and Humboldt Universität Berlin, Germany
together with

  • WG Soil Fertility and Plant Nutrition of the German Soil Science Society
  • Society for Plant Nutrition of Germany
  • Society for Agronomy of Germany
  • International WG Organic Nitrogen Long Term Trials (IOSDV)