Authors
Nina Stoppe
Institute of Plant Nutrition and Soil Science, Christian-Albrechts-University Kiel, Hermann-Rodewaldstr. 2, D-24118, Kiel, Germany
Rainer Horn
Institute of Plant Nutrition and Soil Science, Christian-Albrechts-University Kiel, Hermann-Rodewaldstr. 2, D-24118, Kiel, Germany