| Affiliation: | 1. Institute of Plant Nutrition and Soil Science, Kiel University, , D‐24118 Kiel, Germany;2. Institute of Agricultural Climate Research, Johann Heinrich von Thünen Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries, , D‐38116 Braunschweig, Germany;3. Laboratory for Air Pollution & Environmental Technology, EMPA, , CH‐8600 Dübendorf, Switzerland;4. Terrestrial Biogeochemistry Group, Institute of Bio‐ and Geosciences, Agrosphere (IBG‐3), Forschungszentrum Jülich GmbH, , D‐52425 Jülich, Germany;5. Department of Crop Science, Section of Plant Nutrition and Crop Physiology, University of Goettingen, , D‐37075 G?ttingen, Germany;6. Rothamsted Research, North Wyke, , Okehampton, EX20 2SB UK |
