Effects of nitrogen fertilization and irrigation on N2O emissions from a sandy soil in Germany |
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| Authors: | Benjamin Trost Annette Prochnow Michael Baumecker Andreas Meyer-Aurich Katrin Drastig Frank Ellmer |
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| Institution: | 1. Department of Technology Assessment and Substance Cycles, Leibniz-Institute for Agricultural Engineering Potsdam-Bornim, 14469 Potsdam, Germanybtrost@atb-potsdam.de;3. Department of Technology Assessment and Substance Cycles, Leibniz-Institute for Agricultural Engineering Potsdam-Bornim, 14469 Potsdam, Germany;4. Department for Strategies for using Bioresources, Faculty of Life Sciences, Chair Utilization Strategies for Bioresources, Humboldt-Universit?t zu Berlin, 10115 Berlin, Germany;5. Field Study and Research Station, Faculty of Life Sciences, Humboldt-Universit?t zu Berlin, 14974 Thyrow, Germany;6. Division of Agronomy and Crop Science, Faculty of Life Sciences, Humboldt-Universit?t zu Berlin, 14195 Berlin, Germany |
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| Abstract: | The aim of this study was to investigate the effect of supplemental irrigation on the amount of N2O emissions on a sandy soil in north-east Germany. N2O flux measurements were carried out over two vegetation periods from the emergence of plants to harvest. The level of N2O emissions was low, which is typical for sandy soils in north-east Germany. In both periods, irrigation had no increasing effect on N2O emissions. Relevant factors were the soil temperature and the soil water-filled pore space (WFPS), which were mainly influenced by weather conditions. This may indicate that nitrification was the main source of N2O emissions. In conclusion, this study has confirmed that sandy soils under weather conditions of north-east Germany generally have a very low potential for N2O emissions. |
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| Keywords: | N2O emissions irrigation sandy soil wheat nitrogen fertilization |
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