3431: Stickstoffaufnahme und Biomasseertrag von Zwischenfrüchten und deren Auswirkungen auf Bodennitratgehalte und die Folgekultur unter den Bedingungen des Ökologischen Landbaus im pannonischen Klimagebiet [Nitrogen uptake and yield of catch crops and their impact on nitrate content in soil under the conditions of organic farming in the pannonic climate region]
(2005) Stickstoffaufnahme und Biomasseertrag von Zwischenfrüchten und deren Auswirkungen auf Bodennitratgehalte und die Folgekultur unter den Bedingungen des Ökologischen Landbaus im pannonischen Klimagebiet [Nitrogen uptake and yield of catch crops and their impact on nitrate content in soil under the conditions of organic farming in the pannonic climate region]. Paper presented at 8. Wissenschaftstagung Ökologischer Landbau - Ende der Nische, Kassel, 01.03.2005 - 04.03.2005; Published in Heß, J and Rahmann, G, Eds. Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau. kassel university press GmbH, Kassel.
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Summary
Data on the potential of catch crops to reduce soil nitrate contents, on their N accumulation and biological nitrogen fixation (BNF) are lacking for organic farming in the dry, pannonic region of Eastern Austria. The effect of legume, non-legume, and legume + non-legume crops used as catch crops on inorganic soil nitrogen, crop biomass and crop N, and BNF were tested in comparison to bare fallow. Non-legumes and legumes + non-legumes were more efficient than legumes in reducing inorganic soil N contents in autumn and nitrate contents in soil solution from the subsoil in winter. This reduction in inorganic soil N did not last until March of the following year due to N mineralisation from the mulch. The legume + non-legume mixture contained a larger amount of crop N than both legumes and non-legumes. This was due to the combined effect of soil-N uptake by the non-legumes and BNF by the legumes in the mixture.
| Document Language: | Deutsch - German |
|---|---|
| Keywords: | Bodenfruchtbarkeit, Pflanzenbau, Wasserhaushalt |
| Subject Areas: | Crop husbandry > Crop combinations and interactions |
| Research affiliation: | International Conferences > Scientific Conferences for Germany, Austria and Switzerland > Scientific conference 2005 Austria > Univ. BOKU Wien > Sustainable Agr. Systems - IfÖL |
| Orgprints ID Number: | 3431 |
| Contact: | Rinnofner, Mag. Thomas |
| Deposited On: | 05 March 2005 |
| EPrint Type: | Conference paper |
| Published?: | Published |
| Peer Review Status: | Peer-reviewed and accepted |
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