Perkons, Ute; Küpper, Paul Martin; Kautz, Timo and Köpke, Ulrich (2013) Pflanzenbauliche Nutzung von Bioporen im Unterboden. Paper at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.
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Summary
Biopores act as pathways for the roots of following crops to access water and nutrients stored in the subsoil. Their role for nutrient management is especially important under the conditions of Organic Agriculture. In a field trial on Haplic Luvisol, chicory (Cichorium intybus L., tap root system) and tall fescue (Festuca arundinacea, fibrous root system) were grown as precrops. Effects on biopore density, root-length density (RLD), leaf area index (LAI), biomass, transpiration and photosynthesis of following winter barley (Hordeum vulgare L.) were measured.
Biopore density and RLD declined with soil depth. In all depth levels biopore density was higher after chicory in comparison to fescue. Between 95 and 125 cm soil depth the difference was significant. From 135 – 200 cm soil depth RLD of winter barley after chicory was significantly higher compared with RLD after fescue (BBCH 92 – 93). LAI and by trend biomass of winter barley gave higher values after chicory, whereas rates of photosynthesis and transpiration did not show differences.
EPrint Type: | Conference paper, poster, etc. |
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Type of presentation: | Paper |
Keywords: | Fruchtfolge, Bioporen, Wurzellängendichte, Gaswechsel, Blattflächenindex |
Subjects: | Crop husbandry Soil |
Research affiliation: | Germany > University of Bonn > Institute of Organic Agriculture International Conferences > 2013: Scientific Conference Organic Agriculture > Plant & soil |
Related Links: | http://www.wissenschaftstagung.de/, https://www.verlag-koester.de/index.php?id=114&tx_fbmagento |
Deposited By: | Perkons, Ute |
ID Code: | 21634 |
Deposited On: | 09 Sep 2013 12:40 |
Last Modified: | 11 Nov 2013 17:37 |
Document Language: | German/Deutsch |
Status: | Published |
Refereed: | Peer-reviewed and accepted |
Additional Publishing Information: | Dieser Beitrag ist im Tagungsband der 12. Wissenschaftstagung erschienen. Dr. D. Neuhoff, C. Stumm, S. Ziegler u.a. (Hrsg.) Beiträge zur 12. Wissenschaftstagung Ökologischer Landbau Ideal und Wirklichkeit: Perspektiven ökologischer Landbewirtschaftung Erscheinungsjahr: 2013 ISBN-13: 9783895748158 Verlag Dr. Köster, Berlin |
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