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Bioporen: Ihre Bedeutung für das Wachstum der landwirtschaftlichen Kulturpflanzen

Kautz, Timo; Athmann, Miriam and Köpke, Ulrich (2013) Bioporen: Ihre Bedeutung für das Wachstum der landwirtschaftlichen Kulturpflanzen. Paper at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

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Summary

The subsoil (i.e. the soil beneath the ploughed soil layer) provides a large potential reservoir of nutrients for crops but the conditions for nutrient acquisition are generally adverse due tolow organic matter contents, low nutrient concentration in the soil solution, low microbial activity and high bulk density. However, the structural heterogeneity of the subsoil including biopores created by roots and earthworms requires a more detailed view on nutrient acquisition processes. First results from the DFG research unit ‘Crop Sequence and the Nutrient Acquisition from the Subsoil’ have shown that cultivation of perennial fodder crops with taproot systems can result in enhanced biopore density in the subsoil and increased root-length density of subsequent crops. Observations with endoscopes revealed that 80-90 % of roots growing in biopores established contact with the pore wall thus potentially accessing the nutrients stored therein.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:subsoil, nutrient acquisition, biopores, root growth, perennial fodder crops
Subjects: Crop husbandry > Crop combinations and interactions
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: Kautz, Dr. Timo
ID Code:21629
Deposited On:09 Sep 2013 12:40
Last Modified:11 Nov 2013 17:15
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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