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Root growth response of spring wheat (Triticum aestivum L.) and mallow (Malva sylvestris L.) to biopore generating precrops

Perkons, Ute; Kautz, Timo and Köpke, Ulrich (2014) Root growth response of spring wheat (Triticum aestivum L.) and mallow (Malva sylvestris L.) to biopore generating precrops. In: Rahmann, G. and Aksoy, U. (Eds.) Building Organic Bridges, Johann Heinrich von Thünen-Institut, Braunschweig, Germany, 2, Thuenen Report, no. 20, pp. 477-480.

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Little is known about root growth in biopores. The aim of this study was to quantify differences of root-length density (RLD) in biopores between a tap root system (mallow) and a fibrous root system (wheat).
A field experiment was undertaken near Bonn, Germany on a Haplic Luvisol developed from loess. Lucerne (Medicago sativa L.) and chicory (Cichorium intybus L.) were grown as precrops in a field trial followed by spring wheat (Triticum aestivum L.) and mallow (Malva sylvestris L.). Biopore density was measured on horizontal areas of 50 x 50 cm. RLD was estimated using the profile wall method to 160 cm soil depth. Roots growing in biopores with a diameter > 2 mm were recorded separately from the roots in the bulk soil.
Biopore density was higher after chicory compared to lucerne cultivation. RLD of wheat in the topsoil was higher and in the subsoil lower than RLD of mallow. RLD in biopores of mallow was higher than of wheat. Both crops showed higher RLD in biopores after chicory.
The results indicate that the response of root growth to the presence of biopores is more pronounced for tap root systems than for fibrous root systems.

EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:subsoil, biopore, root-length density, profile wall method, root architecture
Subjects: Crop husbandry > Crop combinations and interactions
Crop husbandry > Production systems > Cereals, pulses and oilseeds
Research affiliation: Germany > University of Bonn > Institute of Organic Agriculture
International Conferences > 2014: 18th IFOAM OWC Scientific Track: 4th ISOFAR Scientific Conference
Deposited By: Perkons, Ute
ID Code:23996
Deposited On:30 Oct 2014 17:20
Last Modified:30 Oct 2014 17:20
Document Language:English
Refereed:Peer-reviewed and accepted
Additional Publishing Information:urn:nbn:de:gbv:253-201407-dn053621-1

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