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Prüfung bislang wenig berücksichtigter agronomischer Merkmale bei ökologisch erzeugten Kartoffeln

Haase, Thorsten; Schulz, Hannes; Kölsch, Eberhard and Heß, Jürgen (2011) Prüfung bislang wenig berücksichtigter agronomischer Merkmale bei ökologisch erzeugten Kartoffeln. [Examining selected agronomic characteristics of potato cultivars and their relevance for organic farming conditions.] Poster at: 11. Wissenschaftstagung Ökologischer Landbau, Gießen, 16.-18. März 2011.

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PDF - Accepted Version - German/Deutsch


Organic potato cultivation in Western Europe is predominantly nitrogen-limited and defoliation of the crop canopy caused by late blight may further reduce tuber yield. The aim was to find cultivars that are both, able (a) to use the available N as efficiently as possible and (b) be relatively tolerant to late blight. Another objective of the study was to examine a range of methods available to (c) assess crop N status and (d) describe characteristics of canopy architecture. Results from the first year (2009) indicate that even at the same N supply cultivars from a range of maturity groups can be differentiated in terms of their genotype-specific chlorophyll and leaf N concentration. Data also show that the risk of nitrate losses after harvest due to leaching may be aggravated by the fact that some cultivars take up marked amounts of N, but translocate relatively little into the tuber. Overall, first year results on crop N status and tuber growth duration indicate that an earlier harvest of tubers than common practice, may be suggested, to allow subsequent crops to catch the residual mineral N.

EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:FUDBK, N-Status, Bodenbedeckung, Blattflächenindex, Harvest-Index
Subjects: Crop husbandry
Research affiliation: International Conferences > 2011: Scientific Conference on Organic Agriculture
Germany > University of Kassel > Department of Organic Farming and Cropping
Related Links:http://www.wissenschaftstagung.de/, http://www.verlag-koester.de/buch.php?id=735&suche=11.%20wissenschaftstagung&fb_id=s
Deposited By: Haase, Prof. Dr. Thorsten
ID Code:17648
Deposited On:21 Jun 2011 11:50
Last Modified:26 Oct 2022 10:54
Document Language:German/Deutsch
Refereed:Peer-reviewed and accepted
Additional Publishing Information:Dieser Beitrag ist im Tagungsbandes der 11. Wissenschaftstagung erschienen.
Leithold, G.; Becker, K.; Brock, C.; Fischinger, S.; Spiegel, A.-K.; Spory, K.; Wilbois, K.-P. und Williges, U. (Hrsg.) (2011):
Es geht ums Ganze: Forschen im Dialog von Wissenschaft und Praxis
Beiträge zur 11. Wissenschaftstagung Ökologischer Landbau, Justus-Liebig-Universität Gießen, 15.-18. März 2011
Band 1: Boden, Pflanze, Umwelt, Lebensmittel und Produktqualität
Band 2: Tierproduktion, Sozioökonomie
Verlag Dr. Köster, Berlin.
Der Tagungsband kann über den Verlag Dr. Köster bezogen werden; siehe: http://verlag-koester.de/buch.php?id=735&fb_id=37

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