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Entwicklung des Befalles mit Weizensteinbrand (Tilletia caries) bei Saatgut in der Biosaatgutanerkennung in Österreich und Qualitätsvergleich zu Nachbausaatgut

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Weinhappel, Manfred and Riepl, Ernestine (2013) Entwicklung des Befalles mit Weizensteinbrand (Tilletia caries) bei Saatgut in der Biosaatgutanerkennung in Österreich und Qualitätsvergleich zu Nachbausaatgut. Paper at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

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Summary

Common Bunt (Tilletia caries) is a mainly seed borne disease and causes high losses in organic wheat and spelt production. Due to the basic role of seed health in disease prevention, seed quality aspects have to be focussed strictly in organic farming.
In the scope of these studies, Tilletia results of 1291 wheat seed lots and 298 spelt wheat lots obtained from officially organic seed production from 2000 to 2012 have been analysed. The data indicated significantly the increasing spread of Tilletia caries in seed production in the last years, nevertheless in 2012 a high rate of more than 90% of the tested lots still corresponds to the requirements for untreated seed according to the Austrian Seed Regulations (threshold level 10 spores/kernel). As the infection level of the used propagation seeds was stable high over the whole period (≤1 spore/kernel), mainly phytosanitary issues (e.g. soil contaminations) seems to be responsible for that development.
Additionally the contamination level of farm saved seed has been analysed. Farm saved seed is contaminated significantly and several times higher than organic certified seed and can be considered therefore as a main agent for uncontrolled and sustainable disease spread.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Weizensteinbrand, Saatgutanerkennung, Saatgutprüfung, Nachbausaatgut
Subjects: Crop husbandry > Breeding, genetics and propagation
Research affiliation: 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: Weinhappel, Manfred
ID Code:21589
Deposited On:09 Sep 2013 12:39
Last Modified:11 Nov 2013 17:57
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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