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Sooty blotch of apple: Efficacy of different application strategies

Mayr, U. and Späth, S. (2008) Sooty blotch of apple: Efficacy of different application strategies. In: Boos, Markus (Ed.) Ecofruit - 13th International Conference on Cultivation Technique and Phytopathological Problems in Organic Fruit-Growing: Proceedings to the Conference from 18thFebruary to 20th February 2008 at Weinsberg/Germany, pp. 82-86.

[thumbnail of 082-086.pdf] PDF - German/Deutsch


Sooty blotch causes heavy losses in Lake Constance organic apple production. In the last
five years research has been done at the research station for fruit growing
(Kompetenzzentrum Obstbau – Bodensee) on strategies to control Sooty blotch on organic
grown pome fruit. Different control strategies with lime sulphur, coconut soap and
potassium bicarbonate with different application rates, application times were tested in
several trials on the cultivar ‘Topaz’. Over the years the results show that lime sulphur has
significant effects in controlling Sooty blotch. In a first trial potassium bicarbonate showed
a promising efficacy against Sooty blotch. Concerning the right application times we need
further investigations. The problem is that Sooty blotch is a disease complex caused by
several fungi and it is likely that the fungi that are a part of the complex differ from area to

EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Sooty blotch, application strategies, lime sulphur, coconut soap
Subjects: Crop husbandry > Crop health, quality, protection
Crop husbandry > Production systems > Fruit and berries
Research affiliation: International Conferences > 2008: Ecofruit
Related Links:http://www.ecofruit.net
Deposited By: Tagung, Ecofruit
ID Code:13649
Deposited On:05 Aug 2008
Last Modified:12 Apr 2010 07:37
Document Language:English
Refereed:Peer-reviewed and accepted

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