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New Results from scab-experiments (treatments on fallen leaves and summer-applications)

Pfeiffer, Barbara (2006) New Results from scab-experiments (treatments on fallen leaves and summer-applications). [Neue Ergebnisse aus den Schorfversuchen (Behandlungen des Falllaubs und Sommerspritzungen).] In: Boos, Markus (Ed.) Ecofruit - 12th International Conference on Cultivation Technique and Phytopathological Problems in Organic Fruit-Growing: Proceedings to the Conference from 31st January to 2nd February 2006 at Weinsberg/Germany, pp. 101-107.

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Summary

In the leaf-decompositon-trials to reduce the ascospore potential of Venturia inaequalis (2003/2004 and
2004/2005) different agents were tested with regard to direct effects on scab and to increasing the attractivity
of the leaves for earthworms. TSB (lab medium with soya extracts) had a heavy direct effect on ascospore
potential, but in this formulation it cannot be used in organic fruit-growing. Humofix and Bactofil B didn´t reduce
the potential as strongly as in the trial 2002/2003. A yeast extract and a combination of bean extract
with powdered milk increased the attractivity for earthworms. In the trial 2004/2005 the reduction of the ascospore
potential was at best to 60 % of the control (powdered milk+Humofix), respecting the loss by earthworms
yeast extract+malt showed positive effects. In the experiment about applications against scab in
summer 2004 the fluid formulation Sommerschwefel was comparable with wetting sulphur, during the storage
season Frutogard and Agromil+BioPluss retarded best the development of late scab lesions on the apples.
Why Agromil+BioPluss caused an increasing of superficial scald in April 2005, cannot be explained at
the moment.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:apple, organic fruit-growing, apple scab, fallen leaves, storage diseases
Subjects: Crop husbandry > Crop health, quality, protection
Crop husbandry > Production systems > Fruit and berries
Research affiliation: International Conferences > 2006: Ecofruit
Related Links:http://www.ecofruit.net
Deposited By: Tagung, Ecofruit
ID Code:13802
Deposited On:04 Aug 2009
Last Modified:12 Apr 2010 07:37
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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