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The post-infection activity of hydrated lime against conidia of Venturia inaequalis

Montag, Jurith; Schreiber, Lukas and Schönherr, Jörg (2006) The post-infection activity of hydrated lime against conidia of Venturia inaequalis. [Die postinfektionelle Wirkung von Calciumhydroxid auf Konidien von Venturia inaequalis.] 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. 77-82.

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Summary

The post-infection activity of hydrated lime against conidia of Venturia inaequalis was evaluated using an in
vitro test system based on isolated apple leaf cuticles. Experiments were conducted at 20°C and treatments
were applied 24 or 48 h after inoculation. Experiments were assessed by counting living primary stromata 72
h after inoculation using fluorescence microscopy and fluorescein diacetate (FDA) as a vital stain. At the
conditions of the in vitro test system hydrated lime had a post-infection activity. Suspension of 5 g l-1 applied
24 h after inoculation (16 h after infection) killed all primary stromata and stopped their further development.
Treatments 48 h after inoculation reduced the number of vital primary stromata to 60% of control.
Treatments with saturated solutions of hydrated lime (pH 12.45) and with KOH solutions of different pH
showed that a pH higher than 12.4 was needed to be 100% effective. Suspensions of calcium carbonate
(6.75 g l-1) had no effect.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Venturia inaequalis , Calciumhydroxid, Konidien, postinfektionelle Wirkung
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:13797
Deposited On:18 Sep 2008
Last Modified:12 Apr 2010 07:37
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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