Montag, Jurith; Schreiber, Lukas and Schönherr, Jörg (2006) Die postinfektionellen Wirkungen von Kupferhydroxid und Kupfersulfat auf Konidien von Venturia inaequalis. [The post-infection activities of copper hydroxide and copper sulfate against conidia of 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, Fördergemeinschaft Ökologischer Obstbau e.V. (FÖKO), Weinsberg, Germany, pp. 218-224.
The post-infection activity of copper hydroxide and copper sulfate against conidia of Venturia inaequalis were 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. Copper hydroxide and copper sulfate showed post-infection activity and killed primary stromata, provided the surface of the CM was kept wet. Copper hydroxide was more effective than copper sulfate and was able to kill all primary stromata 24 h after inoculation at concentrations of 116 and 231 mg l-1. Results indicate different modes of action for the highly water soluble copper sulfate and the slightly soluble copper hydroxide. Application of copper hydroxide to dry CM did not kill primary stromata. Hence, for copper hydroxide to exert post-infection activity leaves must be wet.
|EPrint Type:||Conference paper, poster, etc.|
|Type of presentation:||Poster|
|Keywords:||Venturia inaequalis, Kupferhydroxid, Kupfersulfat, Konidien, postinfektionelle Wirkung|
|Subjects:|| Crop husbandry > Crop health, quality, protection|
Crop husbandry > Production systems > Fruit and berries
|Research affiliation:|| Germany > Fördergemeinschaft Ökologischer Obstbau - FÖKO|
International Conferences > 2006: Ecofruit
|Related Links:||http://www.ecofruit.net, http://www.foeko.de/ecofruit.htm|
|Deposited By:||Boos, Markus|
|Deposited On:||28 Aug 2006|
|Last Modified:||26 Aug 2010 12:02|
|Refereed:||Peer-reviewed and accepted|
|Additional Publishing Information:||The proceedings are available as paperback at Fördergemeinschaft Ökologischer Obstbau e.V. (FÖKO), Traubenplatz 5, D-74189 Weinsberg, www.foeko.de|
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