New results from testing of different Sour cherry cultivars under organic cultivation

摘要

At the LVWO Weinsberg 30 different sour cherry cultivars were tested under organic cultivation methods. At Dresden-Pillnitz 11 similar cultivars have been evaluated since 2007, as part of a trial with more sites overall in Germany. Data about the phenology (bud breaking, duration and intensity of blossom), yield and loss of fruits were collected. Susceptibilities for infections by Monilia sp. and Blumeriella jaapii were assessed. Great differences between the cultivars under organic conditions were found from 2007 to 2011 depending on the weather in each year. 2009 rain during blossom caused in Weinsberg heavy damages by Monilia sp., depending from the cultivar. 2010 still effects of this Monilia-infection influenced the yield, 2011 a very late frost at the beginning of May reduced the yield of the most cultivars. So in Weinsberg the summarized yield over all years was heavily influenced by the year 2011, best for ‘Rubellit', ‘Hartei’, ‘Safir’, ‘Jade’, ’Ujfehertoi Furtos' and ‘Achat’. Notfor all cultivars the estimation was the same in Dresden-Pillnitz and in Weinsberg, depending on the different weather conditions. This research work is part of the project "Evaluation and Optimizing of biological control methods of plum moth fCydia funebrana) and Monilia-disease in organic stone fruit production“, granted by the Bundesprogramm Okologischer Landbau und Nachhaltigkeit (FuE 060E198).