A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Summary of an eight year research project on fire blight control
In organic fruit growing effective control strategies are needed to prevent blossom infections by the fire blight pathogen Erwinia amylovora. In a research project, funded by the “BundesprogrammÖkologischerLandbau” from 2004 to 2011, 64 different preparations have been tested in laboratory trials for efficiency against the fire blight pathogen. 26 of them were further tested in field trials according to EPPO guideline PP1/166(3).From the products, which are commercialised in Germany, BlossomProtect had the highest efficiency, followed by Myco-Sin, FolanxCa 29, Funguran and Serenade. Blossom Protect contains blastospores of the yeast-like fungus Aureobasidium pullulans. Therefore strategies were developed to integrate Blossom Protect applications in commercial spray schedules for apple scab control. In additionthe influence of the selected products on fruit russet was evaluated. The increase in fruit russetting depended on the number of applications of Blossom Protect and on the variety treated. Combined control of fire blight and apple scab control could be achieved using tank mixtures of Blossom Protect and wettablesulphur. With a strategy of alternating Blossom Protect applications with sprays of a mixture of wettablesulphur and Myco-Sin, fire blight and apple scab were both controlled significantly. In addition, this strategy reduced the risk of fruit russetting. In field trials, carried out since 2006, the abundance of E. amylovora was measured in blossoms with qPCR and was correlated with the disease incidence in untreated plots. These data indicate that control measures can be limited to orchards infested with the fire blight pathogen.
Summary of an eight year research project on fire blight control
In organic fruit growing effective control strategies are needed to prevent blossom infections by the fire blight pathogen Erwinia amylovora. In a research project, funded by the “BundesprogrammÖkologischerLandbau” from 2004 to 2011, 64 different preparations have been tested in laboratory trials for efficiency against the fire blight pathogen. 26 of them were further tested in field trials according to EPPO guideline PP1/166(3).From the products, which are commercialised in Germany, BlossomProtect had the highest efficiency, followed by Myco-Sin, FolanxCa 29, Funguran and Serenade. Blossom Protect contains blastospores of the yeast-like fungus Aureobasidium pullulans. Therefore strategies were developed to integrate Blossom Protect applications in commercial spray schedules for apple scab control. In additionthe influence of the selected products on fruit russet was evaluated. The increase in fruit russetting depended on the number of applications of Blossom Protect and on the variety treated. Combined control of fire blight and apple scab control could be achieved using tank mixtures of Blossom Protect and wettablesulphur. With a strategy of alternating Blossom Protect applications with sprays of a mixture of wettablesulphur and Myco-Sin, fire blight and apple scab were both controlled significantly. In addition, this strategy reduced the risk of fruit russetting. In field trials, carried out since 2006, the abundance of E. amylovora was measured in blossoms with qPCR and was correlated with the disease incidence in untreated plots. These data indicate that control measures can be limited to orchards infested with the fire blight pathogen.
Summary of an eight year research project on fire blight control
Kunz, S. (author) / Schmitt, Annegret (author) / Haug, P. (author)
2012-01-01
Article (Journal)
Electronic Resource
English
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