Bekämpfung der Gnomonia-Blattbräune an Süßkirschen

The infestation of sweet cherry trees with Gnomonia erythrostoma has undergone an alarming increase. It leads to minor plant performance and fruit quality and may cause major problems for the fruit farmer up to existential problems. In order to thwart this development the Bavarian State Ministry of Agriculture and Forest Management has funded a three year pilot study to develop an effective control for this disease. Besides laboratory experiments investigating mechanisms of infection, field tests with new fungicides were performed. Our studies show that these fungicides are highly effective to eliminate infections with Gnomonia erythrostoma. In addition these substances have positive side effects such as controlling other diseases like the brown rot caused by Monilia.