Spore dispersal and early infections of Diplocarpon coronariae causing apple blotch

Summary in the original language of the document

Apple blotch is a major disease of apple in Asia and recently emerged in Europe and the USA. It is caused by the fungus Diplocarpon coronariae (formerly: Marssonina coronaria; teleomorph: Diplocarpon mali) and leads to severe defoliation of apple trees in late summer resulting in reduced yield and fruit quality. Data on spore dispersal, time point of first infections and disease dynamics in Europe is still lacking but crucial to improve control methods.