In cucumber, Mycosphaerella melonis (or Didymella bryoniae) affects stems, leaves and flowers and this infection leads to both visible (external) and non-visible (internal) fruit rot, resulting in significant yield loss. In this factsheet, the symptoms, biology and the epidemiology of this fungal pathogen are described. Guidelines on how to manage the disease by good hygiene, cultural measures and options for chemical and biological control are outlined.
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