Epidemic of Erysiphe platani in urban areas on the example of the Szczecin (NW Poland)

Investigations a development of infection caused by Erysiphe platani on plane trees ( Platanus x hispanica ) were conducted in the large city in north-western Poland in the years 2014-2017. Leaf infection as well as the frequency and phenology of the fungus were assessed. The occurrence and biology of E. platani at individual research localities varied depending on the infection time and habitat conditions. A correlation between the presence of Discula platani and the timeline of the occurrence of disease symptoms induced by E. platani was identified.