Diagnosis and recommendations for management of trees and shrubs in green squares in Warsaw based on research on fungal diseases

Abstract Key message Comprehensive management of urban greenery is a key approach to control fungal diseases trees and shrubs avoid the deterioration in their health status. Preliminary investigations on status related growing four green squares Warsaw were conducted 2017–2019. The examined plants affected by that are commonly identified greenery, e.g., powdery mildew (causal agents: Sawadaea tulasnei , S. bicornis Podosphaera leucotricha sp., Erysiphe alphitoides E. magnifica berberidis flexuosa adunca ), rusts ( Gymnosporangium sabinae Melampsora laricis-populina apple scab Venturia inaequalis tar spot maple Rhytisma acerinum oyster mushroom Pleurotus ostreatus ). causal agents based morphological (macro- microscopic) features. Preventing managing plant reduction effects tasks conscious greenery. To address this issue, study presents basic guidelines application various recommended actions good practices, which constitute comprehensive sustainable strategy for integrated protection against these diseases. implementation complex crucial measure aimed at maintenance high plants.