Top diseases in roses - Powdery Mildew
February 17, 2023
against fungal diseases such as Powdery mildew Powdery mildew is a fungal disease that is caused by many different genera of fungi such as Erysiphe, Podosphaera [...] Podosphaera, Oïdium, Leveillula . The main culprit in roses is Sphaerotheca pannosa . This fungus penetrates the plant cells and absorbs nutrients, leading [...] to water, so free moisture often limits epidemics. Spore dispersal by water is negligible since spores explode when in contact with water for no more than