european pear rust is a common fungal disease of pears

affects agriculture also branch branches bright cankerlike causing color common damaged detail disease diseased diseases dry environment european farm flora free fruit fungal fungi fungicide fungus fuscum gall garden green growth gymnosporangium infection infestation july junipers leaf leaves local natural nature orange organic outdoor pathogen pathology pear pears perennial pesticide plant rust sabinae season shape spots spray summer swellings tree trellis unhealthy yellow