Spread and Manifestations of Pear Rust (Gymnosporangium sabine) on Different Pear Cultivars

The paper presents an investigation aimed at identifying the zones with regular incidence of pear rust. Such zones are appropriate for testing of cultivar susceptibility to the pathogen and fungicidal efficacy. The investigation data indicate that the disease is common on the monitored pear trees grown in the skirts of the north slopes of mountain Vitosha. Further away from the mountain, in Sofia Valley, the rate of pear rust attack is lower or the infection is missing.