VARIETAL REACTION AND CHEMICAL CONTROL OF CUCUMBER POWDERY MILDEW IN EGYPT

Document Type : Original Article

Authors

Plant Pathology Research institute, Agricultural Research Centre, Giza, Egypt

Abstract

The reaction of four cucumber cultivars aganist Erysiphe cicho­racearum DC., the causal pathogen of powdery mildew revealed that Beit Alpha cultivar was highly susceptible, while Amira was moderately sus­ceptible. On the other hand, Medina was moderatley resistant while Sweet crunsh showed high resistance. Fungicidal efficiency showed that karathane 48%, Anvil, Alto 100, Topas 100 and Afugan were the most effective fungicides against powdery mildew of cucumber while flowable sulphur, Benlate, Dorado and Sumi-eight were the least effective fungicides. Kema-Z and Bayfidan showed the lowest effect.