Screening of Mustard Varieties and Temperature Effect on White Rust and Alternaria Blight

Background: Mustard is one of the most important cruciferous crops which are grown basically for oil. The crop infected by many diseases prominently fungal cause limitation in productivity crop. White rust (Albugo candida) and Alternaria blight (Alternaria brassicae) serious mustard. Methods: study was conducted to find out resistant response mustard varieties against these diseases. A field experiment screen Rabi season 2021-22 at Research Farm Amar Singh (PG) College, Lakhaoti, Bulandshahr (UP), India. In India, yield losses from 23 54.5% due white 17-48% has been reported. Result: Among tested sixteen varieties, four like PT-305, PM-44, Kanchan MYSL-203 were shown rust. Whereas, twelve Jagannath, Radhika, Hybrid-805, Dev-142, Nandi bull, Araurali, 45L46 Lohiya, Kranti, Pusa Mahal, PusaVijya, PM-31 Rh-149 susceptible Infection observed all varieties. Postules on lower surface leaves starting appear after 5th January (Temperature min. 7°C max. 19°C). highest incidence 16th 08th February range 8-10°C 20-22°C). Incidence regularly increasing 28th January.