A purposive sampling survey was conducted in three districts viz., Thrissur, Malappuram and Wayanad during July-August, November-December March-April seasons for monitoring disease occurrence and sample collection. Three leaf blights (LB-1, LB-2 and LB-3), two leaf spots (LS-1 and LS-2) and powdery mildew (PM) were the foliage diseases observed during the survey. Petal blight was the only flower disease noticed apart from root rot and wilt disease. |