Regional Agricultural Research Station, ANGRAU, Nandyal – 518 502, Kurnool Dt., A.P.
A total of 32 coordinated entries of sunflower screened in Kharif and rabi seasons of 2018-19 for important diseases of sunflower like necrosis, leaf curl, Alternaria leaf spot and powdery mildew under field conditions. Susceptible check KBSH-44 was sown after every two rows of entries. It was found that, among the 20 entries screened, 13 entries were resistant to necrosis, CSFH-146008 was moderately resistant to Alternaria leaf spot and IIOSH-2 for powdery mildew diseases during kharif season. During rabi, three lines were found as resistant to leaf curl, one entry was moderately susceptible, five entries were susceptible and six entries were highly susceptible to Alternaria leaf spot. For powdery mildew disease, three entries were susceptible and nine entries were highly susceptible. Out of all the entries, for kharif, only one entry each showed moderately resistant reaction to Alternaria leaf spot and powdery mildew diseases. These resistant or moderately resistant entries may be used in severe disease prone areas to reduce losses to sunflower crop.
Alternaria, necrosis, leaf curl, powdery mildew, sunflower, screening