• Irregular, bright yellow blotches with yellow halo appear on leaves.
• Abundant white sporulation in the infected area of leaves

Symptoms on leaves

Causal agent –Leveillula taurica (Oidiopsis sicula) Oidiopsis type

• –Leveillula taurica (Oidiopsis sicula) Oidiopsis type

Pathogen characters : Hyaline and septate, endophytic

• Hyaline and septate, endophytic

Sexual spores : Ascospores in ascocarp (Chasmothecium)

• Ascospores in ascocarp (Chasmothecium)

Survival and Mode of Spread

Survival : Obligate parasite

• Obligate parasite

Primary spread: Infected debris

• Infected debris

Secondary spread: Wind

• Wind

Favourable conditions

• Warm and dry weatherC

Integrated Disease Management

• Field sanitation
• Spray Propiconazole 25% EC @200 ml/ac
• Seed treatment with Bacillus subtilis @ 10 g/kg seeds

Source of Information

• https:www.apsnet.org
• Crop production guide – Horticulture 2020.

Acknowledgement