Powdery mildew

Caused by: Oidium asteris-punicei
Problem Category: Fungal Disease
Symptoms: Powdery white covering on leaves; patches may coalesce to cover entire plant; if plant is heavily infected leaves may roll upward and appear scorched
Comments: Fungus overwinters on plant debris or alternate host; disease emergence is favored by warm, dry weather with cool nights that result in dew formation
Management: Use overhead irrigation (washes fungus from leaves and reduces viability); plant crop as early as possible; applications of appropriate fungicides may be necessary to control the disease
Control: spray Fermented Butter milk 6 litres,100 gm Asafoetida in 100 litres water or cowurine + asafoetida solution.