Downy mildew

Caused by: Peronospora parasitica
Problem Category: Fungal Disease
Symptoms: Irregular yellow patches on leaves which turn light brown in color; fluffy gray growth on the undersides of the leaves
Comments: Disease emergence favored by cool, moist conditions
Management: Remove all crop debris after harvest; rotate with non-brassicas; application of appropriate fungicides may be required if symptoms of disease are present
Control: spray 2 times Cowdung+Asafoetida solution in 10 days interval.