Symptoms of Downy mildew disease: The disease causes purple spots on the lower surface of the leaves, while on the upper surface, yellow or brown spots and hairy fungal growth are found, as well as black to brown spots or streaks on the stems. Cauliflower curd turns black both inside and outside. In the severe form of this disease, the entire plant is destroyed.
Control Measures: To control the disease, spray Novaxyl @ (Metalaxyl 8%+ Mancozeb 64% WP) @ 60 gm, Silicomaxx Gold @ 5 ml, Novamaxx (Gibberellic Acid 0.001% L) @ 30 ml per 15 litres of water.
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