Dry and warm climates, along with the absence of air movement, are favourable for the occurrence of this disease.
Damage Symptoms:
Symptoms begin as a white, powdery substance on the upper surface of the leaf, especially along the veins, which later spreads to the entire leaf surface.
Curling and chlorosis of leaves occur later.
Severe infections lead to premature leaf drop and stunted growth and may even result in the death of the plant.
Preventive Measures:
Practice crop rotation with non-cruciferous plants.
Avoid over-application of nitrogenous fertilizers.
