Is a white colored fungus.
It attacks many crop’s leaves.
It doesn’t need high humidity.
The fungus can cover all of the plant’s leaves
When the leaves are infected, they turn brown and shrivel.
It is recommended to use at least 4 kinds of different pesticides,
and alternate between them every 3 days,
in order to overcome pest’s resistance, and completely exterminate them.
For further information about this, read this post , and this post also.
Best pesticides for Powdery mildew,