questions: asking about control measure of powdery mildew in brinjal 
 answers: told him to mix 3 tbsp. of neem oil to one gallon of water, and spray onto affected plants every 7-14 days. take precautions to avoid sunburning the leaves, and avoid spraying the plant's buds and flowers.
mix 4 tbsp. of vinegar (5% solution) with 1 gallon of water. reapply every three days.