Sulphur treatment for a mango tree

Question

My tree seems to have a mildew disease. I have some 80% sulphur but please can you tell me how much to use per litre?

Answer 1

According to my research, you can mix 4 tablespoons of wettable sulfur powder per gallon of water in a pump sprayer/spray bottle.

Source:
http://homeguides.sfgate.com/kill-powdery-mold-vegetable-plants-92349.html