Har, i thought i saw a video (not yours) that suggested it but, i've almost killed bananas doing what i read in reviews (not here) as well. If you don't spray blooms with sulfur, i surely won't.
Powdery mildew hits this tree hard every year. I'll do whatever you suggest. Tree's looking very good preparing for bloom now that i'm staying on it with copper, 3 not 4 tsp. Hoping i won't get tree in trouble using weaker more often. I don't mind, easy enough.