Good to know, thanks for sharing.
I am in year 3 with my backyard hops and in the 2nd year they got attacked by Powery Mildew.
So I am picking infected leaves off weekly and disposing of them and spraying the plants with a solution.
1 tablespoon Neem Oil
1 tablespoon Baking Soda
1 gallon water
see "Hop growing thread 2018"