I was doing some research on the blog site the other day and ran across the April 2014 video showing some damage or weak areas in 1 Fairway where Bermuda was sprayed the fall before.
I did the same thing last fall on this same Fairway but you see hardly any Bermuda damaged from last falls spray because the Zoysia has improved significantly in these areas. That does not mean the Bermuda is completely gone, it probably isn't but it does mean that the Zoysia is more active and out competing the Bermuda in this area. The first video is the current view and the second video is from 2014. I thought you would enjoy seeing the progress, I sure do!
Longer Videos from original post.
MARCH 2016 VIDEO
APRIL 2014 VIDEO