The picture below is the approach of #8 where we sprayed the poa that has been growing and attempting to smother the zoysia that is dormant. This area was sprayed in late January after the thaw and just before the cold and snow hit the course. The warmer weather has allowed the RoundUp to do its work to the plants.
We will be monitoring these areas to insure that the zoysia grass is still alive under the poa. If it is not alive, we will strip out the area and put new zoysia in its place. I expect most of the zoysia to be in good enough shape to survive and thrive.