Fall rough bermuda application

At the end of October, I made an application on 10 acres of rough with  high % of bermuda in it.  My plan was to hit it with a spray that would injure the bermuda going into winter and would delay its emergence next spring.  The rate was about 75% of recommended rate.  After a few weeks went by I noticed some discoloration in the rough which I expected.  Normally we would have growth until the end of November but the 14 degrees arrived and a week of cold shut down the turf.  In most cases, the cool season turf would have grown out of the injury.

With the injury still evident at the first week of December,  I contacted our Sygenta area rep who actually is based in Stl.  He came by and looked at the areas I sprayed. In most areas, he believes the turf will grow back.  There are some areas which look a little more affected. One of the things I found out was that there is a fescue variety that is used in our rough seed and sod we purchase that is not as tolerant to the herbicide I applied.

I believe also some poa, bluegrass and bentgrass in the rough were injured as well.  Holes 1-11 and a little on 12 were sprayed.  Some areas in shade were not sprayed because the Bermuda is not strong in the shaded locations.

This is a view looking toward 4. You can see the turf that was not effected in the middle between the 2 passes.