12/23/2012 9:12 AM
I have bentgrass greens with 419 surrounds and fairways in South Carolina. I have been spraying Ronstar Flo tank mixed with glyphosate in late January/Early Febuary for years now...no problems as long as the application is done correctly (calibration, product volumes, etc.). I take a skirted 5 gallon walking boom sprayer around the edge of the green to clean up any volunteer bent or poa, then tie in with my big sprayer. We have alot of winter play, so there have been times where I was forced to spray on frosted bermuda before a late shotgun...always scares me in terms of tracking, but have never had a problem with it. Have had some goosegrass break-thru in very high pressure, but all in all, have cleaned up the course very well with this program. You will need to realize that Ronstar is poor on control for broadleaves (particularly Dogfennel and Burnweed where we are), but they are relatively easy to clean up compared to goose. Good luck.
Josh Sawyer
Keowee Key Golf and Country Club
Class A Superintendent