12/26/2013 7:12 AM
Paul, we've had good luck with Trimec bentgrass formula and a sponge/tube applicator. The swine cress gets lit up a day or two after, making it very noticeable what you hit and missed, and it will definitely leave a little void as it goes out. I've had best results starting dabbing week before aerification. By the time golfers notice what's going on we've closed the greens for punching, and by the time the greens heal up the spots have generally healed also.