A great question was asked Wednesday morning during our MGC board meeting.
What are those black spots on some of the greens?
Those black spots are the die back of Moss. I have been using a product called Quicksilver this season to burn down the moss and give the creeping bentgrass the advantage. Many of you never notice the moss in the turf canopy when it is green and health but you will notice it when its black or when the patches grow larger with time and become a detriment to your putting surfaces. Now is the time to control this pest. There is not a one and done product for moss control, I will have to continue the multiple low doses applications yearly to keep this bryophyte in check. Quicksilver is unique in that it is a contact herbicide and is not taken up and translocated within the plant. The advantage is it has zero effect on the creeping bentgrass greens maintained at 1/8".
Moss die back
Close up of Moss die back
You will also notice the effects of Quicksilver on other weeds growing on our putting surface. It will take out tiny mouse-ear chicweed and it also bleaches out pearlwort patches, as seen below.
Pearlwort bleaching out
Close up of Pearlwort bleaching out.