Saturday, February 27, 2010

It looks bad because it's working



This is a photo of the putting green with some moss that was sprayed with a herbicide last week. Healthy moss is green of course, and blends in with the bentgrass and poa annua without drawing too much attention to itself. Now that we've sprayed it and the weed is damaged and black, it looks terrible and that is a good thing.

Next week we will spray again and that should knock it out completely. Moss, unchecked, can really ruin a green over a couple of years. The only greens that currently have a small population of moss are the putting green and #1. Both of these are the predominant bentgrass greens and they thin out a little bit in the winter, providing some growing space for moss. Our frequent use of growth regulators and low fertility add to the problem creating a very nice environment for this dense little plant.


The herbicide we use is called Quicksilver which I've found to be very predictable and safe even during major heat in the summer. It sure is nice to have all of these tools at my disposal as a turfgrass manager. Just a few years ago we would walk the greens with bottles of dish soap, baking soda, and other concoctions trying to beat down the moss. Most of those remedies would turn the moss black, but never achieve a full kill.

Moss is pretty little plant when it's in the woods, but who wants to putt up a tree.

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