Grain is a word we use to describe when the turf is laid over and growing horizontally (prostate) rather than in a vertical manner. This affects how a ball rolls on a green by making putts go faster or slower and minimizing or maximizing the break depending on the direction of the grain in relation to the direction of the putt. Grain does not really exist any more on greens, especially to the extent that it once did. The turf on greens is so actively managed by verticutting, grooming, brushing, and low heights that grain is not a factor in putting anymore.
Brushes are mounted to the front of our greensmowers to stand up the turf before mowing. While brushing can be a little aggressive for July type weather, we will do it quite a bit for the next month or so to train the greens to grow upright. This practice also removes excessive leaf material resulting in faster, smoother greens.
We see much more grain formation on the bentgrass in the fairways than on greens. At higher heights of cut the turf wants to lay over.
This is some very ugly grain on our tenth fairway. We have similar patches on the sixth and fourth fairways as well. It seems like the wetness of those fairways has encouraged one type of really grainy bent. This severe condition is very isolated but makes for this great illustration.
This season the budget has allowed us to more actively manage the grain on the course and the biggest change is on the fairways. Fairways are now managed like greens were twenty years ago. We are raising the height of cut on the fairways in an effort to put more turf under the ball. The increase in height as allowed for an explosion of graininess that you see in the picture above. If the turf lays over, it becomes a very tight lie. The way we manage it is through brushing (like on the greens except bigger and pulled behind a utility vehicle) and verticutting. We want the turf to stand up and present the ball.
Matt pulls a brush across the fairways for grain control.
Anastacio verticuts a fairway to stand up the turf.
A close up of a verticut unit…one can see how the blades would cut grooves into the turf.
The result of verticutting. The turf is standing up and ready to be mowed.



