Some claim fans help greens survive summer stress periods.
Fans move air, increasing evaporation and decreasing temperature.
The use of fans on golf courses throughout the U.S. has expanded significantly since 1991, when they were first introduced as a management tool. Proponents claim that the fans help creeping bentgrass greens survive peak summer stress periods by lowering turf temperatures, drying wet greens, and decreasing the incidence of disease. The winds generated on these problem areas should be in the range of three to five mph. Fans should be located so that the wind generated one inch above the turf does not exceed six mph for extended periods of time. In locations where this is not practical, pay careful attention to the irrigation of turf which is exposed to wind velocities greater than five mph to avoid dessication.