When managing actively growing Kentucky bluegrass, bermudagrass, and zoysiagrass practice tees, sand is applied to fill the divots but seed is not included because there is enough viable tissue throughout the divot for recovery. If a bermudagrass practice tee is overseeded and in play during the winter, perennial ryegrass seed would be included, and supplemental fertilizer applications will be necessary. Recognize that overseeded ryegrass will still germinate and grow more slowly during the short days and cooler weather of winter. In places where there is heavy demand on an overseeded practice tee, some courses have started resodding areas of the practice tee during the winter season to maintain quality playing conditions. The Green Section Record article “Instant Practice Facility Tees” details this process. If practice tee conditions are a priority in the spring, it may be desirable to overseed a portion of the bermudagrass tee and leave a non-overseeded area out of use for the winter. This non-overseeded area will then be in good condition and ready to go earlier in the spring while you transition the overseeded area.
How often divots are filled depends on available labor and maintenance frequency. Ideally, divots are filled weekly at a minimum and more often if labor resources permit. Filling divots more than once per week will start the recovery process sooner and any edge that can be gained will be beneficial in the long term. Careful attention is required when divots are being filled to ensure excessive mix is not being used. Overfilling divots will contribute to undulations developing, so taking the time to educate employees on how to properly fill divots is important.
Weed encroachment, especially crabgrass and goosegrass, is often a challenge because divots create voids in the playing surface where weed seeds can germinate. Whether or not preemergence herbicides should be used on a practice tee is often debated because of the impact on germination if seed is included in divot mix. In general, preemergence herbicides can impact root development of existing turf and germination and establishment of seed, but how significantly depends on many factors. If you are thinking about using a preemergence herbicide on your practice tee, setting up a test plot for a season is recommended to evaluate how divot recovery is impacted.
Setup Logistics
Practice tee setup is a major factor in playing conditions and recovery. Hitting stations can either be moved from the back to the front or vice versa and there are benefits and pitfalls to each strategy. Moving from the back to the front provides an opportunity to fill divots while golfers are practicing because play is moving forward of the most recently used areas. Another benefit is that when divots are cleaned up, whether with a blower or sweeper, recently filled divots will not be disturbed. The downside of this strategy is it gives golfers the opportunity to creep forward and take divots in the area allocated for the next day.