I get this question a number of times during my travels? How do handle the bare areas on my field?
This is a major problem on cool season athletic fields. All it takes is a simple blend of 2-3 products.
First, place topsoil and if you have it available, peat on the grounds shop floor.
Next, add seed at a rate equal to the soil/peat blend. Yes, I know this is a lot of seed, but being aggressive with seeding rates are critical in high traffic areas.
Blend all the materials together with a shovel and place in a bucket.
Finally, place in the bare area. Using some type of aerification before seeding is the best approach. In this case, a pitch fork provided the aerification.
Creating a seed bank in cool season athletic fields are critical to achieving 100% cover. Don't be afraid to seed frequently.
Go to j-dturf.com to learn more about J&D Turf.