Do you have localized dry spots on your green? These areas appear blueish and water beads off the surface. If you take a core sample the ground underneath will be dry even after watering.
You may want to try a wetting agent to resolve the problem.
You can use a product called RootZone eXel Pellet RX 0-2-1 (pictured below) sold by Ontario Seed Corporation. For small areas it can be applied with a watering can. At room temperature the product is solid but for these small applications a 3-5 second cook in a microwave produces liquid. Add 5 ml of product to two gallons of water and soak the area of concern.
For large areas a water filter housing (pictured below) containing the whole solid puck is needed. The housing is interconnected by garden hoses to a water tap and lawn sprinkler. The wetting agent is applied by watering. Unless you have a self-propelled lawn sprinkler, it needs to be moved manually. Some clubs may be able to install the filter housing directly into their green irrigation system.
The cost is around $230 for 6 containers, which will treat 11,000 m2. Water filter housings start around $45.
You will also need fittings to connect the filter housing to garden hoses.
