1. Oak Hill Case Solutions

2. general deterioration of #3 green shade from trees and tower delicate turfgrass reduced PAR and inactive phytochrome reduced tolerance to environmental stresses poor internal and surface drainage O 2 -deficient rootzone poor soil aeration poor growth, increased compaction poor air circulation from trees and shrubs hot, humid microenvironment allows build-up of temperature and humidity increased disease potential soil salinity and sodicity concerns soil compaction and physiological drought

3. Problem Statement Solution #2 Solution #3 Solution #1 Advantages Disadvantages Decision

4. Shade Strategies Tree Pruning/Removal Inexpensive alternative Enables addressing air circulation problem Ownership concern Green Relocation Expensive alternative Enables addressing other problems (air circulation, drainage, traffic)

5. Air Circulation Strategies Tree Pruning/Removal Inexpensive alternative Enables addressing shade problem Ownership concern Green Relocation Expensive alternative Enables addressing other problems (shade, drainage, traffic) Fan Installation Works where other (tree removal, green relocation) strategies are not practical Cost of running power to fan locations Noise Installation Reliability

6. Surface Drainage Strategies Green Reconstruction Expensive alternative Enables addressing other problems (shade, air circulation, internal drainage, traffic) Improve Sloping Inexpensive alternative Reduces internal drainage problem by lessening hydraulic loading

7. Internal Drainage Strategies Green Reconstruction Expensive alternative Enables addressing other problems (shade, air circulation, surface drainage, traffic) Cultivation/Topdressing Inexpensive alternative Increases volume of suitable rootzone Drill & Fill Provides water access to more-permeable soil

8. Soil Chemical Strategies Soil Salinity Increase green size Soil Sodicity Reduce shade