Fine Turgrass Management

Fine Turgrass Management

Steve Cook, CGCS, MG - Director of Agronomy

Friday, September 23, 2016

Short Game Green

This week we are regrassing the larger Short Game green to a newer variety of bentgrass 'Pure Distinction'.

Doing this now allows us to:
  • Develop BMP for any new construction that may occur on the golf courses.
  • Give the members an opportunity to putt on a new bentgrass variety.

Thursday, September 22, 2016

Update 9/22

Today we arerify #15 and #6 fairway South. The weather is perfect and with limited availability this fall, today is a perfect day to make progress. This completes 1/2 of the South fairways. We continue on #14 fairway next week.

Monday, September 19, 2016


We will be aerifying fairways this fall in play during the week, as the weather allows. Due to the lack of open Mondays, it will be necessary to perform this very important practice when we have the opportunity. The range of weather conditions is narrow. It must be sunny and dry for the "cores" or "plugs" to dry enough to be pulverized and reincorporated.

We will not "core" aerify greens this fall in order to allow members better access. We will be solid tine aerifying greens which is not disruptive to play.

Thursday, September 8, 2016


  • We aerified the following South fairways on Tuesday of this week: 1, 2, 3, 8 and 9. The weather was perfect for aerification, sunny and warm.
  • During the US Amateur we had almost 4" of precipitation.
  • We are not "core" aerifying greens this fall.
  • The drainage project on the North Course starts October 10th, more details to follow.

Tuesday, July 19, 2016

Monday Maintenance

Here are the Member Service items we completed on Monday when both courses were closed:

  • South greens/tees/fairways sprayed with fungicide
  • Topdress North/South greens
  • Apply "grub" control on South green banks
  • Sand added to #3 South greenside bunkers
  • Trimmed all South bunkers
  • Verify all greenside irrigation heads for proper rotation
  • All routine mowing
  • North greens/tees sprayed with fungicide
  • Hand water bunker capes North Course
  • Tree pruning/maintenance/removals
  • Driving range maintenance

Thursday, May 12, 2016

Weather Averages

Average precipitation in April - 2.76"
Precipitation at Oakland Hills April 2016 - 2.76"

May has started off cool and wet, 1.31" has been recorded here since May 1.

Monday, May 9, 2016

Update Monday, May 9th

The South greens look great only 5 days after aerification. The North greens are a little slower to recover, but should be good for Men's League this week.

Weather prevented us from finishing South fairway aerification last week, we'll finish that today.

Herbicide applications are complete for the spring and will resume during the optimal window for weed control, October.

Monday, April 25, 2016

Growing Degree Days

Thank you Purdue and MSU for this explanation, which I think is pretty good:

What is a Growing Degree Day (GDD)? A growing degree day (GDD) is a method to track the heat units that have accumulated and are needed for plant growth and development. The formula for calculating GDD is:
GDD = ((max temperature °F + min temperature °F) ÷ 2) - base temperature °F, where the base temperature is normally either 22, 32 or 50 °F but varies based on the model.

For example, if the high today was 74°F and the low was 52°F and we used a base temperature of 50°F, our calculation would be, GDD= ((74°F + 52°F) ÷ 2) - 50°F = 13 

Models that help us predict plant development use accumulated GDD which is simply adding the GDD calculated each day and determining how many GDD units have accumulated thus far.

In some cases accumulated GDD can be used to monitor when weeds might germinate or flower or when grasses might produce a seedhead while in other cases accumulated GDD can be used to help optimize application timing such as with preemergence crabgrass applications or the selection of amines or esters for spring broadleaf applications. Research into plant development and optimal herbicide application timing has determined a window of accumulated GDD needed to best predict when to time these applications or when these events might occur.

Friday, April 22, 2016


North greens are healing nicely. We can focus a little more attention on course detailing - bunkers etc. - now that aerification on the North is finished.


Thursday, April 21, 2016

Aerification Update

The North Course aerification of greens, tees and fairways went great! Perfect weather - dry, low humidity and 65 deg - helped make this process flow perfectly. Thanks to the staff for the long hours and attention to details.