Watching firmess and OM2 change

I've been collecting OM246 samples at Bangsai CC since 2019. Some of those greens have the same grass and rootzone as they did in 2019, but the A and C courses have had the greens rebuilt with new rootzone material in the past couple of years. This 27 hole facility now has three different nines, each with Tifeagle greens of different ages.

That age difference shows up in the OM2 test results from last December, and in the firmness measurements…