Soil Temperatures

With the cooler weather finally here to stay the soil temperatures have had the bottom fall out from them.  As recently as four days ago the soil temperatures were still climbing into the mid fifties, whereas now they are holding steady in the low thirties.

This is particularly evident in the following picture that shows a graph of our soil temperatures over the last week.  The colors on the graph show different areas on the course such as greens and fairways.  It is interesting to note the large variation in soil temperatures in the graph between the orange line to the greens lines.  

The green lines represent two different greens on the course and the orange line represents a fairway area. There is nearly a fifteen degree temperature difference between the green and  fairway location that are no more than 450 feet apart from each other.  This temperature difference is due to the fact that the native soils are better able to retain the heat in them versus a green that is built out of  sand. The sand areas contain more pore spaces for oxygen which separates the particles from each other not allowing conduction for heat transfer.