Did you ever wonder what these areas pictured were on our greens this year?
2009 was a tough year at Rolling Hills and many other courses in the St. Louis area for this disease called "Dollar Spot".
Our fungicide program here at Rolling Hills is based on the "as needed" concept. During optimum disease pressure months we are continually scouting for signs of any disease.
Normallly fungicide applications for Dollar Spot can keep you free of disease for 14-21 days. In 2009 however there were occasions where at the 10th day we started to see disease outbreak. Low fertility and abnormally wet conditions only aided in the disease outbreaks.
Although there are advantages to low fertility based golf course greens, such as smoothness and green speed, the low fertility in 2009 worked against us. For more information regarding Dollar Spot you can read on it at www.ces.purdue.edu/extmedia/BP/BP-105-W.pdf
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