Dollar Spot On Pencross Bent Grass - Knowledgebase Question

Sandwich, MA
Question by Papagab
February 14, 2000
I have installed a small golf green which repeatedly is attacked by small brown spots which appear in late in late June and start growing larger. I have been told that it is dollar spot. Chemicals seem to work, but the disease always reappears.


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Answer from NGA
February 14, 2000

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Dollar spot is usually caused by a nitrogen deficiency when the soil is dry, usually in early summer. Adding frequent light applications of pure nitrogen (1/2 lb per 1000 square feet in June, July and August) during the infection may help the lawn recover. Also, regular, deep watering will help control the disease as will regular mowing to cut off the infected tips. Good luck!

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