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Bentgrass Dead Spot Fungicide

Ophiosphaerella agrostis Fungicide

Description of Bentgrass Dead Spot (Ophiosphaerella agrostis):
Bentgrass dead spot is a disease that affects creeping bentgrass and was only just discovered in the early 2000s. It especially affects bentgrass putting greens, starting as spots that are dime-sized and eventually grow to up to 4 inches in diameter. The disease is often misidentified as ball-marks from golfers.
According to the manufacturer approved labels: The following fungicide, applied at the listed application rates, will control Bentgrass Dead Spot.
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Blanket Treatment
Application Interval:
14 days
Label Rate:
4 - 6 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 5333 - 8000 square feet
at a cost of
$6.44 - $9.67 per 1,000 sqft
For prevention, apply in early June or based upon local Extension Service recommendations. Apply at 14 day intervals. Rotations and/or tank mix combinations may be used for season long disease prevention.