Proven, Targeted Control of Dollar Spot
Posterity® fungicide represents the latest advancement in SDHI technology delivering power and endurance for stronger dollar spot control. A reliable and effective addition to fairy ring solutions. Posterity binds strongly to complex II enzymes in target pathogens, enhancing fungicide performance and efficacy.
Active Ingredients: Pydiflumetofen
FRAC Classification: Group 7 Fungicide Succinate dehydrogenase inhibitor (SDHI)
Rate/ ha: 0.5 -1 L/ha, Foliar applied
Dollar Spot
Causal pathogen: Clarireedia jacksonii
Susceptible turf species:
- Major host – Seashore paspalum
- Minor host – Zoysia grass, Bermudagrass
Favorable Condition:
- Warm, humid weather and cool nights that produce heavy dew (15-30ºC)
- More than 10 hours of leaf wetness for several days is favorable for disease development
- Disease is severe on turf subjected to drought stress and low fertility, especially N
Dollar Spot Control: Effective Management Strategies
Dollar spot is a common and persistent fungal disease that affects turfgrass, particularly on golf courses. Implementing a comprehensive management approach combining cultural practices and targeted fungicide applications is crucial for effective control.
- Maintain adequate to high N fertility when disease is active
- Manage thatch levels through scarification, aeration, and top dressing
- Reduce dew on turf canopy with irrigation, mowing, or hose dragging
- Minimize surface wetness
- Avoid night watering; irrigate early morning/early afternoon
- Maintain adequate air movement through selective tree removal and use fans if practical
- Prevention is better than cure
- Chemical control:
- Pydiflumetofen (Posterity)
- Penthiopyrad (Velista)
- Chlorothalonil (Daconil WeatherStik)
- Propiconazole
- Difenoconazole
- Fludioxonil
- Thiophanate-methyl
- Rotate the fungicide use to manage and prevent resistance build-up
