Causal organism: Pink (Microdochium nivale)
Grey (Typhula incarnata)
| Problem |
Snow Mould |
| Host Grass Types |
All cool season grass species |
| Symptons |
Pink – bleached dead patches, white/pink mycelia Grey – Yellow/brown patches, bleached patches, grey/white mycelia |
Conditions that can favour the development of the disease
- Prolonged periods of snow cover
- Disease activity is most severe when snow falls on unfrozen ground
- Excessive foliar growth and thatch buildup are important factors encouraging the development of pink snow mould and Microdochium patch
- Restricted air movement, poor soil drainage, inadequate levels of potassium, and heavy traffic can also enhance the disease
- The disease may also develop under tree leaves that remain on the turf for long periods during cold, wet weather
Management strategy to reduce the likelihood of attack
- Do not apply excessive levels of nitrogen when cold weather or snow is expected
- Improve surface drainage
- Reduce thatch accumulations
- Prune trees and remove unwanted vegetation to improve air movement
- Remove leaves and other debris during autumn and winter from turf that is not covered with snow
- In regions where heavy snow is anticipated, take steps to minimize the duration of snow cover (snow fences or plant landscape plants in strategic locations to prevent excess snow accumulation)
- Prevent traffic on snow-covered turf, as compacted snow will melt more slowly and increase damage from pink snow mold
- A pre-emptive fungicide application prior to snow fall would be desired
Treating Microdochium nivale with fungicide
- Ensure you achieve good coverage by using the correct nozzles. The Syngenta XC Turf Nozzles have been engineered to achieve an improved coverage with reduced drift compared to flat fan type nozzles. The Foliar XC 04 is recommended for foliar fungicide applications.
Preventative Strategy (Guidance Only)
Curative Programme (Guidance Only)
