Red Thread

Turf Disease

Red Thread is found in any area of turf, especially golf greens, tees, fairways, bowling greens, lawns, parkland and sports pitches.

The symptoms depend on the grass species and severity of attack. Symptoms often start as small mostly circular patches of dead leaves interspersed with live plants. The patches may also have a pink tinge. Closer inspection will reveal pale pink to red needle or horn-like outgrowths (the red threads) Pink flocks of mycelium (resembling candyfloss) may also be present in conducive conditions.

When is Red Thread likely to attack turf?
When growing conditions are good infection may be transient but under poor growing conditions attacks may be severe.

Effects of Red Thread:
Red Thread does not commonly affect the playing quality of the turf but reduces the aesthetic appearance. Red Thread may thin the sward.

Caused by: Laetisaria fuciformis (McAlpine).

Treating Red Thread Turf Disease in the United Arab Emirates
Treating Red Thread in Golf Course Turf UAE

Red needles and pink flocks of mycelium

Fungicidal Control: Daconil WeatherStik has a label recommendation for red thread control in the UAE.

Parameter Daconil WeatherStik
Mode of action Contact
Optimum timing At first sign of disease
Dose rate 30 l/ha
Water volume 500 l/ha

Trials have shown that Heritage also controls Red Thread.

Suggested Programme:
When Red Thread is observed, apply 8.0.0 (N.P.K) at recommended rate. However be careful in autumn months to prevent microdochium (fusarium) patch occurring.

Integrated Turf Management:

  • Use recommended rates of fertiliser at the recommended timing to prevent low fertility problems occurring.
  • Oversow with grass varieties that are less susceptible to Red Thread.
  • Maintain good drainage and manage the turfgrass to reduce surface moisture.
  • Keep thatch layers to a minimum.
  • Light penetration (especially morning sunlight) and airflow should be encouraged to dry the turf surface quickly.
  • Collecting clippings helps to prevent the spread of infected material.
How to treat red thread turf disease on golf course in the United Arab Emirates

Symptoms of Red Thread 

High Risk Situations:

  • Fescue is the most severely affected, although there is variation among subspecies and cultivars. Lolium perenne is also very susceptible.
  • Low fertility.
  • Warm and wet conditions.
  • Slowly growing turf.
  • Moisture retentive turf surface

Other Diseases in this category: