South Africa Turf Disease Guide - Red Thread
Red Thread – Laetisaria fuciformis
Most turfgrasses, but particularly severe on Bermudagrass, Creeping Bentgrass, Fine-Leaf Fescue, Kentucky Bluegrass, Perennial Ryegrass and Poa Annua.
Red Thread causes patches that are reddish-brown in colour and 2.5 to 10 cm in diameter up to 0.5 m.
Conditions Favouring Disease:
Red Thread thrives in temperatures between 4°C to 29°C and in locations that are low in nitrogen. It also occurs in areas that experience more than 10 hours a day of foliar wetness for several consecutive days.
Integrated Turf Management Tips:
- Mow turf frequently and collect clippings to remove diseased portions of the leaves
- Maintain adequate nitrogen and a balanced fertility
- Apply moderate to high amounts of phosphorous and potash
- Maintain the soil pH between 6.5 to 7.0
- Reduce shade
- Increase the air circulation to the turf’s drying process
- Irrigate turf deeply and as infrequently as possible
- Use fungicides to control disease when it is a chronic problem
Just tap the links below to read about other turf diseases. Or download the full free guide at the bottom.
- Brown Patch
- Brown Ring Patch (Waitea Patch)
- Dollar Spot
- Fairy Ring
- Superficial Fairy Ring
- Grey Leaf Spot
- Large Patch
- Microdochium Patch
- Powdery Mildew
- Pythium Blight
- Pythium Root Rot (Root Dysfunction)
- Red Thread
- Rhizoctonia Zeae (Rhizoctonia leaf and sheath spot)
- Rusts: Crown, Leaf and Stem
- Spring Dead Spot
- Summer Patch
- Take-all Patch and
- Take-all Root Rot
If you would like to have a complete copy with all the turf diseases, you can download it on the link below.
Download the full guide here (14.41 MB).