South Africa Turf Disease Guide - Microdochium Patch

Disease and Insect Control
South Africa Turf Disease Guide - Microdochium Patch

Causal Agent:

Microdochium nivale (same species that causes pink snow mold)

Susceptible Turfgrass:

Most species of cool season turf


Microdochium Patch causes patches that are yellow or reddish-brown in colour and342.5 to 15 cm
in diameter. The periphery of the patches are reddish brown or pink in colour. “Smoke rings” – thin, brown borders around the diseased patches that appear only in the early morning – can occur. The patches occur in cool, wet weather. Blighting in streaks can also occur as a result of spore tracking on• equipment wheels.

South Africa Turf Disease Guide - Microdochium Patch

Conditions Favouring Disease:

Microdochium Patch thrives in temperatures from 0 to 15°C and in locations that experience more than 10 hours a day of foliar wetness for several consecutive days. It also favours areas high in nitrogen fertility and low in phosphorous and potash. Microdochium Patch also infects areas with slow growing conditions and heavy thatch.

Integrated Turf Management Tips:

  • Best to start preventative applications in early May and continue through winter • Maintain balanced fertility but avoid urea sources of nitrogen
  • Avoid using lime. Alkaline soils enhance disease development
  • Increase air circulation to speed turf’s drying process.
  • Minimise the amount of shade
  • Reduce thatch
  • Apply fungicides prior to or at the first signs of disease. Turf recovery is more likely in the Autumn • Make additional fungicide applications as needed during the Winter. Turf recovery is slow during the Winter so maintain a fungicide programme to reduce turf damage.

Just tap the links below to read about other turf diseases. Or download the full free guide at the bottom.

  1. Anthracnose
  2. Brown Patch 
  3. Brown Ring Patch (Waitea Patch) 
  4. Dollar Spot 
  5. Fairy Ring 
  6. Superficial Fairy Ring 
  7. Grey Leaf Spot 
  8. Large Patch 
  9. Microdochium Patch 
  10. Powdery Mildew 
  11. Pythium Blight 
  12. Pythium Root Rot (Root Dysfunction) 
  13. Red Thread 
  14. Rhizoctonia Zeae (Rhizoctonia leaf and sheath spot) 
  15. Rusts: Crown, Leaf and Stem 
  16. Spring Dead Spot 
  17. Summer Patch 
  18. Take-all Patch  and
  19. 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.

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Download the full guide here (14.41 MB).