Bondi Junction NSW, Australia
Fact Sheets
2021-09-08T03:11:57.2764279Z
   2
Coconut false smut (311)
Pacific Pests, Pathogens and Weeds
Pacific Pests, Pathogens and Weeds

Summary

  • Worldwide distribution. On coconuts, date palms, ornamental palms. A minor fungal disease. Unlikely to affect yield of coconuts or date palms; however, possibly a 'cosmetic' disease on palms grown for landscaping, or a problem in the nursery.
  • It is not a smut disease. Small, grey or black pustules, 1.5 mm diameter, emerge through the leaf, mainly on the top surface. Spores and sterile threads emerge from the pustules.  
  • Spread by spores in wind and rain.
  • Cultural control: avoid over-crowding in coconut nurseries. Ideally, grow coconuts in polythene bags and space them at least 1 m apart; not economic to attempt to control the disease in the field - no evidence that it effects yield.
  • Chemical control: if fungicides are required in the nursery, use copper products or mancozeb as protectants, or thiophanate methyl (sometimes formulated with chlorothalonil) as a systemic product.

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