Bondi Junction NSW, Australia
Fact Sheets
2021-09-08T03:12:02.9341623Z
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Coconut leaf spots (090)
Pacific Pests, Pathogens and Weeds
Pacific Pests, Pathogens and Weeds

Summary

  • Widespread distribution. Two leafspots: brown leaf spot (BLS) - Pseudoepicoccum widespread in the tropics ; and grey leaf spot (GLS) - Pestalotiopsis in Southeast Asia, Africa, Caribbean, Oceania. Both occur on coconut, betel nut, oil palm. Fungal diseases of low importance.
  • BLS – oval spots, up to 10 mm long with grey centres and brown margins. Black powdery spores mass below. GLS – grey with thin brown border and tiny black dots containing the spores.
  • Spread in wind and rain. Worse on older leaves.
  • Cultural control: improve nutrition (diseases are a sign of poor growing conditions); decrease shade in nursery.
  • Chemical control: none recommended as treatments would likely be uneconomic.

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