Pacific Pests, Pathogens and Weeds - Online edition

Pacific Pests, Pathogens, Weeds & Pesticides

Coconut thread blight (167)

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  • Narrow. Southeast Asia, Oceania. On coconut. Usually, a minor disease. More severe in wet areas of the interior of some Pacific islands.
  • Threads of the fungus in patches on the underside of leaflets of older fronds, often at the ends, causing rots near the mid-rib. 
  • Spread is thought to be by spores; also, by contact between leaflets.
  • Cultural control: avoid shade, or planting in forests; use wide spacing (normal is 7.5x7.5 m) or intercrops; if planting on slopes, make sure they face the morning sun so that leaves dry rapidly; cut out rots and burn.
  • Chemical control: none recommended.
Common Name

Coconut thread blight

Scientific Name

Corticium penicillatum

AUTHOR Grahame Jackson
Information from Corticium penicillatum. Wikipedia. ( Photos 3&4 Kohler F, et al. (1997) Diseases of cultivated crops in Pacific Island countries. South Pacific Commission. Pirie Printers Pty Limited, Canberra, Australia.

Produced with support from the Australian Centre for International Agricultural Research under project PC/2010/090: Strengthening integrated crop management research in the Pacific Islands in support of sustainable intensification of high-value crop production, implemented by the University of Queensland and the Secretariat of the Pacific Community.

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