Stem symptoms
These are some of the symptoms you might see on coconut stems. Click on the possible causes of the symptoms to find out more.
Symptom |
Possible cause |
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Stem left with no crown (© Northern Australia Quarantine Strategy, Department of Agriculture and Water Resources, Australia) |
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Net-like grooves on the trunk up to a few metres from soil level (© Gerald McCormak, Cook Island Biodiversity & Natural Heritage) |
Coconut termite | |
Discolouration on the insides of cut trunks (© Monica Elliott, USDA APHIS ITP, Bugwood.org) |
Ganoderma butt rot | |
Damage on a coconut palm trunk that looks like gnawing from an animal (© TNAU) |
Rats | |
Holes chewed by the red palm weevil showing ejected chewed material (top) and brown liquid (bottom) (© TNAU) |
Additional symptoms of palm weevil include:
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Distinct red ring showing when a transverse section of an infected trunk is cut (© Society of Nematologists slide collection) |
Red ring disease | |
Coconut palm with a tapered trunk (© George Wall, formerly CALS/AES University of Guam) |
Tinangaja - also look for a thin and battered crown |