Wolfgang

Wolfgang

Posted on 03/12/2013


Photo taken on March  1, 2011


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Asian palm weevil destroys many trees on Bali

Asian palm weevil destroys many trees on Bali
The infestation of the pest results in yellowing and wilting of palms, that may lead to the death of the affected plant. The crown wilts first, and lower leaves will follow, due to damage to vascular tissue. Major symptoms such as crown loss or leaf wilt are usually only visible long after the palm has become infested. Secondary infections of opportunistic bacteria and fungi may occur within damaged tissues, accelerating decline. By the time these external symptoms are observed, the damage is usually sufficient to kill the tree, and the infestation may have been present for six months or longer. In high-density infestations, sounds of the larvae burrowing and chewing can be heard by placing one's ear to the trunk of the palm. Recent research has been conducted using electronic listening devices or dogs trained to recognize the scent of weevils or palm decay to detect infestations at low densities earlier in the process.

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Comments
chris
chris
sehr schöne Erklärung
3 years ago.
גודמן Guzman(n) exflickr jacoibo5731 15Adar2 古斯曼
גודמן Guzman(n) exfl…
Das ist wie Afrikanischeoelpalmen in Suedamerika. (meine DT ist arm).
3 years ago.
Elfriede
Elfriede
wunderschön.
3 years ago.