Diagnosis of disease

[Sigera C]

Dear all

Please help me to identify the disease and solution for spreading to other plants.

Closer look to attached pictures 

[John Randles]

Not typical of phytoplasma, virus or viroid infection.

Regards

John Randles.

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<20200829_110759.jpg><20200829_110839.jpg>

[Sigera C]

Thanks 

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[David Gollifer]

Could it be damage by Brontispa a leaf miner

David Gollifer

Sent from my iPhone

On 1 Sep 2020, at 12:21, Sigera C <sige...@gmail.com> wrote:



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[lollivier]

Hi ! In which country is it ? Which continent ?

Yes, I agree with David Gollifer. It might be a leaf miner.

Regards,

Laurence Beaudoin-Ollivier

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-- 
Dr. Laurence Beaudoin-Ollivier (phD, HDR)
CIRAD
Département Performance des systèmes de production et de transformation tropicaux (PERSYST)
Unité Performance des systèmes de culture des plantes pérennes (UR 34)
Entomologiste Palmiers
TA B 34/02
Avenue Agropolis
34398 Montpellier cedex 5
France
Tel : (+33) 4.67.61.59.80
Tel secrétariat : (+33) 4.67.61.71.29

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Site web: www.cirad.fr

[Jean-Pierre Labouisse]

I agree with Laurence. It looks like a leafminer, maybe Promecotheca. 

Please visit the page: https://www.pestnet.org/fact_sheets/coconut_leafminer_060.htm. 

You need to catch larvae or adults to confirm. 

If it is Promecotheca there is no  really effective treatment (except maybe on very young palms or in nursery). We had an outbreak of this pest in Vanuatu with very significant damages a few years ago, but after one or 2 years there was a natural regulation (probably by parasitoides), and the pest disappeared as rapidly as it appeared, and all the palms recovered.

 

Jean-Pierre LABOUISSE

Plant breeding and genetic resources

CIRAD

UMR AGAP

TA A-108/03 

Avenue Agropolis

34398 Montpellier Cedex 5

France

Phone office : +33 (0)4 67 61 57 41

[kantha...@yahoo.com]

Dear all,

RE: Diagnosis of disease.

I missed initial communication on this matter.

Can I have the original post to see if I can be a help.

Lalith Perera

Coconut Research Institute 

Sri Lanka

https://groups.google.com/d/msgid/coconut/e3f9c415-cb77-4447-9ca5-b070c75cc73cn%40googlegroups.com

.

[Sigera C]

It's in Sri Lanka, Kurunagala 

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