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disease in Colocasia esculenta

Yams    Guatemala

I found some plants with the same disease.
The soil is dry near by a little body of water.
Around those plants there are a few lemon and orange trees.

Can anybody Id this disease please?

Thanks,

- Erick


Posted by: Erick (1 point) Erick
Posted: December 13, 2017




Answers
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Hi Erick, is there any above ground symptoms? Also, it looks like tubers are tunneled by insects. Did you see any larvae or adult insect?


Posted by: Dr. Ravishankar Narayana (11 points) Dr. Ravishankar Narayana
Posted: December 13, 2017


Erick commented,
There's no symptoms above the ground.
The plant looks like a vigorous one but when you root out it can see the damage.
I found several white/gray larvae inside the tuber.
over 2 years ago.

Dr. Ravishankar Narayana commented,
Thanks for your reply Erick. It would be helpful if you upload larvae image. I am not sure this pest is present in your area, but it is quite common on taro- Taro beetles (Papuana spp.) For more information
http://aciar.gov.au/files/node/9250/m...
over 2 years ago.

Erick commented,
In my country the Papuana spp has not being reported yet.
That illustrated guide will help me.
Thank you Dr. Narayana!!
over 2 years ago.



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