vein clearing

Orange    Iran

do you know whats the problem with these leaves?vein clearing is happened on the leaves.
thank you

Posted by: golsam (1 point) golsam
Posted: October 16, 2017


Did you spray any chemical? I think it could be phytotoxicity. Generally, chemical like diuron (an algicide and herbicide) uptake causes this kind of symptoms.

According to University of California, "Leaf veins can turn yellow or white (vein clearing) after herbicide application due to citrus root uptake of bromacil or diuron. After simazine exposure, leaves yellow between veins with the chlorosis increasing in severity in proportion to the amount of herbicide exposure."


Posted by: Dr. Ravishankar Narayana (11 points) Dr. Ravishankar Narayana
Posted: October 17, 2017

golsam commented,
hello thank you very much for your answer, but we didn't spray any chemical so could it be beacause of virus?
about 3 years ago.

Dr. Ravishankar Narayana commented,
It is very hard to tell by only seeing the image. It needs to be confirmed by laboratory testing. How many trees are affected?
about 3 years ago.

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