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Diagnosis of walnut disease

Walnut    None Given

The symptom are only on the leaves.
Leaves necrosis follow the same pattern: first the tissue between the veins become chlorotic; then margin necrosis happen.
Decreasing leaves mass on top of tree is another symptom; just like it naked!
Can any one help me on this please?


Posted by: Hamed (1 point) Hamed
Posted: August 16, 2016




Answers
1
point
Hamed,
Do you have soil and air temperature measured before the symptoms appeared? It can be caused by overheated soil that kills feeder roots. See a related discussion:
http://blog.extension.uga.edu/pecan/2...

Regards
Alex


Posted by: alex ignatov (1 point) alex ignatov
Posted: August 17, 2016


Hamed commented,
Soil temperature over heateted? I didn't think so; but it's a good idea! I will consider it in other case; thanks.
over 7 years ago.



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