You may have citrus leafminer, which has been very widespread the past few years. It's an insect, so fungicides wouldn't be effective against it. There is a good article on IPM for citrus leafminer at the UC Davis IPM website: http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74137.html. Have a look at the photo there and see if it looks like your problem. If it's leafminer you'll see hollowed-out areas inside of the leaves and they will sometimes be completely emptied of tissue, leaving only the semi-transparent cutin layer on the top and bottom.
Good luck!
Owen
On Sep 13, 2009, at 4:40 PM, Elizabeth Vaccaro wrote:
_______________________________________________Hello Everyone:
I have a very old tangerine tree that has curly leaf. I wish to avoid commercial fungicide but I can't seem to get rid of it. I've used a couple of alternative remedies including oils, but no luck 3 years later.
Can anyone make any recommendations?
Many thanks
Elizabeth
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Owen E. Dell
Landscape Architect • Educator • Author
P.O. Box 30433 • Santa Barbara, CA 93130
805 962-3253
owen@owendell.com
www.owendell.com
QUOTE OF THE DAY
"We are the larvae with the changing skins, the ugly caterpillars of
a society that is slowly, very slowly, wending its way to the triumph
of right over might."
J. Henri Fabre
entomologist & author
1823-1915
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