North American Fruit Explorers mailing list at ibiblio

["Lon J. Rombough" <lonrom@hevanet.com>]

Sounds like something has affected the graft union.   Blackline in walnuts, when English walnut was grafted on black walnut, was due to a cherry virus that got into the English walnut.  It traveled to the graft union, where the black walnut had a hypersensitive reaction and the tissue layer at the union died to block the viruses' entry into the black walnut.  Of course that cut off the English walnut's connection and it died.   
What you describe sounds like a similar type of reaction.
-Lon Rombough
Grapes, writing, consulting, my book, The Grape Grower, at http://www.bunchgrapes.com  Winner of the Garden Writers Association "Best Talent in Writing" award for 2003.
On Sep 8, 2005, at 4:55 PM, Lisa Almarode wrote:

My 4 yo Beauty plum tree is wilting - leaves are reddish, drooping,
curled in tubes, fairly evenly all over the tree (about 20% green).  
The root suckers are thriving and green.  It's much too early for fall 
here, and the Santa Rosa next to it is still all green.  It had a 
small crop, long ago picked.  It seems unlikely to be drought, since 
it's the only tree affected (of some 25 assorted trees).  What could 
be happening, and is there any way to save it/prevent it?

And something similar happened to the Puget Gold apricot this spring - 
it flowered, started to leaf out, then wilted and died.  It's root 
suckers are taller than me now.  I hope something isn't going to pick 
off all the stone fruits, one by one...


Lisa in Ashland Oregon
USDA Z7 - Sunset Z7 - 1800' - 19" annual rainfall

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