[CANUFNET] graft incompatilibity

[For Trees Company Ltd.]

Hi Jeff, 
Yes, for sure there are often graft incompatibilities that are made worse when the Black Ash fails to thrive. Black Ash typically only do well when planted close to water in fertile, sandy acidic soil: hence their alternate common name: "Swamp Ash" So unless you can replicate their native environment, it is not a species that I would recommend for Urban Areas in the Prairies. In Alberta, we have lost thousands of "Native" and Manchurian Swamp Ash due to lack of soil and climate (drought) hardiness as well as insects, ( Cottony ash psyllid), so it is beyond me why any municipality would want it planted, especially given the inevitable coming  of the Emerald Ash Borer to a town near you!
Gerard Fournier, BCMA # PR-0130BT
Owner/Operator
For Trees Company
Tree Canada Advisor-Southern Alberta

Trees For Life...Landscapes for Living...
403-335-8965
CHECK out our new web site at 
www.fortrees.ca----- Original Message ----- 
  From: Boone, Jeff (IS - Parks) 
  To: 'canufnet at list.web.net' 
  Sent: Monday, August 17, 2009 8:22 AM
  Subject: [CANUFNET] graft incompatilibity


  Hi

   

  In Saskatoon, we are having problems with many of our black ash starting to decline when they are 15-20 years old.  They have a few different symptoms but typically we see leaf drop, branch death and delaminating bark.  All of the trees are grafted onto green ash root stock.  When we dissected the graft we saw a very clear line at the graft.  It looks like the graft did not form properly.  There was no obvious overgrowth at the graft but there is a kink at the graft that becomes more pronounced with age.  Not all black ash are affected but we only began planting in the early 90s.

   

  Has anyone experienced graft problems with ash or similar symptoms in other trees?  

  Thanks

   

  Jeff W. Boone

  Entomologist B.Sc. M.Sc 

  (306) 975 3466

  (306) 220 5368 (cell)

  1101 Ave P N

  Saskatoon SK

  S7K 0J5

   
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