[CANUFNET] green ash decline

[jmccready]

The Regional Forest Network in Eastern Ontario has been having ash decline in our region for a number of years. .The Ontario Ministry of Natural Resources is pointing to stress in the trees most likely from a few hot dry summers we had a few years back. The complication we have is the Emerald Ash Borer in Ottawa, thus the Candian Food Inspection agency is going to start doing some assessment of these areas which has ash decline.No EAB has been found outside of urban Ottawa.
    In Carleton Place where I live and  am the resident arborist we have taken down some affected ash but found no signs of EAB . These trees were hit hard in the ice storm of 1998, have been attcked by vagabond aphids and have gone through those droughty periods.We are ruling it to these stresses but realy do not know the exact cause of this decline in Eastern Ontario, West Quebec.We are still looking at the situation we have.

Jim McCready R.P.F
Chair
Regional Forest Health Network
  ----- Original Message ----- 
  From: J Sloggett 
  To: Canadian Urban Forest Network 
  Sent: Tuesday, June 29, 2010 3:22 PM
  Subject: Re: [CANUFNET] green ash decline


  We had significant leaf drop from white ash and some Manitoba maples this spring in Port Credit (South Mississauga, Ontario).  I've been watching them for signs of the Emerald Ash Borer, but that doesn't seem to be the cause.  Perhaps it is related to the very dry spring here???


  On Tue, Jun 29, 2010 at 3:08 PM, Jim Donnelly <jdonnelly at cityofgp.com> wrote:

    Hi Jeff it sounds like we had a similar fall to yours. Indian Summer followed by a sharp freeze and trees held their leaves all winter. We however are not seeing any significant dieback in ash (that isn’t related to the western ash bark beetle anyway). Good luck



    Jim Donnelly

    Integrated Pest Management Coordinator

    Parks Operations

    City of Grande Prairie

    Tel:  780-513-5226

    Fax: 780-532-7588

    Cell: 780-814-3763 

    jdonnelly at cityofgp.com   



    From: canufnet-bounces at list.web.net [mailto:canufnet-bounces at list.web.net] On Behalf Of Boone, Jeff (IS - Parks)
    Sent: June 28, 2010 12:53 PM
    To: 'canufnet at list.web.net'
    Subject: [CANUFNET] green ash decline



    In Saskatoon, many of our green ash are struggling this year.  We are seeing many trees with portions of the mid and upper crown dying and often the lower crown is struggling to leaf out.  In some cases the trees have not leafed out at all.  The damage is widespread throughout the city.  The trees are of mixed age but many are well established.  I’m wondering if other prairie cities are seeing green ash fail to leaf out with significant dieback in the crown.  



    We suspect the cause is abiotic.  Not sure if this is part of the story but we had very unusual Fall weather.  We had an early snow fall in October, exceptionally warm weather in November and then a very sudden drop in December with no snow cover.  We also had two weeks of warm weather in January.  



    Any suggestions are appreciated.



    Thanks



    Jeff W. Boone

    Entomologist B.Sc. M.Sc 

    (306) 975 3466

    (306) 220 5368 (cell)

    1101 Ave P N

    Saskatoon SK

    S7K 0J5






  -- 
  Jack Sloggett
  jack.sloggett at gmail.com
  (905) 465-1859 (office)
  (905) 866-4103 (cell)
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