[CANUFNET] green ash decline

[Jim Donnelly]

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 <mailto: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

 

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