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Subject: Re: [apple-crop] Looking for comments on fire blight management
Re: The bacteria (in the hypanthium) need to thrive in the nectary in order to
reach numbers sufficient to switch on their virulence. Once this is
accomp
18, 2015 1:17 PM
To: Apple-crop discussion list
Subject: Re: [apple-crop] Looking for comments on fire blight management
Re: The bacteria (in the hypanthium) need to thrive in the nectary in order to
reach numbers sufficient to switch on their virulence. Once this is
accomplished you have an
-crop-boun...@virtualorchard.net
[mailto:apple-crop-boun...@virtualorchard.net] On Behalf Of Weinzierl, Richard A
Sent: Friday, August 14, 2015 2:27 PM
To: Apple-crop discussion list
Subject: Re: [apple-crop] Looking for comments on fire blight management
U of I Kane County Extension Office, 535
comments on fire blight management
Hi Tim! nice to read you!
I think there are more sources of fire blight bacteria in the general
environment in the northeastern USA due to your woodlots and forests (with
feral apples and native hosts such as Hawthorne) as contrasted with the
treeless
Hi Tim! nice to read you!
I think there are more sources of fire blight bacteria in the general
environment in the northeastern USA due to your woodlots and forests (with
feral apples and native hosts such as Hawthorne) as contrasted with the
treeless conditions around many eastern Washington
Hi Dan!
> The best we have so far is that it was so dry during bloom in most areas
> that even though epiphytic populations of bacteria were tremendous, they
> never got washed into flowers to cause infection. Another possibility is that
> the extremely dry weather suppressed bacterial growth,
Hi!
Maine had two bouts of fire blight weather during bloom, one at very
beginning and second at very end.
We rarely observe symptoms in relation to the first recorded infection event
during bloom. Actually, while validating the RIMpro-erwinia model
(http://www.actahort.org/books/896/896
-crop-boun...@virtualorchard.net] On Behalf Of Daniel Cooley
Sent: Wednesday, August 12, 2015 11:22 AM
To: Apple-crop discussion list
Subject: Re: [apple-crop] Looking for comments on fire blight management
A group of us wrote the article attached for the UMass/Rutgers publication
Fruit Note
There seemed to be a lot of late, tail-end bloom(rat-tail) bloom this year
especially on Paulared. Every tree had 3-4 clusters on borse shoots into
mid-June. We did use one strep spray on several varieties with this
bloom. Also it is probably not a good idea to neglect cutting root suckers
that
Maine had two bouts of fire blight weather during bloom, one at very
beginning and second at very end. I suspect that the rapid shift to hot
days just before and leading into bloom (after slow cool period from bud
break to pink) may have shocked the trees and resulted in more straggled
bloom
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