Re: [Apple-Crop] Ideas on FB

[lee elliott]

Its time to do leaf analysis again but I have seen a lot less FB in the last 
couple of years, 

On Mon, 5/22/17, Jon Clements <jmcext...@gmail.com> wrote:

 Subject: Re: [Apple-Crop] Ideas on FB
 To: "Apple-Crop discussion list" <apple-crop@virtualorchard.com>
 Date: Monday, May 22, 2017, 10:58 AM
 
 And have you seen an
 uptick in copper levels in leaf analysis when you apply to
 soil?
 Jon
 On Sun, May 21, 2017
 at 10:45 PM, lee elliott <pippm...@yahoo.com>
 wrote:
 For
 the first year ever I havent seen any FB here is western
 Illinois, could it be th 86 degree days we had burned it
 out, I believe FB burns out after a few hot days, some dont
 believe this but experience has taught me it is true, Shoot
 bligt and root sucker blight has allways been a problem, I
 am sceptical that these antobiotic sprays work at all, only
 good for the blooms and chemical dealers, Copper does work
 well on young hursery and non-bearing trees that get shoot
 blight where your not woried about fruit finish, My person
 opiniion, low soil levels of copper, (do a leaf anayisis)
 make the tree stressed and contribute to FB. Just my 2 cents
 worth, Lee Elliott, Upstart Nursery, Winchester Illinois
 
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 Jon Clements
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 aka 'Mr Liberty'
 aka 'Mr Honeycrisp'
 IM mrhoneycrisp
 413.478.7219
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Re: [Apple-Crop] Ideas on FB

[Daniel Cooley]

My guess is that it’s not so much the heat as the humidity, Kevin. I think when 
you get as dry as it gets in Riverside on a hot day, it may indeed kill off the 
epiphytic bacteria, and make further transmission difficult. Today and tomorrow 
it looks like your dewpoint is 47 to 52 F (8 to 11 Vincent), and RH dips to 
nearly 20%!  Perhaps the heat/water stress also stops progress in infected 
tress. 

Dan

> On May 22, 2017, at 12:36 PM, Vincent Philion  
> wrote:
> 
> Hi!
> 
> it would be interesting to define “cool” in the southern California context. 
> ;-)
> 
> Temperature in the mid-90 (35 ℃ for the rest of the planet) (or more) clearly 
> isn’t favorable for blight. Flowers age faster at that temperature, while the 
> bacteria is slowed down.
> 
> Plus, if the trees are under water stress the bacteria can’t progress 
> normally.
> 
> Your “cool” is our “warm” and that’s why we struggle with FB, but also scab 
> and CM.
> 
> Vincent
> 
> 
> 
>> Le 22 mai 2017 à 00:29, kuffelcr...@kuffelcreek.com a écrit :
>> 
>> A long, cool spring here in Southern California allowed quite a few FB
>> strikes, three days in the low to mid-90's stopped it in its tracks. 
>> Formerly limp shoots with sticky ooze and now crispy and dry, and pruned
>> stumps do not get re-infection.  That's all I'll see of it until next
>> spring, weeks of 100+ weather and 5% humidity sees to that.  Unfortunately
>> it doesn't slow down the CM a bit, which is my next nemesis on the
>> calendar.
>> 
>> Kevin Hauser
>> Kuffel Creek Apple Nursery
>> Riverside, California
>> Nakifuma, Uganda
>> 
>> On Mon, 22 May 2017 02:45:06 + (UTC), lee elliott 
>> wrote:
>>> For the first year ever I havent seen any FB here is western Illinois,
>>> could it be th 86 degree days we had burned it out, I believe FB burns
>> out
>>> after a few hot days, some dont believe this but experience has taught
>> me
>>> it is true, Shoot bligt and root sucker blight has allways been a
>> problem,
>>> I am sceptical that these antobiotic sprays work at all, only good for
>> the
>>> blooms and chemical dealers, Copper does work well on young hursery and
>>> non-bearing trees that get shoot blight where your not woried about
>> fruit
>>> finish, My person opiniion, low soil levels of copper, (do a leaf
>> anayisis)
>>> make the tree stressed and contribute to FB. Just my 2 cents worth, Lee
>>> Elliott, Upstart Nursery, Winchester Illinois
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Re: [Apple-Crop] Ideas on FB

[Vincent Philion]

Strep works very well for blossom blight, until abuse brings it down 
(resistance). Sticking to bloom sprays and making sure it’s applied only when 
it’s needed is key. 

> sceptical that these antobiotic sprays work at all, only good for the blooms 
> and chemical dealers,


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Re: [Apple-Crop] Ideas on FB

[Vincent Philion]

Hi!

it would be interesting to define “cool” in the southern California context. ;-)

Temperature in the mid-90 (35 ℃ for the rest of the planet) (or more) clearly 
isn’t favorable for blight. Flowers age faster at that temperature, while the 
bacteria is slowed down.

Plus, if the trees are under water stress the bacteria can’t progress normally.

Your “cool” is our “warm” and that’s why we struggle with FB, but also scab and 
CM.

Vincent
 


> Le 22 mai 2017 à 00:29, kuffelcr...@kuffelcreek.com a écrit :
> 
> A long, cool spring here in Southern California allowed quite a few FB
> strikes, three days in the low to mid-90's stopped it in its tracks. 
> Formerly limp shoots with sticky ooze and now crispy and dry, and pruned
> stumps do not get re-infection.  That's all I'll see of it until next
> spring, weeks of 100+ weather and 5% humidity sees to that.  Unfortunately
> it doesn't slow down the CM a bit, which is my next nemesis on the
> calendar.
> 
> Kevin Hauser
> Kuffel Creek Apple Nursery
> Riverside, California
> Nakifuma, Uganda
> 
> On Mon, 22 May 2017 02:45:06 + (UTC), lee elliott 
> wrote:
>> For the first year ever I havent seen any FB here is western Illinois,
>> could it be th 86 degree days we had burned it out, I believe FB burns
> out
>> after a few hot days, some dont believe this but experience has taught
> me
>> it is true, Shoot bligt and root sucker blight has allways been a
> problem,
>> I am sceptical that these antobiotic sprays work at all, only good for
> the
>> blooms and chemical dealers, Copper does work well on young hursery and
>> non-bearing trees that get shoot blight where your not woried about
> fruit
>> finish, My person opiniion, low soil levels of copper, (do a leaf
> anayisis)
>> make the tree stressed and contribute to FB. Just my 2 cents worth, Lee
>> Elliott, Upstart Nursery, Winchester Illinois
>> ___
>> apple-crop mailing list
>> apple-crop@virtualorchard.com
>> http://virtualorchard.com/mailman/listinfo/apple-crop
> ___
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