[Apple-Crop] More on FB

[lee elliott]

I have been adding copper (Kocide) to my glysofate tank when spraying weeds in 
an effort to get more copper into the soil, Kocide is cheap, water soluable, 
Every time I have done leaf anayisis copper is way deficient in the leaf, I 
think this defieciancy makes the tree more suceptable to FB, do the experts 
think this may work? It cant hurt anything, This is midwest soil, is copper 
short in other area too?, I have learned that removing any stress from the tree 
will get you success, Lee Elliott Upstart Nursery, Winchester, Illinois
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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]

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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>> apple-crop mailing list
>> apple-crop@virtualorchard.com
>> http://virtualorchard.com/mailman/listinfo/apple-crop
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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] More on FB

[Vincent Philion]

Hi!

I have no idea about the effect of copper content in soil on FB management. 
That’s a new one for me. I tried to look it up, but couldn’t find anything. 

For FB, removing “any” stress is not a silver bullet though. As mentioned in 
previous posts, some water stress can save your trees when FB strikes.

Vincent

> Le 22 mai 2017 à 08:37, lee elliott  a écrit :
> 
> I have been adding copper (Kocide) to my glysofate tank when spraying weeds 
> in an effort to get more copper into the soil, Kocide is cheap, water 
> soluable, Every time I have done leaf anayisis copper is way deficient in the 
> leaf, I think this defieciancy makes the tree more suceptable to FB, do the 
> experts think this may work? It cant hurt anything, This is midwest soil, is 
> copper short in other area too?, I have learned that removing any stress from 
> the tree will get you success, Lee Elliott Upstart Nursery, Winchester, 
> Illinois
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