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 wrote:
Subject: Re: [Apple-Crop] Ideas on FB
To: "Apple-Crop discussion list"
Date: Monday, May 22, 2017, 10:58
For the record, "cool" spring to us is in the low 70's, as it is not
unusual to have some 100F+ days in April. This year we even got a rain and
decent mountain snow after Easter.
Our worst FB weather is cool, foggy mornings burning off to hazy days in
the 80's. The hot days we got last week with
Hi Dan,
> My guess is that it’s not so much the heat as the humidity,
Optimal for Erwinia is 28°C, but drops off quickly for temperatures above that.
But I think you are right = after bloom dry is key:
Some years, we’re lucky and we get that; A nice dry spell in June conveniently
stopped our b
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 Vince
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,
__
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
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 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
>
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 o
