I’m surprised that your graphic (and I think I heard the same from Marc
Trapman) suggests that in Europe they recommend using LLS only on wet leaves
whereas the old info from Burrell suggested that it should NOT be applied to
wet leaves. Any explanation?
> On Apr 7, 2016, at 5:31 PM, Vincent
Hi!
I heard at the Hudson Valley RIMpro meeting last
month that bicarbonate is used in Europe during rainfall
That would seem to necessitate repeated applications during an infections
period. Does it have no after-infection value?
In replicated tests over the years, we saw value in using
Hi!
Normal only in the context of Organic Production only! Part of the
phytotoxicity is avoided by using a much reduced rate in summer.
I meant to say it’s not a rescue treatment for anyone.
it’s either ’normal’ (organic) or completely forgotten (IPM).
I would also say that LLS is quickly
I was surprised by Vincent’s comment that liquid lime sulfur is a “normal”
choice for post-infection in his area. My recollection
is that its use quickly went out of favor when ferbam and captan became
available, mostly because of reduced photosynthetic
ability of LLS-damaged leaves. Maybe
Art Burrell, working in the Champlain Valley of NY where spring temperatures
are often cool, would agree with you. The sentences after the section that I
quoted in the previous post says:
“We have a period up to 60 or 70 hours, after the start of theinfection
period, during which a heavy
If you worry about Captan phytotoxicity, then you should also worry about LLS
being phytotoxic under the same conditions. Liquid lime sulfur is a ’normal’
(ie not emergency) choice for post infection (kickback). However, I wouldn’t
trust it 96 hours after beginning of rain, unless the
Sorry if this is a duplication: I tried attaching Art Burrell’s discussion of
sulfur sprays with the following message, but I think that made the message
size too large for this list-serve.
I can only reprint what Dr. Art Burrell said in 1945 at the 90th Annual Meeting
of the New York State
Does anyone have enough experience with liquid lime sulfur to comment
on it as an emergency
choice for application before rains have stopped during the current long
infection period? It is listed as
having 72-96 hours back-action in the New England Tree Fruits Management Guide.
