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[Caren Kirk <quirky@videotron.ca>]

 Thanks Scott. Excuse my ignorance but what's the difference between 
sulphur and lime sulphur sprays? I have both but what I did yesterday 
was lime sulphur. I do not have any sticking agents, will have to see if 
I can get hold of one.

Can I spray dormant oil now or will I have to wait? Can I mix the 
sulphur with that?

By the way, despite the crazy weather we still have not had bud break up 
here.

Thanks again,

Caren.

On 4/2/2012 8:39 AM, Scott Smith wrote:
> Caren, I would respray that one, maybe waiting a week or so since it did have 
> some effect and you can thus cover a longer period.  It does help to have a 
> disease spray on before a rain since rain will produce new spores which will 
> wake up in a very unwelcome environment.  The standard saying is to use 
> sulphur before a rain and lime-sulphur after; the l/s penetrates the leaf 
> surface a bit and can get any freshly growing fungi.  When you spray sulphur 
> (not lime sulphur) use a sticker, you can keep much of it on through a light 
> rain.  I use nufilm-17 with every sulphur spray I do.
>
> I don't know why it states not to spray sulphur on apricots - maybe some 
> varieties are susceptible.  I was not spraying sulphur on my cots until a few 
> years ago when I heard others were using it, and since then I have laid on 
> the sulphur and not noticed any problems.  I have over a dozen varieties so 
> if there are any susceptible varieties it is not that common.  One guess I 
> had was some apricots are highly prone to brown rot shoot blight and perhaps 
> someone mistakenly thought that was caused by the sulphur.     I did notice a 
> bit of leaf browning on hot days so that could be another potential reason; 
> it was so minor that it was almost not noticeable.  Sulphur is very useful 
> for preventing peach scab on apricots, it is a big problem on Puget Gold and 
> a few other varieties.  So it is probably OK to use.
>
> Scott
>
> On Apr 2, 2012, at 7:55 AM, Caren Kirk wrote:
>
> >   Trying to be efficient I sprayed my fruit trees yesterday morning with
> > lime sulphur at around 11am. By 2pm it ahd started drizzling and then it
> > really rained and then it snowed.
> >
> > How long does sulphur need to stay on the tree to be effective? Will I
> > need to respray everything?
> >
> > Of course today is going to beautiful.
> >
> > Also, I bought some new sulphur and  it said not to use it on apricots.
> > Is this true? It was not mentioned on my last bottle of sulphur.  How
> > then should I protect my apricot from Brown rot present on other prunus
> > in the orchard? Or is apricot considerably less susceptible?
> >
> > Thanks
> >
> > Caren Kirk
> > St. Jerome, QC
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