North American Fruit Explorers mailing list at ibiblio

[Scott Smith <scott@cs.jhu.edu>]

Summer sprays cannot combine oil and sulphur (or lime-sulphur) since  
the combination is phytotoxic.  But there are no leaves in the winter  
so they can be combined then.

I am curious about how people time their dormant sprays.  I do only  
one spray and feel like it is best to spray as late as possible, just  
before the leaves come, so the bugs have started to wake up a bit and  
will be more vulnerable.  I think I read something to this effect at  
some point and it sounded convincing.  I think this stage is called  
"bud swell", before "green tip".

Scott


> >I need to prune and to spray with dormant oil, and I'd also thought  
> to
> >do a dormant spray of lime sulfur (apparently not within two weeks -
> >either side - of the oil?). But if I want to do all of these as  
> late as
> >possible, is that going to work?