Hi Ron,
It would be a bit helpful to know where you are located, but not critical
to this
issue. The first line of defense would be a spraying of dormant oil. This
will smother
the eggs of the insects before they emerge. Pick a dry spell and reasonably
warm
days above freezing, to apply. Add a 'sticker' for retention. Too early and
you may
lose some effect from the washing away of the oil, and too late might miss
the
emergence of the insects from their eggs.
I would follow up with spraying with fungicide in the Spring. You can
add a pesticide to this after the petals fall from the blossoms, to avoid
killing any friendly
pollinator insects like bees. After this, follow up with periodic spraying
every few
weeks, to harvest. I would recommend a general orchard spray for this later
spraying.
If you find you have some really nasty bugs or fungus problems, you may have
to change the sprays to something stronger and more specific. This sounds
kind of nebulous, but you need to figure out what kinds of bugs and fungus
are attacking your trees. You can check with your local Extension Services
for assistance, if normal measures don't work.
Be sure and wear a breather mask, cover all exposed skin, goggles over the
eyes, and wash up good afterwards, when using the chemicals.

Sherwin D.

Ron H wrote:

OK, It's a moderately nice January day and I finished pruning the apple
trees. Looks like it's going to be a great year for apples but I need to
know the what, when, where, and how much of spraying apples trees to fend
off both predator and disease!

Any advice, references, etc???

Ron H.
West Central Wisconsin