Rd,

Don't want to alarm you but you should start spraying way before now.
Do you know what black rot looks like? It's red spots on the leaves
with a thin black outline around them. I'm surprised that unsprayed Cab
Sav would not have it already. For Black rot and powdery mildew I would
recommend Nova. Paul's post was very informative and was correct. The
active ingredient in Nova is Mycobutinil ( sp? ) which is also sold as
"Eagle" at Lesco. Get it and spray at 1 level teaspoon per gallon of
water. Do it as soon as you can. Also Captan is good for downey mildew
protection and you should mix in some Captan also for DM. Like Paul
said add some Sevin for the beetles but unless the infestation is
extremely bad, they won't hurt you as much as PM,DM, and BR. After you
spray the Nova/Captan solution spray it again in 10 days. That should
get you going in the right direction.

Bob



RD wrote:
> I planted 10 Cabernet Sauvignon vines this year (in SE Pennsylvania).
> They've been growing very well until the Japenese beatles discovered
> them in the last week or so. I also need to start spraying for powdery
> mildew but I'm not sure which product is best. Sulpher? Is
> lime-sulpher typically used? What about Mancozeb?
>
> Any help is appreciated.
>
> Thanks,
> RD