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On Dec 27, 2006, at 11:40 AM, Jim Fruth wrote:

> Bob,
>     I'm sorry that I forgot to mention anything about disease:  In  
> the ten
> years that I've been growing my Pequot Black Raspberry, I have  
> observed zero
> diseases.  I have had a bout with cane borer though and had to  
> figure out
> how to get rid of them.
>     Since I'm on the subject of Rubus disease, I should add that,  
> of the
> several varieties of blackberries I grow, the only one that is  
> susceptable
> to rust has been a wild type.  I have seen rust on a few leaves of  
> Fort Kent
> King.  Of red raspberries, only mild fire-blight on K-81-6 and  
> disease fre
> on Latham, Boyne, Encore, Nova, Dinkum, Polana, Autumn Bliss.

I have wild blackberries that are thoroughly infested with yellow  
rust.  Almost no berries, and scrawny growth.  From tim eto time I  
try to get rid of them, but they are a very persistant weed, even  
when when infected, and they also grow in the neighbors' yards.

I have a domestic red raspberry (fall red) that has been disease free  
for 9 years now.  Nothing worse than a bout of cane borer.  I have a  
domestic blackberry (a gift from a fellow NAFEXer, but I forget the  
cultivar) that has made it through two years without showing signs of  
rust, although I still consider it a trial.  It did produce some  
tasty berries this year.  It must be at least somewhat resistant,  
since obviously the disease pressure is high.  (There are rust  
infected wild plants growing within feet of this one.)

Ginda

eastern Mass., zone 6