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Jim,
   I believe it is the late leaf rust in red raspberries and the orange rust 
in blackberries.My impression was that it goes beyond just rust in berries. 
Other diseases in and other plant genera. I dont know any specifics. He did 
mention helping some highway dept. out west with dieback in Ealeagnus. A 
broad range of plants and disease were talked about. Everything from wheat to 
oak trees. The soil copper ppms vary depending on the species.
  He gets much of his info for this through the American Phytopathological 
Society.  APS.
  Below is a link.
Mark

http://www.apsnet.org/