North American Fruit Explorers mailing list at ibiblio

[Lucky Pittman <lucky.pittman@murraystate.edu>]

John,
Somebody on the list - Donna Hudson, maybe?,  had suggested a seedling 
(crab?) apple rootstock - M.micromalus or M.hupahensis, maybe? That was not 
favored by voles - don't know if one could make the claim that it's totally 
vole-resistant.
But if that's the case, then you might want to consider searching out a 
source for seedlings or clonally-propagated stocks to graft onto.  Yes, 
you'd be going back to square one, but if the voles won't eat them, then 
you'd have a fighting chance, since you've fenced the goats away .

Lucky Pittman
USDA Cold Zone 6
AHS Heat Zone 7
Hopkinsville, KY