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[list@ginda.us]

How do trees catch viruses, anyway?  I know they can get them from a 
graft, but there must be a natural way viruses spread, or we wouldn't 
have so many of them.

I wouldn't want a rootstock that's extremely susceptible to viruses in 
my backyard.  It might be okay for a commercial grower who plans to 
take out many of his trees from time to time to keep up with the latest 
fad, and so doesn't mind that his trees are short-lived.  But I don't 
have many trees, and can't give them idea conditions, so they grow 
rather slowly.  Once I get something I like, I prefer if it doesn't 
just drop dead unexpectedly because it picked up some bug.

Ginda Fisher
eastern MA, zone 6

On Saturday, January 11, 2003, at 07:31  AM, Dr. Ethan Natelson wrote:

> Dear Mike,
>
>      In the lead article of the most recent edition of Compact Fruit 
> Tree,
> the publication of the International Dwarf Fruit Tree Association, the
> authors indicate the advantages of G-16 over M 9 are better fireblight
> resistance and slightly better yield.  The downside is the extreme
> sensitivity to latent viruses in the grafted scion which can abruptly 
> kill
> the tree.  I have had that happen here in Houston.  Thus, grafted wood 
> must
> be virus free.  They also claim that it is not yet clear if G-16 is 
> cold hardy.
>
>                                   Regards, Ethan
>
> At 12:15 AM 1/11/03 -0500, you wrote:
> > I've been poring over catalogs trying to figure out this year's order 
> > and
> > just when I thought I would order trees on Bud 9 my friend suggested 
> > that
> > Geneva 16 might be a superior rootstock.  Any thoughts on this?
> >
> > Mike Levine
> > Ann Arbor, MI
> > zone 5b
> >
> >
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