[NAFEX] Rootstock / Dormancy

Del Stubbs northernlights2n at yahoo.com
Thu Oct 28 23:06:20 EDT 2004

This brings up a related subject: What are the plus' and minus' of early
dormancy in a cold climate?
At first I would presume early dormancy is a plus - so trees get ready for
winter in plenty of time, but in  a short summer ( were about 95 days
frost free here ) perhaps one needs the opposite in a rootstock to induce
thorough ripening?
Del, N. Minnesota

> With some Bud.118 and MM111 grafts (and ungrafted rootstocks)
> side-by-side, 
> I'd like to report that Bud.118 goes dormant at least a week ahead of
> MM111. 
>   Its leaves are down and MM111 hasn't even turned color yet. 
> Above-graft 
> growth on Bud.118 is still green, mostly!  Some of the topwork on MM111
> is 
> showing color, with green MM111 leaves below the grafts.  Interesting!
> I wish I had enough grafts to say "XYZ cultivar goes dormant 1 week
> sooner 
> on Bud.118 than MM111", but that will have to wait for the McArthur
> grant!
> Tanis Cuff, s.WI, z4 to 5, decent soil but droughty (except this year!)
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Del Stubbs  http://www.pinewoodforge.com   zone 3   N. MN

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