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nafex - Re: [NAFEX] Mark and Geneva Rootstock

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  • From: "Mark Angermayer" <hangermayer@isp.com>
  • To: "North American Fruit Explorers" <nafex@lists.ibiblio.org>
  • Subject: Re: [NAFEX] Mark and Geneva Rootstock
  • Date: Fri, 5 Dec 2008 21:03:19 -0600

Don't know much about apple rootstocks, but there was an interesting
discussion very recently on apple crop regarding Mark rootstock. One grower
really liked it, but evidently some folks had breakage problems and
extensive swelling is common (I believe at the graft union).

Mark
KS
----- Original Message -----
From: "sherwin dubren" <>
To: <nafex@lists.ibiblio.org>
Sent: Friday, December 05, 2008 12:49 AM
Subject: [NAFEX] Mark and Geneva Rootstock


> I have four trees in my yard obtained from Greenmantle Nursery
> as benchgrafts in the late 90's. All are doing great here in
> the Midwest,where my soil is black dirt atop clay. Mark is a
> very prolific rootstock, about the size of Bud-9, but I think
> it is superior to that rootstock. It probably requires less
> staking than Bud-9. I have read reports that it is more resistant
> to disease and pssts in a study comparing it to M-9. There is
> only one grower I know of selling Mark and that is Treco.
> Unfortunately, Treco sold their entire supply to Mexican growers.
> Greenmantle cannot make me a tree on Mark because of this. By
> the way, Greenmantle is run by Ram Fishman, a former President
> of Nafex. He said he was going to try and grow some Mark
> rootstocks himself, and that Mark got a bum rap years ago.
> There was a report that trees on Mark rootstock were dying
> after 10 years. Turns out, these were being grown in sand on
> irrigation lines. Nurseries stopped growing Mark and so it no
> longer was heavily used. Here in Illinois, my Mark's are thriving
> after 15 years.
>
> I have also looked at the new Geneva rootstocks like G-11. This
> rootstock is still too new and the only supplier, Cummings is all
> sold out. Seems like there is too much of a lag with these
> suppliers. Geneva rootstocks are supposedly superior in resistance
> to fireblight. Fireblight is not a big problem in my area, but
> it could introduce itself and its a nasty disease. What is mostly
> available for the size trees I want is Bud-9. This rootstock is
> only somewhat resistant to fireblight. For some reason, I have
> had trouble with whip and tongue grafts on Bud 9. Ram told me to
> try Bark grafts as more reliable, which I may do.
>
> Sherwin Dubren
>
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