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nafex - [NAFEX] Rootstocks for Asian persimmon; misc. issues.

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  • From: Steven Covacci <filtertitle@aol.com>
  • To: nafex@lists.ibiblio.org
  • Subject: [NAFEX] Rootstocks for Asian persimmon; misc. issues.
  • Date: Thu, 10 Nov 2011 11:39:12 -0500 (EST)



Group:
1. Is the Japanese persimmon cv. 'Hokkaido' dwarf for all who grow it on D.
virginiana; I think it was Cliff who told me that it is only dwarfed on it's
own species: D. kaki rootstock.
2. Is 'Hokkaido' an astringent-'til-ripe variety, or non-astringent? If
astringent, I suppose I can put it on D. lotus without fear of long-term
future graft-incompatibility.
3. Why would grafting a kaki persimmon upon native D. virginiana confer any
advantage of improved winter-hardiness? I suspect this is an outright myth,
UNLESS being on D. virginiana will, to an extent, influence the D. kaki scion
to leaf-out a little earlier, as the rootstock (D. virginiana) reserves
water-flow until a little later in the spring?
Is this the case? If not, then I suspect the only legitimate two reasons for
grafting Japanese persimmon (preferably 90-c) American persimmon:
A. Seed and/or seedlings of American persimmon are more readily available, in
many cases;
B. Since non-astringent Kaki persimmons/Japanese persimmons will,
eventually, graft-reject upon D. lotus - so, without D. kaki seedlings
on-hand or D. lotus being a viable option for non-astringent cultivars (see
reason No.1), then D. virginiana is the only available option.
I'm looking forward to hearing input on this one - maybe somehow D.
virginiana (which produces a bigger tree then either D. lotus or D. kaki
roostock, and suckers readily) does confer some degree of winter-hardiness to
the top-grafted Asian persimmon scion?
Thanks,
Steve; NJ 6b/7a




  • [NAFEX] Rootstocks for Asian persimmon; misc. issues., Steven Covacci, 11/10/2011

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