Skip to Content.
Sympa Menu

nafex - [NAFEX] Bud 9 and brittle graft unions

nafex@lists.ibiblio.org

Subject: North American Fruit Explorers mailing list at ibiblio

List archive

Chronological Thread  
  • From: "Ed Forest" <edforest55@hotmail.com>
  • To: nafex@lists.ibiblio.org
  • Subject: [NAFEX] Bud 9 and brittle graft unions
  • Date: Sat, 15 Mar 2003 13:00:31 +0000


I put a lot of faith in "them that's doin'" such as Mr Townsend, an experienced orchardist, who says that there is a problem with Bud 9 and brittleness but the following questions remain:

Does B9 have more of a problem than other dwarfing rootstocks in its class? (Reports are that it B9 has the same staking requirements as M9) Ed Fackler, I noticed you didn't include B9 in your very much appreciated lineup of rootstocks with their corresponding susceptibility to blow out. Did you forget or didn't you include B9 in the experiment?

Does this problem continue for the life of the tree or, is one in the clear after five years or so. (This is what David Bedford said of HC on M26, that after five years or so the problems of union breakage have diminished.)

How windy does it have to get to create this problem (I have a four year old unstaked Honeycrisp on B9/111 interstem in a moderately windy site, one that caused trees on M26 to lean considerably) and so far have not had a problem. I'm thinking that the average homegrower in the city is not going to have the problems of the average orchard grower who typically plants in open hilltops.

Following reports that Honeycrisp (HC) had a problem with union brittleness on M26 and Mark I called the a couple people to determine if there was also a problem with B9, including David Bedford of the U of MN, and who else, those in charge of the NC 140 trials on B9, I think in MI, (John Cline or Perry) and was told that there was so far no evidence of blow out problems on B9 with Honeycrisp or with other cultivars, but, as far as I know they had not specifically tested for blow out.

Perhaps Mr Townsend could answer some of the aforementioned questions


Kevin Bradley
www.edibleforestnursery.com




_________________________________________________________________
MSN 8 helps eliminate e-mail viruses. Get 2 months FREE*. http://join.msn.com/?page=features/virus




Archive powered by MHonArc 2.6.24.

Top of Page