[NAFEX] brown tor resistance, was: Plum Curculio Resistant Cultivars
dwoodard at becon.org
Thu Nov 15 15:59:14 EST 2007
According to my reading, movement of minerals (and I presume sugars and
other items) across a graft union tends to be imperfect. The
concentration in the sap above the union (for upward movement of
minerals) is less than below. I don't recall reading anything about how
the degree of obstruction might vary with for example, genetic
relatedness of rootstock and scion, but I guess that there would be a
There has been some work on own-rooted peach trees going back 20-30
years or so. I don't know the methods used but there is a wide range of
possiblities from cuttings treated with rooting hormones down to tissue
St. catharines, Ontario, Canada
Mark & Helen Angermayer wrote:
> Why would switching to "own rooted trees for new plantings" increase uptake
> of available calcium? Also, how is a peach tree grown on it's own roots?
> I've never seen peach trees advertised other than on commercial rootstocks
> (Bailey, Halford, Lovell). Do you mean burying the peach tree below graft?
> How successful is this in causing the peach tree to root out?
> ----- Original Message -----
> From: "Anton Callaway" <>
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