On Mon, 02 Apr 2007 23:31:25 GMT, "Jeffrey L. Kline"
wrote:

Here a website that talks about the use of rooting hormones with grafting.
Hope it helps. I use the powder form, but I think its about the same either
way.
http://www.rooting-hormones.com/stenting.htm
"Cummins (1997) states that the 'success of a graft union depends on the
establishment of a callus bridge between the cut surfaces of scion and stock
and the subsequent establishment of a functioning vascular cylinder
connecting scion and stock. Initial callus formation appears to develop
about equally on the cut surfaces of both partners, arising not from the
cambial layers but from parenchyma cells, mostly in the wood just inside the
cambium. Soon after scion and stock calluses have merged, callus cells just
below the cambial cells of the scion begin to divide in the same plane as
the cambium. Waves of cell division proceed from the top down, suggesting
that a regulatory stimulus moves to the cut surface from the growing-shoot
tip. Callus parenchyma cells inside the new cambium cylinder
re-differentiate into functioning xylem cells. The new cambium begins
producing phloem cells.' Upon application of liquid rooting hormones to the
graft site, of malus trials, survival was greater for the treated grafts
than for those not treated. He used the equivalent of a fresh solution of
Rhizopon AA Water Soluble Tablets at 40 tablets per liter (2000 ppm active
ingredients). Cummins says it is probable that the rooting hormones increase
both the formation of a callus and the rate at which the new cambium
cylinder is differentiated through the callus parenchyma cells. He suggests
that dry powder rooting hormone should also be tried at the graft union."



Best Regards,

Jeff

Southeast Michigan, Zone 5 (with snow in the forecast for later this week!)

I have book marked that site for future reference. Thanks,

Karen