>> Whip and Tongue Grafting
Application:
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Advantages:Compared to a splice graft, the whip and tongue is stronger, because the interlocking tongues are held under compression by the natural springiness (elasticity) of the wood of both stock and scion. This naturally generates the pressure needed for graft union formation, which is discussed in the section on Requirements for Successful Grafting and Budding. The additional length of the vascular cambium exposed along the cut surfaces of a whip & tongue graft (original diagonal cut plus tongue cut) is much greater than the length of cambium exposed by only the diagonal cut without the tongue, in the case of a splice graft. This results in greater cambial contact between stock and scion of a whip & tongue than of a splice graft. |
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Apple nurse root graft (by whip
& tongue) from The Nursery Book, by LH Bailey, 1913
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Natural
pressure is generated by the interlocking tongues of the whip & tongue
graft (right), compared to the splice graft, which is essentially the same
graft without the interlocking "tongues".
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How to Whip & Tongue Graft: | |
The first cut is a long sloping
diagonal as much as one to two inches long
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Copyright LH Bailey Hortorium, 1976 |
The second cut begins about
1/3 of the way down from the top of the first cut. It begins vertically,
then gradually becomes nearly parallel to the first cut surface, to create
the "tongue".
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Identical (complementary)cuts
are made in both stock and scion.
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Preferably the scion should
be the same diameter as the stock, but if it is smaller, it is important
the the scion be placed over to one side of the stock, rather than centered,
so that the vascular cambia like up.
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Stock and scion should fit together
without the overlap shown here, which indicates that the second (tongue)
cut was to long.
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Additional Information:
Source:
VanPlant (a nursery in New Zealand) |
Source: Hort
400 Plant Propagation Web site autotutorial |
Source:
University of Minnesota Extension Service, College of Agricultural,
Food, and Environmental Sciences |