Grapes -- Varieties -- United States; Viticulture -- United States
[Illustration: FIG. 10. Inserting the cion.]
[Illustration: FIG. 11. The completed graft.]
R. D. Anthony describes another method as follows:[2] "A method which
a Pennsylvania grower of Viniferas has found very satisfactory is to
root the Vinifera cuttings, and grow them one year on their own roots;
then the vine which is to be used as a stock is planted in the
vineyard and the rooted cutting planted beside it so that the shoots
from the two may be brought in contact with each other. In June when
the plants are in full growth, two vigorous shoots (one from each
vine) are brought together and a cut two or three inches long made in
each parallel to the length of the cane removing from one-third to
one-half of the thickness of the shoot. These flat surfaces exposed
by the cuts are then brought into contact with the cambium tissues
touching and are tied in place. The tops are checked somewhat by
breaking off some of the growth. The following spring the Vinifera
roots are cut off below the graft and the top of the stock above the
graft is removed."
In the subsequent care of these young vines, the grower must take time
by the forelock and tie the grafts to suitable stakes; otherwise they
are liable to be broken off at the union by wind or careless workmen.
Grafted vineyards must have extra good care in all cultural
operations, and even with the best of care from 5 to 50 per cent of
the grafts will fail or grow so poorly as to make regrafting
necessary, this being the most unfavorable circumstance of field
grafting. Regrafting is done one joint lower than the first operation
to avoid dead wood; this brings the union below the surface of the
ground, and the vineyardist must expect many cion roots to try his
patience.
_Vineyard grafting on the Pacific slope._
Vineyard grafting, according to Bioletti,[3] was formerly the
commonest method of starting resistant vineyards in California. After
stating that it is best whenever possible to plant good cuttings
rather than roots, and that the grafting should usually be done the
year after planting, Bioletti gives the following directions for
grafting:[4]
"Wherever possible the vines should be grafted at or above the surface
of the ground. In many cases, however, it will be necessary to go
below the surface to find a smooth, suitable part of the stock where
grafting is possible.
Public-domain text, read in full here on John Shaqi.
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