The Bud-Graft Method of Propagating Vinifera Grape Varieties on Rootstocks. Page: 2
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2 LEAFLET 173, U. S. DEPARTMENT OF AGRICULTURE
The bud-grafting operation may be started during early August
in the cooler coastal sections and about mid-August in the interior
valleys in California and can be continued successfully until late
September or later in the more favorable seasons. While the extreme
time limits during which the bud grafting can be successfully made
have not been determined, these limits will vary with seasonal and
In the actual bud-grafting operation (figs. 1 and 2), a smooth place
is selected on the stock slightly above the soil level. The scion bud,
FIGURE 1.-Summer bud grafting: A, Cut made in stock for the bud; B, bud
placed in position on stock; C, bud wrapped in place.
located at this place, is not likely to develop roots. An oblique
downward cut is made on the stock % to 1 inch in length (fig. 1, A)
and a shorter cut is made into the stock at an acute angle meeting the
first cut at its basal end. The chip thus made is removed from the
rootstock. By similar cuts on the vinifera budstick, making the
second oblique cut just below the base of the scion bud, a chip of wood
including the bud is obtained. This scion bud chip should be similar
in size to the chip removed from the rootstock. The chip bud thus
obtained is fitted tightly into the rootstock (fig. 1, B) with as much
of the cambium layers of the bud and the stock coinciding as is possible.
The bud chip is held firmly in place by wrapping with a suitable
tying material (fig. 1, C, and 2, C). Thin rubber grafting tape
one-eighth inch wide can be obtained and is commonly used for this
purpose. The budded portion of the stock is then covered with 6 to
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Snyder, Elmer & Harmon, Frank Nelson, 1895-. The Bud-Graft Method of Propagating Vinifera Grape Varieties on Rootstocks., book, 1939; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc5984/m1/3/: accessed July 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.