The Raisin Industry: A practical treatise on the raisin grapes, their history, culture and curingEisen, Gustavus A.
History
The Raisin Industry: A practical treatise on the raisin grapes, their history, culture and curing
Eisen, Gustavus A.
Raisins; Viticulture -- California
much the growers are opposed to experimenting and improving upon the
methods which have been handed down to them from their forefathers. As
we have shown, the currant vines are all very closely pruned, very much
in the same way as our Muscats. Seldom more than three spurs are allowed
to remain, each one with two or three eyes. Summer pruning or topping
the branches is never practiced on the currant vines, but generally on
the wine grapes. On the contrary the currant branches are carefully
guarded, and in order that they may not break are tied to stakes from
four to five feet high.
_Care of the Vineyard._--After irrigation is over, the vineyards are dug
over. The soil is dug up around the vines and placed on top of the
ground in small heaps, which process is considered beneficial both to
the roots of the vines and to the soil. In April, this soil is all put
back, and the ground leveled. Each vine is staked. By the middle of
April, the vines are in leaf. By the middle of July, the first fruit is
ripe, and by the middle of August the harvest has everywhere begun. The
stakes for the vines are imported at a cost of $15 or $16 per thousand,
and constitute the most expensive item in the construction of a currant
vineyard.
The mildew or oidium, which some fifty years ago spread all over the
world, destroyed many of the vineyards before the sulphuring was
discovered as a sure remedy. Sulphuring the vines is now regularly
practiced in all the vineyards; but there is a popular belief that the
raisins are no longer of the same fine and pure flavor as they used to
be before the advent of the oidium and the sulphur.
_Ringing the Branches._--A process much used in the currant vineyards is
the ringing of the branches. At the time of blossoming, some of the main
branches are cut in such a way that a small ring of bark is separated
from the branch near its base. The sap which ascends in the interior of
the branch, but which returns by the bark, is thus prevented from
returning, and must remain in the branch. The effect is that a large
number of clusters are formed with berries both larger and sweeter than
those not thus treated. But the practice is not without its drawbacks.
In the dry lands of Cephalonia, where it was first introduced, it was
soon discovered that the ringed vines began to fail after two or three
years, and the method had to be modified or abandoned. In Morea, where
the soil is moister and richer, the ringing did not prove as dangerous,
and is yet practiced, though great care is taken that the same branch is
never girdled or ringed in two successive years. Only the strongest
vines are able to resist the exhausting effects of the process; the
weaker ones should never be forced to overproduce.
The exhalations of fig-trees and pomegranate bushes are considered most
beneficial to the currant grape, and the former are found everywhere
among the plantations, especially along roads and ditches.
Public-domain text, read in full here on John Shaqi.
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