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
_The Vines and the Vineyard._--In planting, cuttings are generally used,
not because they are most preferred, but because good rooted vines
cannot be obtained. The distance to, and the difficulty of reaching,
this district was formerly such that roots would suffer in transit and
would rapidly dry, while cuttings could be had handy and fresh. The
vines, originally planted eight by eight feet, have been given more
distance of late, some vineyardists planting them eight by twelve feet,
while others prefer twelve by twelve or ten by twelve feet. The
varieties used are the Muscat of Alexandria only. This variety happened
to be the one that was imported first from Riverside, I believe, and it
was afterwards propagated by every one. The variety as grown in El Cajon
is the type of Muscat of Alexandria with oblong berries, large clusters
with loosely hanging berries and large strong stems. The shape of the
vines is erect, with a few center shoots, strong and upright. The vines
commence bearing the second year, and are said to pay expenses of caring
for in the third year, but I think it would be safer to say in the
fourth year.
As regards cultivation and plowing, many plow both ways and harrow and
cultivate crosswise several times until the 1st of June, when, on
account of the dryness of the soil, no more weeds start and no
cultivation of any kind is needed. The large majority of the vineyards
are splendidly kept, not a weed being seen anywhere for miles around.
Winter pruning commences as soon as the leaves fall. In former years
from five to nine spurs were left in pruning and two or three eyes on
each spur, but it has been found profitable and judicious to leave more
spurs, so as to take the sap in the spring, and now from twelve to
fifteen spurs with two or three eyes each are left every winter. Spring
or summer pruning has only been practiced the last two seasons, and
being found very profitable is now adopted by everybody. The vines are
not pinched, but headed well back as soon as the grapes are well set.
This method has in this district the following advantages: It gives
better shade to the bunches on account of the production of a strong
second growth; it causes the bunches to fill better, and, finally, it
leaves more room between the rows of the vines. I was told that any of
these three advantages would warrant the system of summer pruning to be
generally adopted. The valley has been unusually free from any insect
pest, such as leaf-hoppers (_Erythroneura comes_) caterpillars,
grasshoppers, etc., but suffers from mildew, not, however, to the extent
that the presence of almost daily fogs would lead us to suppose.
Sulphuring is now practiced to some extent, but not as much as it should
be. The sulphur is applied with bellows as soon as the berries are the
size of shot, but not before. Sulphuring for colure, or the dropping of
the grapes when very small, is not practiced, nor was it ever suspected
that it would help.
Public-domain text, read in full here on John Shaqi.
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