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
_Winds, Injurious or Beneficial._--In the California raisin districts
hot, electrical winds are much feared in the months of June and July, or
before the grapes have begun to ripen. In the San Joaquin valley these
winds come from the northwest and sweep down over the vines, often
scorching the leaves and frequently drying the berries on the exposed
side. In the course of a few days the berries dry up entirely, and the
whole bunch is lost. These drying winds are not peculiar to any certain
part of California, but occur from time to time in every raisin district
on the coast, in the south as well as in the center, on the coast as
well as inland. The remedy is to grow the vines low and to keep the
berries well covered. The planting of windbreaks will also modify these
winds, and in places where they formerly were common they have now
entirely ceased or become so modified that they cause no injury to the
grapes, but prove even beneficial on account of the quicker and better
maturing of the fruit. In certain districts, especially in San
Bernardino and in Orange, some very drying winds are experienced late in
the season,--in September and October. For the raisin-growers these
winds are a blessing. They quickly dry the exposed grapes, which have
been retarded in drying, or perhaps even injured by a previous shower of
rain or by continued heavy dews. These winds are undoubtedly desert
winds, and similar to the Terral of Malaga, which, sweeping over the
inland plains of La Mancha, reach the coast vineyards and quickly mature
the grapes. In Malaga there is also a moist southern wind, the Levante,
which retards the ripening and the curing of the grapes, and which must
be considered as our southwesterly fall winds, which, saturated with
moisture, swell the overdried raisins as well as prevent the yet green
grapes from drying. They are precursors of the rainy season, and warn
the grower to prepare his dryer if he possess one. In Greece and Smyrna
such hot or moist winds are also known and feared, and cause at times
much damage in one way or another. We might here also mention the cold
“northers” which are common in the California raisin districts in
springtime, and which sometimes both cause the young shoots to break off
from the old wood and make it easy for the mildew to attack the flowers
or the young berries of the vines. Against these northwest winds we have
two remedies, summer pruning and sulphuring, which, if applied in time,
are both quite effective.
Public-domain text, read in full here on John Shaqi.
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