YOLO AND SOLANO.
Location and Acreage.
—The district is situated north of San Francisco Bay, bordering on it as well as on the Sacramento river, and is a part of the Sacramento valley. The number of acres overreaches seven thousand, and is increasing yearly. The principal vineyards are those of the late G. G. Briggs at Davisville, Solano county, with three hundred acres, and at Woodland in Yolo county, four hundred and sixty acres; E. Gould, also at Davisville, two hundred acres; H. M. Larou, at same place, about fifty acres; sundry vineyards around Davisville, fifty acres; around Woodland and Capay valley, some four hundred acres;—or in full bearing more than two thousand acres. The district comprises the southern part of Yolo and the northern part of Solano counties. The grape used for raisins is principally the Muscat of Alexandria, except the vineyard of R. B. Blowers, which is composed exclusively of Gordo Blanco. The Muscat of Alexandria is generally preferred, as it makes a fine raisin and bears well.
Soil and Climate.
—The soil varies somewhat; the best is a deep gray, alluvial bottom-land soil; other soils are not much thought of for Muscatel raisin grapes. The average depth of water is about eighteen feet from the surface. It is not necessary, as a rule, to first level the land, as the ground is very level naturally. The rainfall averages thirteen inches. The most rain falls in January and February; the least falls in August. There is seldom a shower in the summer, but about November 1st rains are almost always certain to interfere with the drying of the grapes. Sometimes the rain comes in October, when it causes considerable damage to the grapes and partially dried raisins. There is very little dew in summer time, but plenty in October and also some in September. The temperature is considerably modified by the nearness of the bay. It reaches in the hottest part of the summer one hundred and fourteen degrees Fahrenheit in the shade, but only for a day or two. The average highest is about ninety degrees Fahrenheit in the shade, while the heat almost every day in July and August shows eighty-five degrees Fahrenheit in the shade. Thus this district is considerably cooler than the San Joaquin valley and San Bernardino county, but warmer than Los Angeles and San Diego districts. There are heavy frosts in winter, when at times even the thermometer falls to eighteen degrees Fahrenheit, although this is the extreme low temperature, six or seven degrees of frost being more common. There is spring frost in April one year in every three or four, and the vineyards are then smoked to prevent injury to the vines. Irrigation is not needed to produce crops, only to produce larger crops, as it increases the yield fifty per cent. Generally two irrigations a year are needed, the first one in early summer, the other later, when the berries have begun to ripen. Water from ditches is used and carried to the vines in furrows only, no flooding being practiced.
The Vineyard.
—In planting, cuttings are used principally, but rooted vines are preferred by some. The distances most common are ten by ten feet each way, one vineyard being set ten feet by sixteen feet. The vines bear the third year. The ground is plowed and cross-plowed, the first plowing being from the vines, and the second to the vines. Harrowing and cultivating both ways are secondary operations, continued to the middle of May, but seldom later. Hoeing the vines finishes the work of the soil in the middle or end of May.
In pruning, the crowns are never raised over six inches above the ground, from seven to eight spurs are left on large vines, and each spur is pruned to two or three eyes each. Formerly more eyes, say from four to five, were left on each cane, but it was found that this was too many, hence the change to two or three eyes. Summer pruning is practiced by some, but not by all; there is yet a controversy in regard to its usefulness. When practiced, the vines are cut six or eight inches from the tops, and this is done not later than June. Sulphuring is in use everywhere; the vines are sulphured two times, once before and once after the bloom. Sulphured vines do not suffer from mildew. Colure, or the dropping of the young berries, is not common, the Muscat of Alexandria even setting well. The leaf-hopper (Erythroneura comes) is more common in some years than in others. They eat the leaves and cause the grapes to sunburn. Grasshoppers have never caused any damage. Grape moths are more or less common, but never troublesome. Black-knot is often seen on neglected vines, but is rare in old vineyards well cared for.
The Crop.
—The grapes ripen in September, generally from the first to the tenth. The drying and curing occupies three weeks. The bunches are placed on trays made of pine two feet by three. Several growers have artificial dryers, which are needed for curing the second crop. The sweatboxes are large enough to contain seventy pounds of raisins, and are eight inches deep. In the Briggs raisin vineyard, the following brands are packed: three crown Layer Muscatels; two crown Layer Muscatels; one and two crown Loose Muscatels; Dehesas and Seedless Muscatels. The raisins are seldom sold in sweatboxes, and no fixed price is known for such raisins. Most growers pack their own raisins. The oldest raisin vineyard is that started by the late G. G. Briggs, and now owned by his widow. The most renowned vineyard was that owned by R. B. Blowers of Woodland, which has of late years been mostly replaced by other crops. Raisin land can be had for from one hundred to one hundred and fifty dollars per acre. This is vacant land of the very best quality. An average profit of fifty dollars per acre is realized, although some have made more money out of their vines. A yield of two or three tons of grapes per acre is common. As regards prices of labor, etc., the following were those most common last season: Man and team, who boards himself and animals, three dollars and twenty-five cents per day, can plow one and a half acres of vineyard well. Pruning, one man, one dollar per day, can prune three hundred vines, or three-fourths of an acre. Laborers generally board themselves. The raisins of this district were the first ones in the State or on this continent to attract attention, and they were the first which successfully competed with Spain. The crop of 1889 reached one hundred and twenty thousand boxes.