An actual canvass made by this Station in the winter of 1906-7 shows there are in the Chautauqua grape belt at this time 30,000 acres of grapes. The census report of 1900 gave the number of vines for the county as 11,914,706, which at the usual number of vines per acre gives about 20,000 acres for the district. This figure was probably low, though that of the Station for 1907 may be somewhat high. The acreage is distributed in towns approximately as follows: Portland 9500; Westfield 5700; Ripley 5700; Pomfret 4600; Hanover 1950; Sheridan 1950; Dunkirk 600. A correspondent writes that the grape shipments for 1907 indicate a considerably larger acreage for the towns of Hanover and Sheridan than are here given. The average yield of grapes is a little less than two tons per acre for the region. The value of vineyards varies from $100 to $400 per acre.
The crop for the past seven years calculated by The Grape Belt[100] from figures secured from the railroads are as follows:
| “Season of 1900 | 8000 carloads |
| “Season of 1901 | 6669 carloads |
| “Season of 1902 | 5062 carloads |
| “Season of 1903 | 2952 carloads |
| “Season of 1904 | 7479 carloads |
| “Season of 1905 | 5362 carloads |
| “Season of 1906 | 5634 carloads” |
The seeming decrease in carloads shipped as the years progress is far more than made up by the greater use of the fruit in local wineries and grape juice factories.
According to figures gathered in the preparation of this work about 90 per ct. of the grape acreage of the region is set to Concord followed by 3 per ct. of Niagara, 2 per ct. of Worden and 1 per ct. each for Moore Early and Catawba with the remaining 3 per ct. made up of a dozen or more sorts among which Delaware leads.
The shipping season in this district begins early in September and lasts well into November though late varieties, as Catawba, and small lots of Concord are held some weeks longer. Improved storage facilities are yearly lengthening the season.
Several systems of pruning and training are in vogue in the district but the majority of the vineyards are pruned and trained in a system peculiar to Chautauqua County. The posts are from six to eight feet in height, one to each three vines; two wires complete the trellis. The lower wire is from 28 to 32 inches from the ground and the second from 22 to 36 inches above the first, the distance being changed as the vine comes to maturity. The grapes are trained according to the upright system and the vines are renewed to short horizontal arms and but few canes are taken out each year; the trunk reaches only to the lower wire. The arms are loosely tied to the lower wire and the canes and bearing shoots to the wire above. Cultivation varies greatly but the best growers practice close cultivation and make use of fertilizers; the cover crop is growing in favor. Spraying is not very general as the region has been remarkably free from pests. The chief insects now encountered are the grape-vine fidia,[101] the flea-beetle,[102] the grape leaf-hopper[103] and the grape berry moth.[104] The several fungal diseases found in this region are, about in order of importance, black-rot, downy mildew, or “brown-rot,” powdery mildew, and anthracnose, or “bird’s-eye rot.”
THE CENTRAL LAKES DISTRICT
Several important areas of vineyards are grouped about the central lakes in western New York. While there are at least three distinct localities in this district, namely, the areas about the three lakes, Keuka, Canandaigua, and Seneca, yet the soils, climate, varieties and methods of caring for vineyards and product are so nearly alike that all may be treated as one district. The vineyards are in five counties, Ontario, Yates, Schuyler, Steuben and Seneca. The Keuka area, in Yates and Steuben Counties, is by far the largest; and the region is often called the Keuka grape district. Vineyards surround Keuka Lake and all but the northern end of Canandaigua Lake, but only on the banks of the southern half of Seneca Lake are grapes grown. The somewhat extensive vineyards about Naples, south of Canandaigua Lake; Bath, south of Keuka Lake; and of Romulus between Seneca and Cayuga Lakes, belong in the Central Lakes district.
The geology of the Central or Finger Lakes has been studied by many workers and the geological history of these remarkable bodies of water is now well known.[105] It is very generally agreed that these lakes fill, in part, preglacial valleys and that the valleys were transformed into lakes by glacial action. The basins of the lakes may have been and probably were deepened by the erosive action of glaciers but it is fairly certain that there were pre-existing valleys which were dammed by glacial deposit.