. Vegetable forcing. Forcing (Plants); Vegetable gardening. 16 VEGETABLE FORCING houses covering the same area ; furthermore, there is not so much air to be re-heated. The large house, therefore, requires less radiating surface and less fuel. The length of the house is not of great consequence, although unusual length should be avoided. Most of the largest houses vary from 200 to 600 feet in length. Two hundred feet is probably the maximum which can be heated satisfactorily with the gravity system of hot water, but with forced circulation the largest ranges may be heated economically with hot
. Vegetable forcing. Forcing (Plants); Vegetable gardening. 16 VEGETABLE FORCING houses covering the same area ; furthermore, there is not so much air to be re-heated. The large house, therefore, requires less radiating surface and less fuel. The length of the house is not of great consequence, although unusual length should be avoided. Most of the largest houses vary from 200 to 600 feet in length. Two hundred feet is probably the maximum which can be heated satisfactorily with the gravity system of hot water, but with forced circulation the largest ranges may be heated economically with hot Fig. 3.—Two-acre, three-quarter-span hillside house near New Castle, Pa. Commercial houses are built much higher than for- merly. For many years it was the belief that to obtain the best results the glass must be near the plants. Suc- cessful growers, however, have learned that better crops may be grown in higher houses. The distance from ground to gutter varies from 5 to 9 feet in the large modern houses, 0T4 feet probably being the most popular height. There must be ample room for the training of plants and, in connected ranges, for workmen to walk from house to house without striking their heads on thi gutters. High houses make it possible to provide free ventilation without subjecting the plants to cold drafts. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Watts, Ralph Levi, 1869-. New York, Orange Judd co.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectvegetablegardening
