. Productive soils; the fundamentals of successful soil management and profitable crop production. Soils. 130 LAND DRAINAGE AND IRRIGATION 3. Spray Irrigation.—Spray irrigation is the process of applying water to the surface of soils or to crops in the form of small drops, spray or mist. The first systems of spray irrigation were the out- growth of city lawn and garden sprinkling. It was soon found that through such spraying, small amounts of water could be applied advantageously to delicate crops, especially for supplementing an uncertain rainfall. The water used is conveyed to the field unde
. Productive soils; the fundamentals of successful soil management and profitable crop production. Soils. 130 LAND DRAINAGE AND IRRIGATION 3. Spray Irrigation.—Spray irrigation is the process of applying water to the surface of soils or to crops in the form of small drops, spray or mist. The first systems of spray irrigation were the out- growth of city lawn and garden sprinkling. It was soon found that through such spraying, small amounts of water could be applied advantageously to delicate crops, especially for supplementing an uncertain rainfall. The water used is conveyed to the field under pressure through pipes or hose. This system of irrigation is well adapted to those conditions in humid sections which demand small and frequent. Fig. 65.—The Skinner -system of irrigation. A field piped for overhead Bpray irrigation. ( ) X . ' applications of water in the preparation of the soil for transplanting, and for supplying quick-growing, market-garden crops and berries with the moisture they so much need for best growth, and especially to keep them thriving during dry periods (Fig. 65). 4. Sub-irrigation.—Underground or subsurface irrigation im- plies that the irrigation water is applied from below the surface. This may be accomplished through the use of open ditches and underground tile, or pipes of iron, concrete, or wood. The open ditch method of sub-irrigation has proved successful to a limited extent in western America and in Florida. The underground pipe system of irrigation has not met with success, except under exacting soil conditions found in only a few localities. At Sanford, Florida, the same tile used in sub- irrigation also serves for drainage during wet 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 Weir, Wilbert Walter, 1882-. Philadelphia London, J. B. Lip
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsoils, bookyear1920
