. Productive soils; the fundamentals of successful soil management and profitable crop production. Soils. Fig. 57.—The two protected outlets to the drainage system on this marsh of 125 acres Two steel pipes screened by iron rods. ifv^-rw. sm'^ Fig. 58.—An open ditch should be deep enough to permit tile to empty into it. With few exceptions, an open ditch smaller than six feet deep, three feet wide at the bottom, and fifteen feet wide at the top, has no excuse for an existence. (Wisconsin Station.) feet wide at the top, has no excuse for an existence; large tile should be used instead, or a sur
. Productive soils; the fundamentals of successful soil management and profitable crop production. Soils. Fig. 57.—The two protected outlets to the drainage system on this marsh of 125 acres Two steel pipes screened by iron rods. ifv^-rw. sm'^ Fig. 58.—An open ditch should be deep enough to permit tile to empty into it. With few exceptions, an open ditch smaller than six feet deep, three feet wide at the bottom, and fifteen feet wide at the top, has no excuse for an existence. (Wisconsin Station.) feet wide at the top, has no excuse for an existence; large tile should be used instead, or a surface-run combined with tile will work best. Tile Combined With a Surface-Run.—In constructing this. 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. Lippincott company
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsoils, bookyear1920
