. Productive soils; the fundamentals of successful soil management and profitable crop production. Soils. FACTORS DETERMINING FERTILITY 81. Fig. 30.—A fertile soil. This soil possesses all the qualities, properties and conditions which impart to it productive 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