. The nature and properties of soils; a college text of edaphology. Soils. bOiJu xiiliAr Z4:0 drainage, and a proper structural development, sufficient or- ganic matter and deep and careful plowing, favor optimum moisture conditions. Sucli moisture regulation means a low- ered specific heat, rapid conductivity, and good convection. The increase of soil organic matter may act directly in heat control by darkening the color and thus increasing absorp-. FiG. 46.—Curves sliowing the hourly temperature of a bare soil at a depth of four inches and of the air just above the soil in Ger- many, May 26.
. The nature and properties of soils; a college text of edaphology. Soils. bOiJu xiiliAr Z4:0 drainage, and a proper structural development, sufficient or- ganic matter and deep and careful plowing, favor optimum moisture conditions. Sucli moisture regulation means a low- ered specific heat, rapid conductivity, and good convection. The increase of soil organic matter may act directly in heat control by darkening the color and thus increasing absorp-. FiG. 46.—Curves sliowing the hourly temperature of a bare soil at a depth of four inches and of the air just above the soil in Ger- many, May 26. (Data from Wollny.) tion. A soil-mulch, being dry, not only may check evapora- tion but at the same time may lower radiation. Any method of handling the land which tends to benefit its physical condition, better its tilth and control its moisture, tends at the same time towards a proper heat control. The whole question may be summarized by saying that, if a farmer adopts a proper system of moisture control and at the same time employs methods that continually encourage a better. 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 Lyon, T. L. (Thomas Lyttleton), 1869-1938; Buckman, Harry Oliver, 1883-. New York, Macmillan
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Keywords: ., bookauthorlyontlth, bookcentury1900, bookdecade1920, bookyear1922
