. Bacteria in relation to country life. Bacteria. Green-Manures on Heavij Lands 255 hence the decomposi- tion processes do not run their course as rapidly here, and the green-manures and animal manures last longer. In other words, the soil-humus needs to be replenished on heavier soils less fre- quently than on light soils. Similarly, the losses of nitrogen are usually smaller from heavier soils than they are from light soils, be- cause the nitrates are not as readily leached from the former, nor are the decay processes in them sufficiently in- tense to lead to the setting free of gaseous nitr
. Bacteria in relation to country life. Bacteria. Green-Manures on Heavij Lands 255 hence the decomposi- tion processes do not run their course as rapidly here, and the green-manures and animal manures last longer. In other words, the soil-humus needs to be replenished on heavier soils less fre- quently than on light soils. Similarly, the losses of nitrogen are usually smaller from heavier soils than they are from light soils, be- cause the nitrates are not as readily leached from the former, nor are the decay processes in them sufficiently in- tense to lead to the setting free of gaseous nitrogen. One excep- tion is found in heavy soils that are apt to become water-logged. Under such conditions, the soil-nitrates may be reduced with the evolu- tion of nitrogen Fig. 48. Young alfalfa plants. Tha few tubercles are, for the most part, larg^.. 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 Lipman, Jacob Goodale, 1874-1939. New York, Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1911
