. Bacteriological studies of the soils of the Truckee-Carson Irrigation Project. Soil microbiology; Soils. DETAILED STUDY OF SOIL TYPICAL OF EXTENSIVE AKEAS. 29. Fig. 18.—Diagram showing the effect of calcium sulphate upon nitrification of ammonium sulphate in samples of soil from plat 300, Truckee-Carson Experiment Farm, representing poor soil "A "; plat 310, representing poor soil "B"; and plat 320, representing good soil. Table VII.—Nitrate formed from nitrite by samples of soil from plats 330 and 350, Truckee-Carson Irrigation Project, in medium for nitrate bacteria. In
. Bacteriological studies of the soils of the Truckee-Carson Irrigation Project. Soil microbiology; Soils. DETAILED STUDY OF SOIL TYPICAL OF EXTENSIVE AKEAS. 29. Fig. 18.—Diagram showing the effect of calcium sulphate upon nitrification of ammonium sulphate in samples of soil from plat 300, Truckee-Carson Experiment Farm, representing poor soil "A "; plat 310, representing poor soil "B"; and plat 320, representing good soil. Table VII.—Nitrate formed from nitrite by samples of soil from plats 330 and 350, Truckee-Carson Irrigation Project, in medium for nitrate bacteria. Incubated at 28° C. 211 Nitrate Nitrate No. of plat. Depth of soil. formed in 10 days formed in 20 days Charac- ter of (parts per (parts per soil. million). million). Inches. 330 0-6 Poor. 6-12 12-18 12. 60 18-24 350 0-6 Good. 6-12 12-18 18-24 90. 32. 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 Kellerman, Karl F. (Karl Frederic), 1879-1934; Allen, Edward Riley, 1884-; United States. Department of Agriculture; United States. Bureau of Plant Industry; United States. Government Printing Office. Washington : U. S. Dept. of Agriculture
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