. Bacteriological studies of the soils of the Truckee-Carson Irrigation Project. Soil microbiology; Soils. NITRIFYING POWER OF SOILS AT DIFFERENT DEPTHS. 13 90 a so ^ 70 v 60 s i 5 30 1 Q- 20 24" 24/»; 900 LJ 800 | 700 | 600 \!) I 500 ^ 400 U 300 § 200 ^ 100 <$! 0 £ -100 $/ Ay ^ f ^/phafes-P/af/2L -— ~C/?/or/cfc -P/at/2o M?ri/es_-&afj_ 2°---'""~" Fig. 3.—Diagram showing the nitrification of ammonium sulphate in samples of soil from different depths from plat 120, Truckee-Carson Experiment Farm. Original nitrate present in samples: Depth, 0 to 6 inches,
. Bacteriological studies of the soils of the Truckee-Carson Irrigation Project. Soil microbiology; Soils. NITRIFYING POWER OF SOILS AT DIFFERENT DEPTHS. 13 90 a so ^ 70 v 60 s i 5 30 1 Q- 20 24" 24/»; 900 LJ 800 | 700 | 600 \!) I 500 ^ 400 U 300 § 200 ^ 100 <$! 0 £ -100 $/ Ay ^ f ^/phafes-P/af/2L -— ~C/?/or/cfc -P/at/2o M?ri/es_-&afj_ 2°---'""~" Fig. 3.—Diagram showing the nitrification of ammonium sulphate in samples of soil from different depths from plat 120, Truckee-Carson Experiment Farm. Original nitrate present in samples: Depth, 0 to 6 inches, parts per million; 6 to 12 inches, ; 12 to 18 inches, ; 18 to 24 inches, ; 24 to 36 inches, y in the previous paragraph. The samples from plat 120 show nitrifica- tion varying rather irregularly with depth. Samples from plat 130 11° DEPTH /IT WHiCH S/IMPL£S rV£P£7ZKEA/.. ~~ " Sulphates- P/af/3^ „. Nitrites - PTatho 200 ^| 100 it is Fig. 4.—Diagram showing the nitrification of ammonium sulphate in samples of soil from different depths from plat 130, Truckee-Carson Experiment Farm. Original nitrate present in samples: Depth, 0 to 6 inches, parts per million; 6 to 12 inches, ; 12 to 18 inches, ; 18 to 24 inches, ; 24 to 36 inches, 211. 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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