. Bulletin. Agriculture. NITRIFYTNd POWER OF SOILS AT DIFFERENT DEPTHS. 13. Fig. 3.—Diagram showing the nitrification of ammonium sulphate in samples of soil from different depths from plat 120, Trucliee-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, in the previous paragraph. The samples from plat 120 show nitrifica- tion varying rather irregularly with depth. Samples from plat 130 ^^ 20 OePTH ^r W/^/C^ S/JMPL£S iV£/?E Z^/fZTl/.. Please note t
. Bulletin. Agriculture. NITRIFYTNd POWER OF SOILS AT DIFFERENT DEPTHS. 13. Fig. 3.—Diagram showing the nitrification of ammonium sulphate in samples of soil from different depths from plat 120, Trucliee-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, in the previous paragraph. The samples from plat 120 show nitrifica- tion varying rather irregularly with depth. Samples from plat 130 ^^ 20 OePTH ^r W/^/C^ S/JMPL£S iV£/?E Z^/fZTl/.. 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 United States. Bureau of Plant Industry. Washington : G. P. O.
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