. Bulletin. 1901-13. Agriculture; Agriculture. 16 SOILS OF TTCE TTiUCKEE-CARSON TRRTGATION PROJECT. held together by some cenieiitiiig luateriul. As shown in figure 6, the nitrifying power of samples from plat 180 is almost nothing. In this figure the chlorid and sulphate curves are of interest, as those of plat ISO, the poor soil, are far above those of plat 100, the good soil.' ^^ 20 DETfT/y ^T l^/MC/y S/JMPLFS IVFRF 7?J/<FA/ .0"7o6" 6 TO 12" 12 TO 18" I8'^24" 24ro36". 200^ l{? Fig. 7.—Diagram showing tlie nitrification of ammonium sulphate in samples of soil
. Bulletin. 1901-13. Agriculture; Agriculture. 16 SOILS OF TTCE TTiUCKEE-CARSON TRRTGATION PROJECT. held together by some cenieiitiiig luateriul. As shown in figure 6, the nitrifying power of samples from plat 180 is almost nothing. In this figure the chlorid and sulphate curves are of interest, as those of plat ISO, the poor soil, are far above those of plat 100, the good soil.' ^^ 20 DETfT/y ^T l^/MC/y S/JMPLFS IVFRF 7?J/<FA/ .0"7o6" 6 TO 12" 12 TO 18" I8'^24" 24ro36". 200^ l{? Fig. 7.—Diagram showing tlie nitrification of ammonium sulphate in samples of soil from different depths from plat 200, 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 30 inches, Figures 7 to 10, inclusive, show the nitrifying power of samples of soil from plats 200, 210, 220, and 230. They are in fields which have only recently been leveled and irrigated; in fact, 1909 was the first year they had been cropped. They produced a fair crop of barley, but the fie? 0 ^d'-Tve' 67012' I2'70l8" I8to24" 24to36" 200^ .00 II -1001? 1 ij;irite5-Plat2lO_, Hil£hates^_SSLi.^ ig ^ Fig. 8.—Diagram showing the nitrification of ammonium sulphate in samples of soil from different depths from plat 210, Truckee-Carson Experiment Farm. Original nitrate present in samples: Depth, 0 to f. inches, parts per million; t; to 12 inches, ; 12 to IS inches, ; 18 to 24 inches. 3; 24 to 30 inches, 2. young alfalfa sown in the barley was doing only fairly well. The curves from all of these plats show a very low nitrifying power, yet a glance at the figures shows that nitrates were present in moderate quantities in the original samples. l^ridge readings on these samples were made by Mr. Jensen. 211. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabilit
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