A Study oe Colorado Wheat 
17 
pendable. The first set of nitric-nitrogen determinations was made 
by the phenolsulphuric acid method, all the others were made by re¬ 
duction with a zinc-copper couple. With these soils the latter usu¬ 
ally gives a shade higher results. 
SAMPLES TAKEN 29 APRIL, 1913. 
. 
Section 
1700 
Section 1800 
Section 1900 
Nitric 
Nitric 
Nitric 
Nitrogen 
Nitrogen 
Nitrogen 
Depth 
Moisture 
Parts per 
Moisture 
Parts per 
Moisture 
Parts per 
Percent 
Million 
Percent 
Million 
Percent 
Million 
0 
to 
6 
inches.... 
13.60 
7.00 
14.50 
4.00 
13.97 
4.00 
7 
to 
12 
inches.... 
14.11 
6.00 
16.91 
5.00 
17.62 
3.00 
13 
to 
24 
inches.... 
15.20 
4.50 
16.09 
3.00 
15.78 
1.00 
25 
to 
36 
inches.... 
14.69 
2.50 
14.78 
1.50 
15.10 
1.00 
37 
to 
48 
inches.... 
13.12 
2.50 
13.52 
1.50 
13.06 
0.15 
0 
to 
6 
inches.... 
14.68 
8.00 
14.22 
8.00 
14.58 
3.00 
7 
to 
12 
inches.... 
15.79 
7.00 
17.02 
5.00 
17.67 
4.50 
13 
to 
24 
inches.... 
14.54 
4.50 
16.52 
2.50 
16.45 
1.50 
25 
to 
36 
inches.... 
14.69 
2.50 
14.78 
1.50 
15.10 
1.00 
37 
to 
48 
inches.... 
14.81 
1.50 
14.50 
Trace 
14.32 
0.05 
SAMPLES TAKEN 12 MAY, 1913. 
Section 
1700 
Section 1800 
Section 1900 
Nitric 
Nitric 
Nitric 
Nitrogen 
Nitrogen 
Nitrogen 
Depth 
Moisture 
Parts per 
Moisture 
Parts per 
Moisture 
Parts per 
percent 
Million 
Percent 
Million 
Percent 
Million 
0 
to 
6 
inches.... 
16.74 
5.58 
16.90 
11.02 
17.18 
6.39 
7 
to 
12 
inches.... 
19.18 
6.94 
18.57 
10.20 
18.48 
6.12 
13 
to 
24 
inches.... 
17.51 
2.58 
17.08 
' 5.30 
15.94 
2.04 
25 
to 
36 
inches.... 
15.10 
1.22 
15.37 
2.04 
14.59 
1.22 
37 
to 
48 
inches.... 
12.93 
0.95 
14.47 
1.22 
13.23 
0.68 
0 
to 
6 
inches.... 
15.71 
6.63 
16.36 
5.31 
16.52 
7.21 
7 
to 
12 
inches.... 
19.36 
7.48 
18.68 
10.20 
18.53 
8.02 
13 
to 
24 
inches.... 
16.90 
2.31 
16.77 
3.67 
16.68 
2.58 
25 
to 
36 
inches.... 
15.43 
0.95 
15.12 
1.22 
15.18 
0.68 
37 
to 
48 
inches.... 
14.97 
0.68 
14.54 
0.82 
14.63 
0.54 
From 
the evening - of May 
8 to the 
morning 
oi May 10 
we had 
a rainfall 
of 
1.05 
inches. 
SAMPLES TAKEN 26 MAY, 1913. 
Section 
1700 
Section 1800 
Section 1900 
Nitric 
Nitric 
Nitric 
Nitrogen 
Nitrogen 
Nitrogen 
Depth 
Moisture 
Parts per 
Moisture 
Parts per 
Moisture 
Parts per 
Percent 
Million 
Percent 
Million 
Percent 
Million 
0 
to 
6 
inches.... 
15.37 
8.02 
15.05 
7.62 
13.66 
6.80 
■7 
to 
12 
inches.... 
16.74 
9.38 
17.83 
9.11 
16.98 
6.66 
13 
to 
24 
inches.... 
15.71 
3.67 
16.86 
3.13 
16.19 
2.86 
25 
to 
36 
inches 
15.02 
1.63 
15.60 
1.90 
14.92 
0.95 
37 
to 
48 
inches.... 
13.78 
0.95 
14.14 
0.82 
14.14 
0.54 
0 
to 
6 
inches 
15.39 
7.21 
14.01 
6.94 
13.42 
6.39 
7 
to 
12 
inches.... 
17.74 
11.29 
17.30 
9.38 
17.04 
5.44 
13 
to 
24 
inches.... 
16.26 
3.40 
16.16 
4.08 
16.03 
1.63 
25 
to 
36 
inches.... 
15.25 
1.63 
15.13 
2.31 
15.26 
1.22 
37 
to 
48 
inches.... 
14.72 
0.95 
15.05 
1.77 
14.96 
0.54 
