Fixation of Nitrogen in Colorado Soirs 
35 
IMITRIC NITROGI5N PARTS PER • MILLION, SURE ACE SOILS, 
Wellington District 
Samples 
taken to Maximum 
Depth 
of Six Inches, Range 68 
W. 
T. 
9 N. 
Sec. 15 T. 
9 N. 
Sec. 22 T. 
9 N. 
See. 21 
(1) 
1 
28.5 (2) 
1 
15.8 (3) 
1 
7.5 
2 
21.6 
2 
14.0 
2 
10.8 
3 
20.2 
3 
13.1 
3 
14.9 
4 
28.5 
5 
13.1 
4 
4.6 
5 
29.4 
7 
1.9 
5 
21.5 
7 
9.8 
8 
9.3 
6 
14.5 
9 
8.9 
9 
25.7 
7 
52.7 
10 
11.0 
10 
8.6 
8 
11.7 
11 
21.5 
9 
23.3 
10 
36.4 
11 
28.9 
12 
5.1 
T 
9 N. 
See. 20 
T. 
9 N. 
Sec. 25 
T. 
9 N. 
Sec. 20 
4 
7.5 
1 
1.4 
3 
41.1 
(4) 
6 
4.2 
(5) 
2 
4.6 
(6) 
4 
17.7 
8 
4.6 
3 
25.2 
5 
26.6 
12 
2.8 
4 
7.5 
6 
8.4 
5 
56.3 
7 
44.8 
6 
7.9 
8 
7.9 
7 
10.8 
9 
78.3 
8 
9.8 
10 
9.8 
9 
19.6 
11 
17.3 
10 
12.1 
12 
85.4 
11 
22.9 
12 
9.8 
T. 
9 N. 
Sec, 30 
T. 
9 N. 
Sec. 35 
T. 
8 N. 
Sec. 2 
1 
23.3 
1 
5.6 
1 
18.2 
2 
7.0 
2 
30.3 
2 
12.6 
3 
9.3 
3 
7.5 
3 
7.9 
(71 
4 
11.2 
4 
13.1 
(9) 
4 
1092.0 
5 
5.6 
5 
11.7 
5 
23.8 
6 
19.7 
6 
36.9 
6 
15.9 
7 
8.9 
7 
6.5 
7 
61.6 
8 
9.8 
8 
81.2 
8 
21.0 
9 
877.3 
9 
12.1 
9 
26.6 
10 
10.3 
10 
14.0 
10 
53.7 
11 
12.6 
11 
7.0 
11 
26.6 
12 
10.3 
12 
298.7 
12 
1941.3 
T. 
S N. 
See. 1 
T. 
8 N. 
Sec. 12 
T. 
8 N. 
Sec. 11 
1 
746.6 
1 
141.4 
1 
44.0 
2 
72.3 
2 
16.5 
2 
24.3 
(10) 
3 
29.4 
(11) 
4 
25.2 
(12) 
3 
10.7 
4 
17.3 
5 
16.3 
4 
1040.7 
5 
25.2 
6 
17.7 
5 
40.1 
6 
11.7 
7 
28.5 
6 
15.4 
7 
42.5 
8 
12.6 
7 
28.9 
9 
690.7 
9 
33.8 
8 
53.7 
10 
10.3 
10 
29.4 
9 
14.5 
11 
19.6 
10 
21.0 
12 
12.6 
11 
29.4 
12 
43.4 
