A Study ot Colorado Wheat 
i i 
AGRICULTURAL ANALYSES OF SOILS AND SUBSOILS. 
Soil 
Subsoil 
Soil* 
Subsoil 
Percent 
Percent 
Percent 
Percent 
Insoluble . 
57.068 
63.485 
63.547 
Silicic acid . 
. 19.805 
12.754 
9.865 
8.558 
Sulfuric acid . 
0.049 
0.094 
0.069 
Phosphoric acid . 
. 0.120 
0.127 
0.175 
0.160 
Carbonic acid . 
. 3.048 
6.312 
2.976 
4.942 
Chlorin . 
. 0.032 
0.059 
0.025 
0.035 
Potassic oxid . 
. 0.872 
0.742 
0.715 
0.573 
Sodic oxid . 
.. 0.290 
0.432 
0.408 
0.316 
Calcic oxid . 
. 6.100 
8.465 
4.725 
7.310 
Magnesic oxid . 
. 1.355 
1.448 
1.258 
1.376 
Ferric oxid . 
. 5.601 
3.499 
5.663 
5.337 
Aluminic oxid . 
. 3.738 
5.397 
3.563 
2.738 
Manganic oxid (M 3 0 4 ) . 
. 0.118 
0.026 
0.175 
0.160 
Water at 100° C . 
2.816 
2.111 
Ignition . 
. 5.072 
3.887 
3.918 
2.143 
Sum. 
.100.851 
100.265 
99.861 
99.375 
Oxygen equivalent to chlorin. 
. 0.007 
0.013 
0.005 
0.007 
Total . 
.100.844 
100.252 
99.856 
99.368 
Total nitrogen . 
. 0.147 
0.069 
0.143 
0.063 
IT 11 m 11 s . 
. 0.462 
0.675 
0.262 
Humus nitrogen . 
0.060 
0.023 
Hn rmis ash . 
0.537 
0 387 
Water soluble . 
0.388 
0.345 
Potassic oxid sol. in citric acid. 
0.031 
0.018 
Phosphoric acid sol. in citric acid. 
0.021 
0.015 
Potassic oxid sol. in N-5 nitric acid... 
/ 
0.057 
0.020 
Phosphoric acid sol. in N-5 nitric acid. 
. 
0.066 
0.073 
♦This and its corresponding 1 subsoil are composite samples. 
MASS ANALYSIS OF SOIL AND SUBSOIL. 
Soil Subsoil 
Percent Percent 
Silicic acid . 
Sulfuric acid. 
Phosphoric acid . 
Carbonic acid. 
Chlorin . 
Potassic oxid. 
Sodic oxid. 
Calcic oxid. 
Magnesic oxid. 
Ferric oxid. 
Aluminic oxid . 
Manganic oxid (Mn 3 0 4 ) 
Water at 100° C. 
Ignition . 
63.500 
61.350 
0.446 
0.178 
0.217 
0.185 
2.976 
4.942 
0.025 
0.035 
2.475 
2.607 
1.305 
1.444 
5.250 
8.170 
1.680 
1.796 
6.263 
5.805 
9.200 
8.760 
0.210 
0.190 
2.816 
2.111 
3.918 
2.143 
Sum... 100.281 
Oxygen equivalent to chlorin. 0.005 
99.716 
0.007 
Total 
100.276 99.709 
