10 Nebraska Agricultural Exp. Station, Research Bui. 6. 
TABLE PAGE 
62. Summary of data secured from potometers contain- 
ing soils of six degrees of fertility. 1914 149 
63. Summary of average results secured during two years 
from potometers containing six degrees of soil 
fertility. 1911 and 1914 151 
64. Showing in per cent the effect of applying manure to 
potometers of different degrees of soil fertility. 
The results with manure are here expressed in 
per cent of the results without manure 152 
65. Summary showing the relative dry matter and water 
requirements of corn on the different soil types 
during two years. 1911 and 1914 154 
66. Summary showing plant growth and water require- 
ments of corn in six degrees of soil fertility during 
four consecutive years. 1911 to 1914. The potom- 
eters were filled in 1911 and the same soil remained 
in them undisturbed thruout the period 157 
67. Effect of variety, adaptation, and kind of crop on 
the water requirement. 1914 161 
68. Summary showing the effect of variety, adaptation, 
and kind of crop on the water requirement. 1914 165 
69. Relation of ash content in the corn plant to the 
amount of transpiration as affected by a difference 
in atmospheric humidity 171 
70. Effect of difference in seasonal climatic conditions 
upon the relation between transpiration and the 
ash content of corn plants. 1913 and 1914 172 
71. Relation of ash content to transpiration from corn 
plants grown in three degrees of soil moisture con- 
tent, as affected by the atmospheric evaporating 
power of two different seasons. 1913 and 1914 173 
72. Summary of ash ratios for dry and humid greenhouses, 
1912, and for the two years, 1913 and 1914 174 
73. Relation of ash content of Pride of the North corn 
plants to transpiration and fertility of soil. 1914 176 
74. Relation of ash content of Pride of the North corn 
plants to transpiration and fertility of soil. 1913 
and 1914 177 
75. Relation of ash content of corn to transpiration and 
fertility of soil. (Average of three fertility tests.) . . . 178 
76. Relation of ash content of Hogue's Yellow Dent corn 
plants to transpiration and moisture content of soil. 
1913 and 1914 179 
