158 Nebraska Agricultural Exp. Station, Research Bui. 6. 
Table 66 Continued. — Summary showing plant growth and water 
requirements of corn in six degrees of soil fertility during four 
consecutive years, 1911 to 1911+ . The potometers were filled in 
1911 and the same soil remained in them undisturbed thruout 
the period. 1 
Year 
No. of 
potom- 
eters 
averaged 
Dry matter 
Total water 
transpired 
Transpiration per 
gram 
Ear 
Total 
Dry weight 
of ear 
Total dry 
matter 
(1) 
(2) 
Grams 
(3) 
Grams 
(4) 
Kilograms 
(5) 
Grams 
(6) 
Grams 
(7) 
INTERMEDIATE SOIL 
1911 . . . 
4 
77.48 
184.39 
88.306 
' 1,139.73 
478.90 
1912 
4 
34.88 
78.99 
35.480 
! 1,017.21 
449.16 
1913. . . 
4 
25.67 
114.67 
65.430 
| 2,548.89 
570.59 
1 Q1 A 
A 
4; 
20.50 
103.50 
49.520 
2,415.61 
Average 
16 
39.63 
120.93 
59.68 
1,780.36 
494.28 
INTERMEDIATE SOIL WITH MANURE 
1911 ... 
4 
209.79 
413.63 
141.079 
672.48 
341.10 
1912. . . 
4 
101.48 
182.26 
50.269 
495.36 
275.81 
1913. . . 
4 
77.00 
218.75 
108.773 
1,412.69 
497.25 
1914. . . 
4 
75.75 
215.75 
74.080 
977.95 
343.35 
Average 
16 
116.01 
257.60 
93.55 
889.62 
364.38 
FERTILE SOIL 
1911. . . 
4 
134.77 
269.85 
105.840 
785.34 
392.22 
1912. . . 
4 
92.70 
167.14 
44.235 
477.18 
264.66 
1913. . . 
4 
85.50 
224.25 
122.269 
1,429.94 
545.24 
1914. . . 
4 
57.00 
167.00 
63.710 
1,117.72 
381.50 
Average 
16 
92.49 
207.06 
84.01 
952.55 
395.91 
FERTILE SOIL WITH MANURE 
1911... 
3 
241.88 
472.55 
163.685 
676.72 
346.40 
1912. . . 
4 
132.75 
241.58 
56.767 
427.62 
234.98 
1913. . . 
4 
122.25 
308.25 
136.986 
1,120.54 
444.40 
1914. . . 
4 
137.00 
288.50 
89.320 
651.97 
309.60 
Average 
15 
158.47 
327.72 
111.69 
719.21 
333.85 
1 With the exception of 1911, the plants in these tests were abnormal. 
The data in Summary Table 60 should be relied upon to illustrate the principles 
concerning the relation of soil fertility to water requirement. 
For a discussion of method used in compiling averages for two or more 
years, see page 42. 
