156 Nebraska Agricultural Exp. Station, Research Bui. 6. 
The application of fertilizer increases the relative yield more 
proportionally than the total water transpired. This results in 
greater efficiency of the plant and a consequent greater produc- 
tion in proportion to the water consumed. Popularly this is 
said to reduce the water requirement, tho in fact it is not a function 
of the transpiration at all but merely a coincidence. 
The ease with which evaporation takes place from the plant 
will not be materially reduced or increased whether the solution 
absorbed is dense or not. As Livingston (1911, p. 161) has 
stated, "A solution of the strength of the highest concentration 
2Z5% 
ZOO % 
S7S% 
l^O % 
J00 7o 
so% 
25% 
o% 
1 
f 
i 
i 
i 
// 
1" 
4' 
% 
/// 
1 
§ 
/// 
7// 
So//. ferf//e&// 
ferf//e 
Chart XX. — Effect of manure on the total water transpired per plant with 
corn. Average, 1911 and 1914. Graph from Table 65. 
