WATER UTILIZATION BY SPEIXG WHEAT. 
19 
ference between plats A and B in water stored. Plat C or D has 
always stored considerably more water than the other two plats. 
AVERAGE OF RESULTS FOR ALL STATIONS. 
The data from the individual stations demonstrate that the storage 
and use of water by the wheat crop are somewhat different at the 
individual -stations. There are, however, enough points in common 
between the different stations to permit general deductions to be 
made from the data as a whole. 
For this purpose the water content and use at all stations, as in- 
dicated by the symbols, are brought together in a composite table. 
It must be recognized that this composite table shows a greater per- 
centage of water use in the lower depths than actually exists. The 
data on the fifth and sixth foot sections of soil are largely from 
stations where water has been used to that depth. The inclusion of 
the lower depths at stations like Edgeley, Belle Fourche, Huntley, 
and Scottsbluff would greatly increase the number of cases where 
no water was used in these foot sections, the soil being either wet 
or dry. 
The data from the individual foot sections of soil at the different 
stations are grouped together in Table 2. In the upper part of the 
table the data are presented by cases, the figures under each symbol 
indicating the number of times that symbol was used in Table 1 for 
the purpose of indicating the water relations of that plat at the 
depth indicated. In the lower part of the table these figures are 
reduced to percentages in order to make the different foot sections 
of soil more directly comparable. For example, plat A has 135 
determinations of the first foot and only 72 of the sixth foot. A 
comparison of the two sections in regard to the proportion of the 
time a particular symbol has been used is more readily made when 
they are expressed as percentages. 
Table 2. — Recapitulation- of Table 1, shewing the number of times each symbol 
ivas used in describing the use of water in each foot section of each plat. 
[The hrst part of the table records the number of cases studied; in the second part these are expressed 
as percentages of the totals.] 
Instances of the use of each symbol as indicating the v% 
ater relations 
on olats A, B, 
and C or D 
Symbol use at depth 
indicated (foot sec- 
F. 
PW. 
PD. 
ow. 
on. 
Tot: 
tions of soil). 
A. 
B. 
Cor 
D. 
A. 
B. 
Cor 
D. 
A. 
B. 
Cor 
D. 
A. 
B. 
Cor 
D. 
A. 
B. 
Cor 
A. 
B. 
Cor 
Times used: 
"•■ 
101 
98 
107 
14 
14 
15 
19 
22 
10 
1 
1 
1 



135 
135 
133 
2.. 
5S 
57 
107 
14 
17 
IS 
52 
47 
8 
1 


10 
14 

135 
135 
133 
Section 
3 
30 
27 
90 
8 
8 
11 
39 
45 
14 


1 
45 
42 
3 
122 
122 
120 
4.. 
5 
9 
45 
11 
7 
18 
28 
26 
29 
3 
3 
2 
56 
57 
11 
103 
102 
105 
5.. 

3 
11 
5 
3 
2S 
14 
11 
IS 
6 
13 
13 
56 
52 
16 
81 
82 
86 
ft. 

1 
1 
4 
1 
21 


10 
14 
17 
23 
49 
48 
27 
72 
72 
82 
Relation to total, per 
cent: 
I- 
10 
43 
73 
4? 
80 
SO 
10 
10 
10 
13 
11 
14 
14 
39 
16 
35 
8 
fi 
1 
1 
1 

1 


7 

in 


1 
24 
9? 
7 
7 
q 
W, 
37 
13 
n 

1 
37 
34 
3 
Section 
+ 
9 
43 
11 
17 
27 
25 
28 
3 
3 
'? 
54 
56 
10 
a 
n 
4 
13 
6 
4 
32 
17 
13 
21 
7 
16 
15 
69 
63 
19 
p, 

1 
1 
6 
1 
26 
7 
7 
12 
19 
24 
28 
68 
67 
33 
