BULLETIN 253, U. S. DEPARTMENT OF AGRICULTURE. 
Table VI. — Total, nonmailable, and available water in spring-wheat plats A and B on 
different dates at the Akron Field Station. 
[Data in percentages of dry weight of soil.] 
1908 
1909 
1910 1911 
1912 
1913 
1914 
Plat and depth. 
t> 
*5 
oo | 
1-1 oo 
■a 
o 
OS 
t^ 
8 
LO 
<M 
^ 
9 
< 
ft 
< 
60 
3 
< 
a 
>> 
"3 
ft 
< 
3 
< 
O 
S-i 
ft 
< 
be 
3 
< 
O 
ft 
3 
-*-3 
o 
O 
3 
Plat A (spring plowed) : 
(Total 
1 foot-! Nonavailable 
[Available 
9.4 
7.0 
2.4 
25.8 
7.0 
18.8 
15.3 
7.0 
8.3 
20.7 
7.0 
13.7 
6.9 
7.0 

10.8 
7.0 
3.8 
7.9 
7.0 
.9 
11.7 
7.0 
4.7 
21.8 
7.0 
14.8 
14.3 
7.0 
7.3 
14.8 
7.0 
7.8 
19.2 
7.0 
12.2 
18.0 
7.0 
11.0 
11.7 
7.0 
4.7 
19.1 
7.0 
12.1 
8.8 
7.0 
1.8 
(Total 
2 feet-! Nonavailable. . „ 
(.Available 
11.8 
11.5 
.3 
21.7 
11.5 
10.2 
15.2 
11.5 
3.7 
17.5 
11.5 
6.0 
11.5 
11.5 

12.5 
11.5 
1.0 
11.3 
11.5 

11.5 
11.5 

22.9 
11.5 
11.4 
13.9 
11.5 
2.4 
12.6 
11,5 
1.1 
13.8 
11.5 
2.3 
14.1 
11.5 
2.6 
12.3 
11.5 
.8 
17.6 
11.5 
6.1 
11.2 
11.5 

(Total 
3 feet -{Nonavailable 
[Available 
9.6 
9.3 
.3 
12.7 
9.3 
3.4 
11.4 
9.3 
.1 
12.5 
9.3 
1.2 
10.2 
9.3 
.9 
10.4 
9.3 
1.1 
9.0 
9.3 

9.3 
9.3 

19.3 
9.3 
10.3 
10.7 
9.3 
1.4 
10.1 
9.3 
.8 
10.7 
9.3 
1.4 
9.5 
9.3 
.2 
9.3 
9.3 

10.0 
9.3 
9.1 
9.3 

(Total 
4 feeuNonavailable 
(.Available 
"8." 6 
9.2 
8.0 
1.2 
11.2 
8.0 
3.2 
10.4 
8.0 
2.4 
9.8 
8.0 
1.8 
9.4 
8.0 
1.4 
8.0 
8.0 

7.9 
8.0 

14.2 
8.0 
6.2 
10.4 
8.0 
2.4 
8.9 
8.0 
.9 
9.5 
8.0 
1.5 
8.9 
8.0 
.9 
8.0 
8.0 

8.2 
8.0 
.2 
8.3 
8.0 
.3 
(Total 
5 feet-J Nonavailable 
[Available 
8.2 
8.6 
8.2 
.4 
11.7 
8.2 
3.5 
9.7 
8.2 
r.5 
9.8 
8.2 
1.6 
10.6 
8.2 
2.4 
8.3 
8.2 
.1 
8.0 
8.2 

15.6 
8.2 
7.4 
9.5 
8.2 
1.3 
9.6 
8.2 
1.4 
9.9 
8.2 
1.7 
10.0 
8.2 
1.8 
8.7 
8.2 
.5 
8.2 
8.2 

8.5 
8.2 
.3 
(Total 
6 feet-! Nonavailable 
(Available 
*7."<5 
7.6 
7.6 

25.3 
7.0 
18.3 
11.7 
7.6 
4.1 
14.5 
7.0 
7.5 
9.1 
7.6 
1.5 
16.0 
7.0 
9.0 
9.6 
7.6 
2.0 
6.4 
7.0 

7.3 
7.6 

13.6 
7.0 
6.6 
8.5 
7.6 
.9 
9.9 
7.0 
2.9 
8.8 
7.6 
1.2 
14.4 
7.0 
7.4 
12.3 
7.6 
4.7 
19.4 
7.0 
12.4 
11.7 
7.6 
4.1 
10.8 
7.0 
3.8 
11.0 
7.6 
3.4 
17.6 
7.0 
10.6 
10.0 
7.6 
2.4 
15.9 
7.0 
8.9 
10.6 
7.6 
3.0 
12.8 
7.0 
5.8 
8.5 
7.6 
.9 
10.5 
7.0 
3.5 
8.1 
7.6 
.5 
17.6 
7.0 
10.6 
8.1 
7.6 
.5 
Plat B (fall plowed) : 
(Total 
1 foot-! Nonavailable 
(Available 
9.6 
7.0 
2.6 
7.4 
7.0 
.4 
(Total 
2 feet-! Nonavailable 
(Available 
10.8 
11.5 

22.4 
11.5 
10,9 
13.2 
11.5 
1 7 
15.5 
11.5 
4 
11.918.2 
11.5J11.5 
.4 6.7 
11.5 
11.5 

11.5 
11.5 
n 
20.5 
11.5 
9 
10.5 
11.5 

15.0 
11.5 
3 5 
11.3 
11.5 

11.6 
11.5 
1 
10.1 
11.5 

13.7 
11.5 
? ? 
9.3 
11.5 

(Total 
3 feet< Nonavailable 
(.Available 
8.6 
9.3 

14.9 
9.3 
5 6 
10.1 
9.3 
.8 
11.8 
9.3 
?, 6 
9.8 
9.3 
.5 
14.8 
9.3 
5 5 
9.6 
9.3 
3 
9.2 
9.3 
n 
14.2 
9.3 
4 9 
8.1 
9.3 
n 
9.7 
9.3 
,4 
8.1 
9.3 

8.6 
9.3 

7.2 
9.3 

9.5 
9.3 
? 
8.0 
9.3 

(Total 
4 feet-! Nonavailable 
(Available 
"8." 2 
11.1 
8.2 
2.9 
9.7 
8.2 
1.5 
9.8 
8.2 
1.6 
9.3 
8.2 
1.1 
10.9 
8.2 
2.7 
9.8 
8.2 
1.6 
8.2 
8.2 

9.4 
8.2 
1.2 
8.7 
8.2 
.5 
8.6 
8.2 
.4 
7.4 
8.2 

8.1 
8.2 

6.5 
8.2 

7.6 
8.2 

7.0 
8.2 

(Total 
S feet-! Nonavailable 
(.Available 
"s.'i 
10.0 
8.1 
1.9 
6.7 
7.0 

8.1 
8.1 

7.0 
7.0 

9.1 
8.1 
1.0 
8.6 
7.0 
1 6 
8.7 
8.1 
.6 
7.2 
7.0 
2 
9.5 
8.1 
1.4 
8.0 
7.0 
i n 
10.4 
8.1 
2.3 
10.0 
7.0 
3.0 
8.9 
8.1 
.8 
8.1 
7.0 
1.1 
8.4 
8.1 
.3 
7.8 
T.O 
.8 
9.7 
8.1 
1.6 
7.7 
7.0 
9.1 
8.1 
1.0 
S.3 
7.0 
1 3 
7.5 
8.1 

7.0 
7.0 

8.2 
8.1 
.1 
7.0 
7.0 

6.6 
8.1 

6.7 
7.0 

7.5 
8.1 

6.5 
7.0 

6.4 
8.1 

t (Total 
6 feet-! Nonavailable 
(.Available 
7*6 
6.2 
7.0 

The water available for the use of the plant is computed by sub- 
tracting the nonavailable water from the total water content. It is 
the available water in which the farmer is interested. This, together 
with the rainfall during the growing season, represents the total water 
supply for the production of crops. In order to show more clearly 
the available water, figure 1 has been prepared. In it are presented 
graphically the relative amounts of available water in each foot-sec- 
tion, as shown in Table VI. At the left of the figure is shown the 
depth represented in foot-sections from 1 to 6 feet. The dates the 
determinations were made are shown at the top of each column. 
Each division of the black column represents the percentage of water 
in that foot-section available for the use of the plants on that date. 
