20 
BULLETIN" 214, IT. S. DEPARTMENT OF AGRICULTURE. 
Table IX. — Yields and cost of production of spring wheat by different methods at the 
Edgeley Field Station, 1907 to 1914, inclusive. 
Treatment and previous 
Number 
of plats 
averaged. 
Yield per acre 
(bushels). 
crop. 
1907 
1908 
1909 
1910 
1911 
1912 
1913 
1914 
Average. 
Fall plowed: 
Corn 
Oats 
Wheat 
1 
12.6 
9.5 
7.0 
20.8 
13.0 
15.3 
32.5 
27.6 
23.3 
6.3 
4.7 
5.2 
1.5 
1.0 
.5 
36.7 
30.3 
27.0 
23.0 
15.9 
12.1 
16. S. 
17.1 
9.2 
18.8 
14.9 
12.5 
Total or average. . . 
4 
9.7 
15.5 
27.7 
5.2 
1.0 
31.1 
16.7 
15.1 
15.3 
Spring plowed: 
Corn 
Oats 
2 
1 
1 
a 13. 2 
4.2 
4.1 
a 15. 8 
13.5 
13.3 
2S.0 
25.8 
28.3 
4.7 
3.8 
4.0 
.8 
.2 
.7 
35.5 
31.3 
35.0 
22.7 
20.6 
16.3 
16.7 
17.5 
11.3 
17.2 
14.6 
Wheat 
14.1 
Total or average . . 
4 
7.2 
14.2 
27.5 
4.3 
.6 
34.3 
20.6 
15.5 
15.5 
Disked: Corn 
12 
6 13.4 
C18.1 
27.8 
5.7 
2.6 
33.6 
23.6 
17.0 
17.7 
Green manured: 
Rye 
1 
1 
1 
10.5 
10.2 
19.8 
18.2 
11.7 
30.5 
28.6 
23.1 
2.6 
6.3 
3.6 
.3 
.2 
.2 
36.7 
37.5 
34.2 
21.8 
22.1 
24.5 
12.8 
20.3 
14.3 
16.9 
17.9 
Sweet clover 
15.9 
Total or average. . . 
3 
dl0.4 
16.6 
27.4 
4.2 
.2 
36.1 
22.8 
15.8 
16.7 
5 
<un. 9 
15.8 
27.5 
8.0 
3.2 
35.4 
26.1 
16.0 
17.9 
«10.6 
/16.6 
27.6 
5.7 
1.9 
33.9 
22.5 
16.2 
16.9 
Summary of Yields and Digest of Cost. 
Tillage treatment. 
Previous crop. 
Yields, values, etc. (average 
per acre). 
Fall 
Spring 
plowed 
Disked 
Creen 
Summer 
Corn 
Small 
plowed 
(12 
manured 
tilled 
(15 
grain 
(4 plats). 
(4 plats). 
plats). 
(3 plats). 
(5 plats). 
plats). 
(5 plats). 
Yields of grain: 
1907 bushels. . 
9.7 
9 1.2 
6 13.4 
10.4 
10.9 
M3.2 
6.9 
1908 do.... 
15.5 
5 14.2 
clS.l 
16.6 
15.8 
18.2 
13.6 
1909 do.... 
27.7 
27.5 
27.8 
27.4 
27.5 
28.1 
26.5 
1910 do 
5.2 
4.3 
5.7 
4.2 
8.0 
5.6 
4.5 
1°11 do.... 
1.0 
.6 
2.6 
.2 
3.2 
2.3 
.7 
1912 do.... 
31.1 
34.3 
33.6 
36.1 
35.4 
i 34. 
30.8 
1913 do.... 
16.7 
20.6 
23.6 
22.8 
26.1 
23.4 
16.1 
1914 do.... 
15.1 
15.5 
17.0 
15.8 
16.0 
17.0 
14.4 
15.3 
15.5 
17.7 
16.7 
17.9 
17.7 
14.2 
Crop value, cost of production, 
etc.: 
$10. 71 
6.56 
S10.85 
6.09 
S12. 39 
4.75 
811.69 
14.61 
S12.53 
11.50 
Cost 
4.15 
4.76 
7.64 
- 2.92 
1.03 
a Yield of 1 plat. 
6 Average of 5 plats, 
c Average of 9 plats. 
d Average of 2 plats. 
« Average of 18 plats. 
/ Average of 22 plats. 
g Average of 3 plats. 
h Average of 7 plats. 
* Average of 11 plats. 
This station presents for study the results of eight years. Five of 
these have been years of good to heavy production. In one year the 
production was light, in another it was very poor, wdhle the remain- 
ing year was one of practical failure of all methods under study. 
The wide differences in yield resulting from different methods of 
preparation that were obtained at some stations during some years 
