COEN IN THE (JKEAT PLAINS AKEA. 
19 
BELLE FOURCHE FIELD STATION. 
Table X presents the results of the work of six years with corn in 
rotations and under varying tillage methods at Belle Fourche, S. 
Dak. In one j 7 car, 1911, extreme drought caused a failure of all 
methods under trial. In three of the six years grain was produced by 
all methods. In the other two years all methods produced fodder, 
but grain was produced only upon land which was summer tilled the 
previous year. 
Table X. — Yields and cost of production of corn by different methods at the Belle Fourche 
Field Station, 1909 to 1914, inclusive. 
Fall plowed. 
Spring plowed. 
Sub- 
Yields, values, etc. (average 
per acre). 
After 
corn 
(1 plat). 
After 
small 
grain 
(4 plats). 
After 
corn 
(1 plat). 
After 
small 
grain 
(17 plats). 
soiled, 
after 
corn 
(1 plat). 
after 
corn 
(1 plat). 
Summer 
tilled 
(1 plat). 
'3 
o 
> 
o 
5q 
o 
S 
O 
03 
> 
o 
o 
ti 
(V 
> 
o 
5 
4 
o 
1 
•i 
O 
> 
o 
CO 
.a 
O 
o 
Yields: 
1909 
Bu. 
23.5 


29.7 
6.5 

10.0 
84.00 
Lbs. 
5,310 
2,760 

3,250 
1,060 
1,350 
Bu. 
19.4 


21.7 
7.8 

Lbs. 
3,365 
1,705 

2, 875 
985 
1,000 
1,655 
Bu. 
24.4 


26.4 
7.8 

Lbs. 
4,560 
3,560 

2,700 
900 
1,150 
Bu. 
18.3 
.1 

20.2 
8.0 

Lbs. 
2,891 
3,014 

2,515 
995 
1,035 
1,742 
Bu. 
20.8 


Lbs. 
4,000 
3,140 

Bu. 
24.8 


27.5 
9.7 

Lbs. 
4,575 
3,800 

2, 150 
800 
1,450 
2,129 
Bu. 
20.8 
14.8 

28.4 
23.6 
14.2 
Lbs. 
4,860 
1910 
2,500 
1911 

1912 
26.3 3.100 
2 750 
1913 
9.4 

1,060 
1,450 
960 
1914 
2,000 
2,288 
8.1 
9.8 
2,145 
7.8 
9.4 
?, 125 
10.3 
17.0 
2,178 
$3. 76 $4. 25 
U. 58 
$3.24 
S3. 31 
$3. 92 $4. 29 
$3.12 
S3. 48 
$4.12 
84 26 
$6.80 
84. 36 
Total Value 
$8.58 
7.49 
$6.55 
7.49 
$8.21 
7.11 
$6.60 
7.11 
$8.01 
8.18 
$8.38 
5.98 
$11.16 
Cost 
12.36 
Profit or loss 
1 09 
- .94 
1.10 
- .51 
- .17 
2.40 
-1.20 
Corn after corn produced more grain and more stover than corn 
after small grain. Little difference is shown in the yields by spring 
plowing and by fall plowing. Each of these methods has been tried 
after both corn and small grain. 
Subsoiling was practiced on land continuously cropped to corn. It 
produced yields practically the same as similarly cropped land plowed 
either in the spring or fall without subsoiling. 
Planting with the lister on land continuously cropped to corn pro- 
duced yields practically the same as those from corn ground plowed 
and surface planted. 
The highest average yield of grain has been from land summer 
tilled the previous year. The increase in the average comes chiefly 
from the grain produced in 1910 and 1914, when other methods 
failed, and to its increase of yield over other methods in 1913. The 
yield of stover from this method does not show an increase over that 
following the several methods by which corn is grown following corn. 
