CORN IN THE GREAT PLAINS AREA. 
21 
No one of the six methods other than summer tillage maintained a 
position as either the best or poorest throughout the three years. 
The greatest profit, $9.64 per acre, was from corn on land that was 
summer tilled the preceding year. A profit nearly as great, $9.43 
per acre, was realized from corn by spring plowing following small 
grain. An average profit of $8.06 per acre was realized from corn fol- 
lowing corn by fall plowing. Subsoiling after corn, fall plowing after 
small grain, listing after corn, and spring plowing after corn show 
profits ranging from $7.10 to $7.88 per acre. 
NORTH PLATTE FIELD STATION. 
The results of eight years are available for study from the field sta- 
tion at North Platte, Nebr. A study of Table XII shows that this 
station has produced four good crops of corn. In two other years 
the average yields were low, but good yields were produced by some 
methods. In the remaining two years some corn was produced but 
not enough to warrant husking. The average for eight years shows 
that there is very little choice to be made between fall and spring 
plowing, nor were wide differences manifested in the results by these 
methods in any of the years comprising the series. 
Table XII.— Yields and cost of production of corn by different methods at the North 
Platte Field Station, 1907 to 1914, inclusive. 
Fall plowed. 
Spring plowed. 
Yields, values, etc. 
(average per acre). 
After corn (1 
plat). 
After small 
grain (9 plats). 
After corn (1 
plat). 
After small 
grain (9 plats). 
(1 plat). 
'a 
O 
o 
5 
i 
o 
> 
O 
B 
03 
Si 
o 
03 
> 
s 
i 
c3 
o 
> 
o 
1 
> 
B 
Yields: 
1907 
Bush. 
27.7 
24.6 
31.6 
6.2 

39.9 

15.5 
Lbs. 
4,360 
2,660 
2,790 
2,500 
580 
2,330 
1,780 
2,060 
Bush. 
19.0 
27.4 
26.1 
2.6 

26.1 

3.9 
Lbs. 
4,529 
3,143 
2,354 
1,200 
755 
2,165 
1,540 
1,458 
Bush. 
28.7 
38.6 
29.0 
8.9 

34.1 

8.5 
Lbs. 
4,680 
3,250 
2,470 
2,440 
980 
2,340 
1,740 
1,600 
Bush. 
19.9 
24.0 
25.8 
5.8 

26.0 

3.2 
Lbs. 
4,609 
3,463 
2,613 
1,633 
746 
2,734 
1,503 
1,156 
Bush. 
17.9 
38.2 
25.0 
21.9 

35.1 

27.9 
Lbs. 
4,920 
3,530 
2,300 
3,300 
1908 
1909 
1910 
1911 
1912 
930 
2,340 
2,240 
2,130 
1913 
1914 
Average 
18.2 
2,383 
13.3 
2,143 
18.5 
2,438 
13.2 
2,307 
20.8 
2,711 
Value 
87. 28 
$4.77 
$5.32 
$4.29 
$7.40 
$4.88 
$5.28 
$4.61 
$8.32 
$5.42 
Total value 
812.05 
7.49 
$9.61 
7.49 
$12. 28 
7.11 
$9.89 
7.11 
$13. 74 
Cost 
12.36 
Profit 
4.56 
2.15 
5- 17 
2 78 
1.38 
From differences in crop sequence marked results have been 
obtained. Corn grown continuously on the same land has averaged 
about 5 bushels per acre more by both fall and spring plowing than 
when grown on small-gram stubbie. The average increase in yield 
