TILLAGE AND ROTATION EXPERIMENTS, NORTH DAKOTA 7 
The yields of all crops except corn averaged higher at Dickinson 
than at either of the other stations. The average yields of ear corn 
were practically the same at Dickinson and at Williston, but the 
yield of stover was somewhat higher at Dickinson. At Hettinger, 
beginning with 191-1. the corn was harvested for silage and weighed 
green. The two crops obtained before that have been calculated to 
the same basis. The yields of corn at this station are the wet weights 
of the crop as harvested for silage and are not directly comparable 
with those from the other stations. The yields of corn at Dickinson 
and AVilliston are given as grain and as fodder, which is the total 
weight of ears and stover. 
Table 5. — Average animal yields from all plats in the dry-land rotations at 
Williston, V. Dak., for the 12-year period from 1909 to 1920, inclusive 
Wheat 
Oats 
Barley 
Corn 
Flax 
Bromegrass > 
Year 
Grain 
Fodder 
Second Third 
year year 
1909 
Bushels 
27. 5 
1.8 
4.6 
37.0 
15.2 
25.7 1 
24.1 
27.7 
10.3 
4.2 
4.0 
10.9 
Bush (Is 
65.3 
3.5 
11.0 
63.2 
37.8 
71.0 
46.1 
70.8 
17. 1 
6.4 
6.0 
22.1 
Bushels 
43.4 
1.4 
6.1 
■ 42.6 
19.1 
36.7 
27.9 
40.5 
12.2 
3.5 
4.1 
14.5 
Bushels 
18.5 



25.4 
45.1 

44.3 
5.1 
18.6 
9.7 
2.1 
Pounds 
6,718 
1,791 
3,574 
( 2 ) 
( 2 ) 
7,639 
2,419 
7,268 
2,919 
5,807 
2.778 
1,910 
Bushels 
12.2 

.9 
11.4 

8.9 
7.0 
11.8 

2.1 
3.4 
3.2 
Pounds Pounds 
1910 

1911 
630 
1912 
1, 255 : 1, 840 
1913 
830 290 
1914 _ . 
570 
1915 
650 i 495 
1916 
1,945 , 1,355 
1917 
51 ii i ' 410 
1918 
735 900 
1919 

1920 
465 660 
Average 
16.1 
35.0 
21.0 
14.1 
4,282 
5.1 
580 1 650 
1 Slender wheatgrass beginning with 1915. 
2 Yield of fodder heavy, but weights as determined not considered reliable. Not included in calculating 
the average. 
RESULTS WITH FALL PLOWING AND SPRING PLOWING COMPARED 
The three stations permit several comparisons of the yields of 
small grains and corn on fall-plowed and on spring-plowed land. 
The average yields of the several crops with the two methods of 
preparation at each of the stations are assembled in Table G and 
shown graphically in Figure 3. 
Table 6. — Average yields of wheat, oats, barley, and com on spring-plowed 
and on fall-plowed plats at Dickinson, Hettinger, and Williston, X. Dak., foi 
the periods specified 
Crop and unit of measure 
Wheat 
Oats 
Barley 
Corn: 
Grain 
Fodder 
do.... 
do.... 
pounds.. 
Dickinson, 
1908 to 1923 
Hettinger. 
1912 to 1922 
Williston, 
HUD t<> L920 
Spring 
plowed 
16.2 
35. 1 
21.2 
1 5. 1 
707 
Fall 
plowed 
16.5 
33. 5 
20.4 
15. 1 
Spring 
plov ed 
11.6 
29.0 
21.0 
0) 
6, 004 
Fall 
plowed 
10. 5 
25.6 
20.6 
0) 
6, 344 
Spring Fall 
plowed plowed 
14. 1 
31. 4 
14.2 
13.2 
3,514 
13.9 
28.2 
12. 7 
13.8 
542 
1 Corn yields at Hettinger are green weights as put into the silo, and averages are for the nine yea>- 
from 1914 to 1922, inclusive. 
