TESTS OF COEN VARIETIES ON THE GEEAT PLAINS. 
17 
Table Y1.— Yield of corn varieties grown at Akron, Colo., by plats, at three different 
rates of planting per hill, for the year 1912. 
Variety. 
Plat 
No. 
Yield 
of ears. 
Plat 
No. 
Yield 
of ears. 
Plat 
No. 
Yield 
of ears. 
Plat 
No. 
Yield 
of ears. 
Number of plants per hill. 
Swadley 
White Australian (N. Mex.) 
Swadley 
White Australian (Colo.) — 
Swadley 
Cassia County Flint 
Swadley 
Kiabab Flint 
Swadley 
Gehu Flint 
Swadley 
Red Squaw 
Swadley 
Brown County Yellow 
Swadley 
Minnesota 23 
Swadley 
Minnesota 13 
Swadley 
U. S. Selection 133 
Golden Glow 
Swadley 
U. S. Selection 160. . 
Swadley 
North Platte Calico. 
Swadley 
Pounds. 
39.2 
40.2 
30.6 
47.2 
32.4 
26.9 
36.4 
42.5 
33.6 
30.9 
33.0 
39.0 
34.8 
32.0 
34.0 
30.8 
38.3 
42.5 
41.5 
43.5 
33.9 
45.5 
38.7 
27.0 
34.9 
40.2 
35.5 
Pounds. 
40.4 
43.0 
45.3 
48.0 
43.0 
44.0 
26.1 
42.5 
23.4 
38.0 
34.7 
36.2 
29.7 
41.0 
30.8 
43.4 
48.0 
35.8 
31.5 
35.0 
50.7 
40.5 
45.0 
43.8 
42.5 
47.6 
Pounds. 
34.4 
34.3 
34.4 
44.6 
32.6 
36.2 
31.8 
42.2 
33.4 
33.0 
33.6 
43.0 
30.0 
28.3 
31.0 
30.0 
33.6 
34.9 
32.6 
35.0 
35.3 
39.0 
33.0 
24.4 
33.0 
34.5 
27.4 
Summary Showing the Relative Rank and Class of Each Variety. 
Variety. 
Yield per acre 
(bushels). 
Rank. 
Class. 
Variety. 
Yield per acre 
(bushels). 
Rank. 
Class. 
Number of plats 
averaged 
Number of plants 
per hill 
1 
1 
2 
2 
1 
3 
2 
2 
2 
2 
Number of plats 
averaged 
Number of plants 
per hill 
1 
1 
ITo" 
35.5 
30.0 
31.5 
2 
2 
1 
3 
2 
2 
2 
Minnesota 23 
Minnesota 13 
U.S. Selection 133. 
Golden Glow 
U. S. Selection 160 
White Australian 
(N. Mex.) ... 
38.0 
46.5 
32.0 
43.0 
32.5 
41.5 
30.5 
46.0 
'44.' 6' 
36.5 
7 
1 
10 
2 
9 
4 
12 
2 
1 
3 
1 
3 
1 
3 
31.0 
39.5 
40.0 
43.0 
26.0 
38.0 
34.5 
35.5 
41.0 
44.5 
48.5 
11 
6 
5 
3 
13 
7 
8 
3 
1 
White Australian 
(Colo.) 
43.0 
1 
1 
Cassia County 
Flint 
3 
North Platte 
Calico . ... 
Kiabab Flint 
2 
Gehu Flint .. 
Swadley (average 
of 14 checks). . . . 
Red Squaw 
44.0 
26.5 
2 
Brown County 
Yellow 
SUMMARY OF TESTS. 
Small differences are of importance only when it is certain that 
such differences are due to potential varietal qualities and not chance 
fluctuations. On account of seasonal fluctuations and the difficulty 
of eliminating experimental error, it is not possible from the results 
of one or a few tests to determine to what causes small differences are 
due. In preliminary and short-time trials only differences of con- 
siderable amount should be taken into account. These indicate in a 
general way the comparative adaptability of varieties to the condi- 
tions of the test. In districts such as the Great Plains area^ where 
