EFFECTS OF SELECTION ON THE YIELD OF CORN. 9 
Table 1.— Yields of six successive generations of U. S. Selection No. 201 corn, its parent 
varieties, and later crosses between these varieties obtained at Burdette, Ark., in 1921 
Continued. 
SUMMARY OF THE ACTUAL YIELDS. 
Replication. 
What- 
ley. 
St. 
Charles 
St. 
Charles 
White 
No. 201, 
Fi 
(1914 
seed). 
What- 
No. 
201, 
No. 
201, 
No. 
201, 
No. 
201, 
No. 
201, 
No. 
201, 
White. 
What- 
ley. 
Charles 
White. 
F 2 . 
F 3 . 
F<. 
F 5 . 
F«. 
check. 
Pounds per row: 
No. 1 
11.4 
11.4 
12.9 
12.4 
11.9 
11.3 
14.1 
14.8 
14.0 
10.6 
12.3 
13.2 
10.2 
12.2 
12.8 
11.1 
9.5 
10.1 
12.0 
6.5 
10.6 
10.5 
8.9 
10.8 
12.7 
14.4 
10.4 
12.6 
No. 2 
14.1 
No. 3 
9.6 
No. 4 
13.3 
10.5 
11.9 
13.8 
13.1 
9.0 
14.8 
14.8 
7.8 
6.0 
No. 5 
13.3 
9.8 
10.5 
7.1 
11.4 
10.6 
10.8 
10.5 
9.6 
12.0 
No. 6 
13.6 
10.6 
9.4 
15.8 
14.2 
11.8 
13.0 
12.9 
10.4 
11.2 
No. 7 
12.2 
10.1 
11.3 
9.8 
9.2 
8.2 
11.5 
9.4 
11.3 
9.1 
No. 8 
14.9 
11.2 
13.0 
12.2 
11.8 
11.6 
10.8 
10.1 
13.6 
10.8 
No. 9 
10.4 
12.4 
11.1 
11.7 
12.7 
7.9 
13.3 
12.3 
12.9 
13.0 
No. 10 
10.5 
10.4 
12.9 
9.2 
14.0 
10.1 
14.1 
11.9 
10.8 
12.6 
No. 11 
14.4 
10.4 
14.2 
14.7 
12.2 
10.9 
13.8 
12.9 
9.5 
9.0 
No. 12 
12.6 
11.6 
14.0 
13.1 
9.5 
9.0 
11.8 
11.8 
10.8 
7.4 
No. 13 
15.4 
12.2 
13.8 
9.9 
13.7 
9.9 
8.6 
10.5 
10.5 
9.2 
10.2 
No. 14 
10.2 
10.0 
13.7 
13.8 
10.6 
8.2 
8.2 
11.5 
11.2 
9.1 
10.3 
No. 15 
10.6 
12.0 
14.2 
13.4 
16.6 
7.0 
10.4 
10.7 
10.3 
10.4 
7.9 
No. 16 
10.6 
11.6 
13.9 
11.5 
13.7 
9.7 
13.5 
11.7 
9.7 
10.6 
9.3 
No. 17 
11.1 
11.9 
13.9 
4.2 
14.4 
13.0 
11.8 
11.9 
11.2 
11.4 
10.4 
No. 18 
13.0 
7.2 
11.7 
9.0 
17.2 
12.5 
11.0 
10.2 
12.5 
14.2 
11.7 
No. 19 
15.0 
7.8 
11.6 
11.7 
14.6 
11.3 
10.4 
8.9 
11.9 
12.5 
11.2 
No. 20 
13.4 
10.7 
8.4 
12.1 
15.2 
11.6 
10.1 
9.1 
12.1 
13.6 
9.5 
No. 21 
14.1 
14.5 
10.7 
7.7 
9.1 
9.2 
9.8 
11.3 
13.1 
15.0 
8.2 
No. 22 
16.0 
14.1 
11.9 
10.7 
6.6 
11.3 
10.0 
14.2 
11.4 
13.2 
10.4 
Average.../ 
12.7 
11.1 
12.5 
10.4 
12.5 
11.2 
10.2 
11.5 
11.4 
11.5 
10.3 
±.26 
±.25 
±.25 
±.61 
±.42 
±.28 
±.20 
±.28 
±.21 
±.29 
±.29- 
Bushels per acre: 
Average... | 
73.48 
64.22 
72.32 
60.17 
72.32 
64.80 
59.01 
66.54 
65.96 
66.54 
59.59- 
±1.50 
±1.45 
±1.45 
±3.53 
±2.43 
±1.62 
±1.16 
±1.62 
±1.21 
±1.68 
±1.68 
Summary of the Relative Yields. 
Pounds per row: 
No. 1 
15.6 
11.3 
14.0 
12.7 
11.9 
11.7 
10.9 
9.4 
11.7 
10.6 
No. 2 
10.7 
12.3 
11.4 
*z 
13.5 
12.7 
9.9 
12.4 
12.8 
10.7 
11.5 
No. 3 
12.6 
10.6 
14.8 
11.6 
11.5 
8.9 
9.6 
10.7 
12.7 
10.9 
No. 4 
13.7 
11.9 
11.8 
10.1 
9.6 
10.2 
13.3 
12.0 
12.8 
8.2 
No. 5 
9.7 
11.1 
13.7 
11.7 
11.5 
10.2 
12.6 
13.5 
13.6 
10.6 
No. 6 
11.8 
10.8 
13.8 
13.9 
11.4 
9.6 
11.6 
12.0 
12.3 
10.1 
No. 7 
12.1 
8.0 
12.9 
13.5 
11.7 
11.1 
11.5 
10.8 
8.0 
9.R 
No. 8 
11.2 
10.5 
12.7 
13.1 
11.4 
9.5 
11.4 
10.2 
11.9 
10.6 
No. 9 
12.2 
11.2 
11.5 
14.4 
11.1 
9.7 
14.8 
10.2 
11.3 
13.1 
No. 10 
15.3 
11.7 
12.2 

10.4 
9.8 
9.2 
14.6 
9.7 
9.2 
9.5 
No. 11 
13.2 
9.8 
12.7 
15.0 
11.5 
9.2 
11.2 
9.3 
11.1 
8.4 
No. 12 
12.2 
11.6 
13.0 
11.4 
12.8 
9.9 
13.9 
10.2 
12.3 
10.3 
No. 13 
13.6 
10.5 • 
12.3 
12.1 
12.1 
14.2 
9.9 
9.8 
12.6 
12.3 
10.0 
No. 14 
13.9 
11.1 
12.4 
9.9 
14.0 
12.4 
8.4 
10.1 
13.0 
11.9 
9.1 
No. 15 
11.5 
11.3 
9.1 
13.9 
15.7 
11.3 
11.0 
12.1 
9.6 
12.4 
10.9 
No. 16 
11.0 
10.4 
11.7 
12.1 
11.3 
12.6 
8.0 
14.1 
11.7 
11.2 
9.2 
No. 17 
11.4 
10.2 
12.6 
12.0 
15.4 
12.7 
9.9 
11.4 
11.7 
12.4 
9.5 
No. 18 
13.8 
11.5 
13.7 
12.8 
14.4 
12.2 
12.7 
10.1 
10.4 
10.4 
9.9 
No. 19 
12.0 
9.8 
12.2 
10.6 
9.7 
13.2 
7.1 
11.6 
12.4 
12.6 
9.6 
No. 20 
11.8 
14.3 
14.0 
9.1 
12.8 
9.3 
8.3 
11.5 
10.8 
10.6 
7.6 
No. 21 
13.7 
11.3 
13.0 
6.2 
9.5 
10.0 
9.3 
10.2 
10.3 
10.3 
14.0 
No. 22 
13.2 
12.2 
13.0 
12.1 
11.0 
13.1 
10.6 
12.7 
11.9 
12.6 
9.2 
Average... | 
12.55 
11.06 
12.66 
11.08 
12.60 
11.72 
9.74 
11.88 
11.15 
11.56 
10.11 
±.21 
±.17 
±.17 
±.47 
±.27 
±.18 
±.18 
±.22 
±.18 
±.19 
±.21 
Bushels per acre: 
Average... J 
72.61 
63.99 
73.25 
64.11 
72.90 
67.81 
56.35 
68.73 
64. 51 
66. ^S 
58.49 
±1.21 
±.98 
±.98 
±2.72 
±1.56 
±1.04 
±1.04 
±1.27 
±1.04 
±1.10 
±1.21 
The yield data obtained are shown in Table 1. The field-row 
numbers in this table in connection with the designation of the seed 
planted show the order of planting. No correction was made for 
stand in the case of rows having 19 plants instead of the full quota 
63887- 
