GRAIN-SORGPIUM EXPERIMENTS IN OKLAHOMA. 
45 
Table 17. — Agronomic data in the datc-of -seeding experiments with Sunrise l:afir at the 
Woodward Field Station during the 5-year period from 1917 to 1921, inclusive. 
[In the statement of yields of grain per acre the bushel is rated at 60 pounds.] 
Date of 
seeding. 
Row space. Length of period. 
Plant. 
blalJi - tative. 
Fruit- 
ing. 
Total. 
Stalks Stalks 
per head- 
plant, ed. 
Height 
of 
plants. 
Yield per acre. 
Grain 
in 
cr °P" Total, 
crop. 
Grain. 
In. 
7.44 
6.59 
5.80 
11.79 
17.20 
11.08 
13.42 
0) 
C 1 ) 
180.0 
21.07 
May 14 16.57 
1916: 
Mavl.... 
May 15... 
June 1 
1917: 
Apr. 16... 
May 2 
May 15.... 
June 2 
June 22.... 
July 3 
1918: 
Apr. 16.... 
May 1. 
June 1 
June 15 
Julyl 
1919: 
Apr. 15 
Apr. 30 
May 14 
May 31 
June 14 
June 30 
1920: 
Apr. 15 
Mavl 
May 17 
June 1 
June 15 
Julyl 
1921: 
Apr. 18 
Apr. 30 
May 16 
June 1 
June 15 
Julyl 
5-year average, 
1917 to 1921: 
Apr. 16 
Mavl 
May 15 
June 1 
June 15 
Julyl 
16.29 
15.83 
15.92 
16.74 
19. 32 
13. IS 
13. 76 
12.17 
12.79 
20.35 
12.76 
11.54 
12.60 
12.32 
11.94 
12.50 
14.89 
14.66 
11.22 
12.69 
12.46 
15.88 
17.05 
13.41 
13. 46 
U3.25 
<13.28 
In. 
5.98 
6.46 
5.70 
4.45 
5.61 
4.43 
7.40 
0) 
C 1 ) 
62.38 
10.10 
7.54 
12.12 
14.27 
13.80 
13.30 
14.30 
6.98 
11.00 
7.18 
7.25 
10.69 
4.81 
4.30 
6.35 
7.20 
9.90 
9.47 
7.26 
10.52 
7.51 
20.16 
8.86 
6.10 
8.79 
<9.79 
<9.62 
Days. 
"74 
78 
67 
118 
102 
108 
91 
87 
81 
88 
72 
80 
93 
105 
91 
82 
68 
62 
68 
97 
84 
75 
67 
Days. Days. 
39 
113 
1.24 
31 
109 
1.02 
45 
112 
1.02 
61 
179 
2.66 
61 
163 
3.07 
42 
150 
2.50 
41 
132 
1.82 
25 
2 112 
C 1 ) 
20 
2 101 
C 1 ) 
127 
112 
119 
105 
139 
133 
139 
124 
110 
101 
97 
103 
137 
121 
106 
105 
114 
121 
115 
110 
106 
105 
119 
141 
127 
119 
110 
113 
111 
3.02 
2.08 
2.20 
1.35 
1.11 
1.15 
P.ct. 
75.9 
77.5 
73.9 
95.7 
97.3 
96.4 
97. .7 
( l ) 
0) 
94.7 
80.9 
58. 4 
79.3 
68.2 
47.7 
1.26 
90.3 
1.35 
85.7 
1.89 
89.3 
1.25 
91.7 
1.70 
88.5 
1.77 
84.9 
1.91 
97.0 
2.65 
91.2 
2.68 
93.6 
1.99 
94.4 
1.71 
94.1 
1.21 
89.4 
1.26 
91.9 
1.57 
97.0 
2*02 
94.5 
1.58 
96.0 
1.21 
93.4 
1.66 
87.1 
2.02 
93.9 
2.15 
90.4 
2.26 
86.4 
1.60 
91.8 
U.43 
<86.1 
<1.45 
<77.3 
Fed. 
5.5 
4.5 
4.5 
5.5 
5.8 
6.0 
6.0 
6.0 
5.0 
4.8 
4.5 
4.5 
3.8 
4.0 
6.0 
5.5 
5.3 
5.0 
5.0 
6.0 
6.5 
6.0 
6.2 
5.9 
6.3 
6.0 
6.2 
6.5 
6.1 
5.7 
5.9 
5.8 
5.7 
5.6 
5.6 
5.3 
5.6 
P.ct. 
20.4 
14.6 
12.4 
23.2 
20.0 
20.7 
23.1 
15.4 
8.2 
21.7 
20.6 
11.8 
23.8 
18.5 
13.3 
17.6 
25.5 
33.3 
32.8 
28.5 
28.0 
21.8 
22.2 
30.3 
26.8 
34.9 
32.6 
43.0 
43.1 
31.4 
36.8 
Lbs. 
Lbs. 
4,700 
960 
4,331 
630 
4,444 
551 
6, 975 
1,620 
7,256 
1.451 
8,438 
1,744 
6,863 
1,586 
5, 625 
5,344 
675 
1,969 
3,094 
2.194 
1,286 
1,519 
3,206 
2,756 
4,838 
4,556 
4,894 
5,175 
4,388 
6,225 
7,575 
6,375 
6,450 
4,275 
4,106 
4,274 
6,600 
5,700 
42.0 33,750 
29.2 4,875 
25.5 
26.3 
25.5 
28.7 
27.9 
22.3 
3,870 
4,496 
6,109 
5,138 
4,401 
4,238 
439 
Bush. 
16.0 
10.5 
9.2 
27.0 
24.2 
29.1 
26.4 
14.4 
7.3 
146 
2.4 
405 
6.7 
366 
6.1 
523 
8.7 
238 
4.0 
203 
3.4 
585 
703 
1,609 
1,501 
1,395 
1,451 
956 
1,380 
2,295 
1,710 
2,250 
1,395 
1,766 
1,841 
2,070 
2,100 
1,575 
1,425 
1,015 
1,156 
1,617 
1,484 
1,265 
983 
9.7 
11.7 
26.8 
25.0 
23.3 
24.2 
15.9 
23.0 
38.3 
28.5 
37.5 
23.3 
29.4 
30.7 
34.5 
35.0 
26.3 
23.7 
16.9 
19.3 
27.0 
24.7 
21.1 
16.4 
1 Counts not made, the crop being immature when harvested. 
2 About 20 per cent of, the June 22 seeding and 5 per cent of the July 3 seeding was ripe at the time of the 
first frost on Oct. 12. 
3 The crop from the June 15 date in 1921 was blown down badly by a windstorm, and much fodder was left 
in the field. 
4 Average for 4 years only. 
Sunrise kaflr sown on May 15 has produced the highest number of 
suckers per plant, though its stand was practically as thick as that of 
any of the other dates. Figure 14 shows the relation between the date 
of seeding and the percentage of suckers. In the five years the May 15 
seeding has averaged one plant to each 13.41 inches of row space and 
has produced an average of 1.26 suckers per plant; the plat sown on 
May 1 has averaged one plant to each 17.05 inches and has produced 
1.15 suckers per plant; and the June 1 seeding has averaged one 
plant to each 13.46 inches and produced but 0.6 sucker per plant. 
It appears that growing conditions for Sunrise kaflr sown about May 
15 are such as to cause the plants to produce a high percentage of 
