GRAIN SORGHUMS IN THE TEXAS PANHANDLE. 
21 
Table VIII. — Yields and other agronomic data in date-of -seeding experiments with 
Manchu kaoliang at the Amarillo Cereal Field Station, each year, during the 6-year 
period from 1914 to 1919, inclusive. 
[In the statement of yields per acre the bushel is rated at 58 pounds.] 
Year and time 
of seeding. 
Row space. 
Length of growing 
period. 
a 1 
oUCK- 
ers. 
rieaa- 
cd. 
Height 
of 
plants. 
Grain 
in 
crop. 
Yields per acre. 
Plants. 
Stalks. 
Vege- 
tative. 
r ruit- 
ing. 
Total. 
i oiai 
crop. 
Grain. 
1914: 
Inches. 
Inches. 
Days. 
Days. 
Days. 
89 
TO M 
Jr. Ci, 
. Ct. 
jfeei. 
jp 
Lbs. 
Lbs. 
Bush. 
Early 
7.6 
7.3 
68 
21 
4. 8 
95. 2 
5. 8 
37. 5 
3, 150 
1,180 
20.3 
Normal. . . . 
6.5 
5.1 
60 
20 
80 
21. 9 
97. 5 
5. 3 
35. 1 
3,300 
1,160 
20.0 
0.8 
6.6 
57 
30 
87 
3. 4 
97. 8 
5. U 
oo. o 
4,300 
1,530 
26.4 
1915: 
5.1 
4.4 
71 
42 
113 
14. U 
96. o 
0. U 
ill. y 
8,090 
2,260 
38.9 
Normal 
4.0 
3.8 
67 
36 
103 
4. 3 
92. 9 
6. 5 
2,700 
46.6 
4.2 
3.9 
58 
48 
106 
7. 1 
95. 6 
5. 8 
36. 7 
7,810 
2,870 
49.5 
1916: 
Early 
5.8 
5.2 
76 
20 
96 
9. 8 
43. 6 
3. 8 
o7. 1 
700 
260 
4.5 
Normal 
25.5 
17.7 
70 
27 
97 
30. 8 
86. 2 
4. 
35. 1 
1,080 
380 
6.6 
Late 
9.9 
7.6 
64 
39 
103 
23.4 
80.7 
3.5 
20.6 
970 
200 
3.4 
1917: 
Early 
20.8 
9.6 
83 
16 
99 
54.0 
8L8 
5.3 
15.5 
3,140 
890 
15.3 
Normal 
12.6 
9.2 
83 
21 
104 
27.4 
84.5 
4.8 
5.4 
2,080 
140 
2.4 
Late 
44.1 
20.8 
74 
26 
104 
52.8 
89.2 
5.3 
21.0 
1,580 
500 
8.6 
1918: 
Early 
18.0 
15.6 
91 
32 
123 
13.3 
78.5 
4.0 
2L4 
700 
150 
2.6 
Normal 
5.8 
5.4 
74 
20 
94 
6.7 
68.2 
3.8 
25.0 
720 
180 
3.1 
Late 
10.7 
9.7 
68 
23 
91 
8.8 
78.7 
4.5 
25.0 
1,240 
310 
5.3 
1919: 
Early 
32.6 
13.6 
73 
31 
104 
58.3 
100 
5.3 
29.8 
2,920 
870 
15.0 
Normal 
127.7 
48.9 
69 
28 
97 
6L7 
100 
5.5 
37.0 
1,080 
400 
6.9 
Late 
13.2 
9. 1 
56 
26 
82 
31.8 
100 
5.5 
43.5 
3,860 
1,600 
27.6 
The average number of suckers produced by Manchu kaoHang is 
not as large as in Dwarf milo, feterita, or Dawn kafir. On the half 
of the plats used in this experiment on which good stands were 
obtained, the suckers did not exceed 14 per cent in any one plat. 
In other plats with thin stands larger percentages of suckers were 
produced. 
In the favorable seasons of 1914, 1915, and 1919 more than 92 
per cent of the stalks in each plat produced heads. A much lower 
percentage was produced in the less favorable seasons, reaching a 
minimum of 43.3 per cent in the early seeding in 1916. 
The height of the plants ranged from 3^ feet in the late seeding in 
1916 to 6^ feet in the normal seeding in 1915. The normal seeding 
produced the tallest and the late seeding the shortest plants during 
the 6-year period. 
The heaviest total crop yield, 8,090 pounds, was made by the 
early seeding in 1915, and the lightest, 700 pounds, was made by 
the same seeding in both 1916 and 1918. A study of the averages 
is necessary to determine the best date of seeding. These are pre- 
sented in figure 9 and Table IX. 
COMPARATIVE YIELDS IN DATE-OF-SEEDING EXPERIMENTS. 
Table IX and figures 6 to 9 show the annual and average acre- 
yields from the early, normal, and late seedings of the four varieties 
of grain sorghums used in the date-of-seeding experiments. 
52686°— 21— Bull. 976—^ 
