GRAIN SORGHUMS IN THE TEXAS PANHANDLE. 
35 
plant, was obtained each year. The 6-inch rate is missing in 1918, 
and the 10 to 15 inch rate was omitted m 1914. In the 4-year period, 
which includes four rates, the average is in favor of the 8 to 9 inch 
rate, but in the two 5-year periods and one 6-year period it favors the 
6-inch rate. This indicates that 6 inches of row space to the plant in 
rows spaced 7 feet apart is probably the best rate. 
COMPARATIVE YIELDS FROM 3^-FOOT AND 7-FOOT ROWS. , 
I 
Table XIX shows the annual and average acre jdelds of Dawn 
kafir in 3^-foot and in 7-foot rows in the spacing experiments, so 
that comparisons between the spacings may be easily made. 
Table XIX. — Annual and average yields of Dawn Icajfir in the spacing experiments at the 
Amarillo Cereal Field Station during the 6-year period from, 1914 to 1919, inclusive. 
[In the statement of yields per acre the bushel is rated at 60 pounds.] 
Approximate 
number 
of plants per 
acre. 
S^ace 
tween 
rows. 
Row 
space 
per 
plant. 
Annual yields per acre. 
Average yields per acre. 
1914 
1915 
1916 
1917 
1918 
1919 
3 
years, 
1915, 
1917, 
and 
1919. 
years, 
1915 
to 
1918. 
5 
years, 
1914 
to 
1916, 
1918, 
1919. 
years, 
1914, 
1915, 
1917 
to 
1919. 
5 
years, 
1915 
to 
1919. 
6 
years, 
1914 
to 
1919. 
Group A, 24,000 
plants 
Feet. 
{ f 
{ f 
{ f 
{ f 
{ f 
Inches. 
6-7 
2-3 
8-10 
4-5 
11-13 
6 
15-19 
8-9 
21-26 
10-15 
Bu. 
8.7 
Bu. 
60.2 
47.7 
69.0 
48.0 
68.3 
49.7 
62.7 
43.8 
55.5 
40.8 
Bu. 
1.0 
1.7 
Bu. 
14.8 
17.7 
12.2 
21.7 
Bu. 
0.7 
1.9 
1.8 
3.0 
.7 
1.2 
3.3 
3.0 
Bu. 
38.8 
Bu. 
37.9 
Bu. 
19.2 
17.3 
Bu. 
21.9 
Bu. 
24.6 
Bu. 
23 A 
Bu. 
20.7 
Group B, 18,000 
plants 
Group C, 12,500 
plants 
18.5 
25.0 
18.7 
23.5 
19.0 
18.2 
25.4 
37.1 
32.3 
31.5 
32.8 
27.3 
29.7 
23.7 
35.5 
35.6 
25.4 
27.0 
■ 8.5 
5.8 
10.7 
3.8 
5.3 
20.3 
24.3 
25.2 
23.3 
24.3 
19.5 
23.7 
23.9 

Group D, 9,000 
plants 
Group E, 7,000 
plants 
17.8 
33.8 
26.8 
25.5 
37.8 
37.7 
37.3 
30.0 
21.9 
21.5 
27.1 
25.2 
24 1 
22.6 
23.2 
21.9 
6.2 
1.2 
18.4 
19.5 
Group A represents a rate of 6 to 7 inches of row space to the 
plant in rows 3^ feet apart and 2 to 3 inches where the rows are 7 
feet apart, or an average of approximately 24,000 plants to the acre. 
At this rate the methods are comparable in only four years, and in 
that period the average yield is in favor of the rows 3| feet apart. 
Group B has a stand of 8 to 10 inches in rows 3^ feet apart and 
its equivalent in rows 7 feet apart, or approximately 18,000 plants 
to the acre. This rate shows a small difference in the average yields 
in favor of rows spaced 7 feet apart in the 3-year and the 5-year 
periods for which averages are possible. 
Group C has a plant space of 11 to 13 inches in rows spaced 3i 
feet apart and of 6 inches in rows spaced 7 feet apart, or an average 
of approximately 12,500 plants to the acre. These rates were obtained 
in only five years and in that period the average yield is in favor of 
the rows spaced 3^ feet apart. 
Group D represents a stand of 15 to 19 inches of row space to the 
plant where the rows are spaced feet apart, and 8 to 9 inches with 
