54 
BULLETIN 1175, U. S. DEPARTMENT OF AGRICULTURE. 
Table 23. — Data in the spacing experiments with Dwarf Yellow milo grown in rows 44 
inches apart at the Woodward Field Station riming the 5-year period from 1917 to 1921 
inclusive. 
[In the statement of yields of grain per acre the bushel is rated at 58 pounds.] 
Year and late No. 
1917: 
Ratel 
Rate3 
Rate5 
Rate7 
Rate9 
1918: 
Ratel 
Rate3 
Rate 5 
Rate? 
Rate 9 
1919: 
Ratel 
Rate 3 
Rateo 
Rate 7 
Rate9 
1920: 
Ratel 
Rate3 
Rateo 
Rate? 
Rate 9 
1921: 
Ratel 
Rate 3 
Rateo 
Rate? 
Rate 9 
5-vear average, 1917 
to 1921: 
Ratel 
Rate 3 
Rateo 
Rate7 
Rate9 
Row space. 
Plant. Stalk. 
Inches. Inches 
14.4-0 
19.88 
25.02 
28.28 
8.04 
13.77 
22.30 
24.82 
30. G4 
5.93 
12.06 
18.08 
23.92 
28.96 
6.12 
12.30 
18.30 
24.18 
29.61 
6.00 
12.03 
18.00 
23.97 
30.23 
7.20 
12.91 
19.31 
24.38 
29.54 
6.78 
7.26 
7.79 
8.43 
5.44 
7.32 
9.34 
8.01 
9.43 
5.15 
6.07 
8\69 
9.54 
10.27 
4.40 
5.18 
5.35 
6.93 
4.55 
4.92 
6.14 
7.56 
9.90 
5.14 
0.05 
7.36 
7.97 
9.39 
Stalks 
per 
plant. 
1.61 
2.12 
2.74 
3.23 
3.36 
1.48 
1.88 
2.89 
3.02 
3.25 
1.15 
1.99 
2.11 
2.51 
2.82 
1.39 
2.37 
3.42 
3.65 
3.33 
1.32 
2.44 
2.93 
3.17 
3.06 
1.39 
2. 16 
2.82 
3.11 
3.16 
Total 
Grain 
Stalks 
headed. 
Erect 
heads. 
grow- 
ing 
period. 
Height. 
in 
total 
crop. 
Per ct. 
Perct. 
Days. 
Feet. 
Per ct. 
86.1 
48.6 
139 
3.3 
27.0 
83.6 
51.5 
139 
3.0 
22.6 
90.0 
50.6 
139 
4.0 
27.2 
85.8 
52.6 
139 
3.5 
25.7 
87.8 
46.0 
139 
3.0 
27.2 
38.6 
100.0 
96 
3.3 
6.1 
41.8 
100.0 
96 
3.5 
8.3 
75.0 
100.0 
96 
3.5 
10.8 
58.0 
100.0 
96 
3.5 
9.3 
41.8 
100.0 
96 
3.5 
5.5 
88.4 
99.7 
114 
4.0 
28.3 
64.2 
99.9 
115 
3.5 
23.1 
76.9 
96.7 
117 
3.3 
24.9 
98.0 
93.5 
125 
3.3 
33.3 
96.1 
95.8 
125 
3.3 
30.3 
76.2 
99.6 
104 
3.9 
23.4 
87.2 
99.5 
108 
3.7 
24.5 
92.8 
98.8 
111 
3.S 
22.5 
96.4 
94.9 
111 
4.0 
27.4 
95.5 
96.1 
111 
3.6 
26.8 
91.5 
95.9 
106 
4.8 
32.6 
93.9 
69.9 
109 
5.0 
38.2 
97.8 
57.8 
109 
5.0 
40.7 
98.3 
51.0 
109 
4.5 
44.7 
98.9 
«., 
109 
4.3 
44.3 
76.2 
88.8 
112 
3.9 
23.5 
74.1 
84.2 
113 
3.7 
23.3 
86.5 
80.8 
114 
3.9 
25.2 
87.3 
78.4 
116 
3.8 
28.1 
84.0 
76.4 
116 
3.5 
26.8 
Yields per acre. 
Total 
crop. 
Grain. 
Lbs. 
4,500 
4,600 
5,400 
4,550 
4,100 
2,325 
1,450 
2,400 
2,050 
1,450 
5, 670 
4,250 
3,500 
5,250 
4,450 
Lbs. 
1,215 
1,040 
1,470 
1,170 
1,220 
143 
120 
260 
190 
870 
1,750 
1,350 
6,975 1,629 
6,814 1,671 
9,129 i 2,057 
7,971 2,186 
7,393 1,980 
7,290 
7,843 
7,329 
6,236 
5,657 
5,352 
4,991 
5,552 
5,211 
4,610 
2,376 
2,996 
2,983 
2,790 
2,533 
1,393 
1,361 
1,528 
1,617 
1,433 
Bush. 
20.9 
17.9 
25.3 
20.2 
21.0 
2.5 
2.1 
4.5 
3.3 
1.4 
27.0 
16.9 
15.0 
30.2 
23.2 
28.1 
28.8 
35.5 
37.7 
34.1 
41.0 
51.6 
51.4 
48.1 
43.7 
24.0 
23.5 
26.3 
27.9 
24.7 
The percentage of grain in the total crop and the yields in both 
pounds and bushels to the acre are given in Table 23. In grain yields 
the different rates have varied greatly in any one year and even more 
between years. In 1917 and 1918 rate 5, one plant to each 18 inches, 
made the highest grain yield for the 44-inch rows. In 1919 and 1920 
rate 7, one plant to each 24 inches, made the highest grain yield, 
while in 1921 rates 3 and 5 made the highest yields. 
Table 24 shows the annual and average acre yields from the different 
rates of Dwarf Yellow milo in rows spaced 44 inches apart during the 
5-year period from 1917 to 1921, inclusive. In this table the extreme 
row space per plant for the five years is indicated. As noted, no one 
rate of spacing has given the highest yields in each of the five years. 
The best spacing between plants in the row must be determined from 
the average yield for the period. Rate 7, one plant each 24 inches, 
made the highest average grain yield for the five years, 27.9 bushels 
to the acre. The next highest yield, 26.3 bushels, was produced from 
what was intended to be the 18-inch spacing, but which actually 
varied from 18 to 22 inches. The lowest average grain yield was 
made by rate 3, one plant each 12 inches, with a 5-year average of 
23.5 bushels to the acre. The 6-inch and 30-inch spacings yielded 
