22 
BULLETIN 1175, U. S. DEPARTMENT OF AGRICULTURE. 
The average row space per plant of feterita is greater than for milo. 
The feterita produced enough suckers to make the row space per 
stalk less than standard milo and identical with that of the dwarf 
milos. The total crop yield of feterita has been less than that for 
milo, but the grain yields have averaged practically the same. The 
percentage of seed in the total crop, therefore, is higher for feterita 
than for milo. 
Spur feterita has been grown in these experiments for 3 }'ears, 
1919 to 1921, inclusive. During these 3 years it has had an average 
growing period of 107 days, made up of a vegetative period of 73 
days and a ripening period of 34 days, as compared with 99 days 
total growing period, 67 days vegetative period, and 32 days ripening 
period for ordinary feterita. The Spur variety has averaged 21 fewer 
suckers to 100 plants than the C. I. No. 182, though the row space per 
plant was 3.6 inches greater for Spur than for the other variety. 
"In grain yields ordinary feterita has outyi elded Spur in each of the 
three years, the averages being 36.6 and 34.2 bushels to the acre, re- 
spectively. In view of the variation in stands between the two 
varieties this difference of yield can not be regarded as significant. 
WHITE DURRA. 
p One selection of White durra was grown in these experiments during 
the first three years, after which it was discarded because of its unde- 
sirable characters. The grain shatters easily, and the abundant 
pubescence and awns make the crop disagreeable to handle. The 
data on White durra for the three years are presented in Table 7. 
Table 8. — Yields of the varieties and races of the milo-durra group of grain sorghums 
grown at the Woodward Field Station during the 8-year 'period from 1914 to 1921* 
inclusive. 
Yields 
per acre (58-pound bushels) 
Variety and C. I. 
No. 
1914 
1915 
1916 
1917 
1918 
1919 
1920 
1921 
Average. 
3 rears, 
1914 to 
1916. 
2 years, 
1920 
and 
1921. 
3 years. 
1919 to 
1921. 
8 years, 
1914 to 
1921. 
Standard Yellow 
milo: 
No. 77 
13.6 
16.5 
18.2 
8.3 
12.0 
13.(1 
20.1 
21.7 
12.8 
10.7 
12.7 
6.1 
12.8 
No. 223 
13.4 
1,0 
12.0 
19.9 
19. 1 
No. 234 
Standard White 
milo: 
No. 352 
No. 480 
19. 4 
18.9 
2.4 
2.3 
41. 1 
37.1 
29.3 
2S.S 
23.3 
38.8 
31.1 
32. 8 
31.0 
31. 5 
28. 1 
33.4 
33. 3 
22.8 
19.7 
Dwarf Yellow milo: 
No. 1 19 
13. 7 
9.9 
7.9 
35.8 
37.4 
38.7 
10.3 
No. 332... 
'.' ') 
15 « 
2.8 
2.7 
25. 8 
33. 5 
26. 4 
26.0 
28.6 
29.3 
41 6 
34.0 
33. 3 
33.2 
35. 3 
31. 3 
33. 3 
21.2 
No. 359 
Dwarf White milo: 
No. 6.7 
6. 9 18. 
40. 5 
37. 8 
41.3 
17.8 
14.2 
21. 8 
retcrita: 
No. 182 
No. 567 
9.9 
25.] 
23.9 
7.6 
6. S 
13.7 
6.4 
39. 3 
36.6 21.6 
No. 623 
34.1 
28. 2 
40.3 
13.7 
3 !, 3 
31 2 ] 
While durra: 
No. 81 9.5 
23.9 
7.7 
