20 BULLETIN 1175, U. S. DEPARTMENT OF AGRICULTURE. 
suckering is indicated by the data in the column headed "Stalks per 
plant." The figures for the milos indicate that the dwarf milos 
sucker to a greater extent than the standard milos, also that the se- 
lection of Standard White milo produced more suckers than the 
selection of Standard Yellow milo, 0. I. No. 234. 
In height of plant there has been great variation, due to seasonal ' 
conditions, the Standard Yellow milo varying from 3.5 feet in 1918 to 
6.8 feet in 1921, with an 8-year average of 5.2 feet. The average 
height of the Standard White milo has been 5.4 feet. The two 
selections of Dwarf Yellow milo have extremes of height of 2 and 5 
feet in 1918 and 1915, respectively, and an average height of 3.6 feet 
for the eight years. The ratio in height between the standard and 
dwarf milos is close to 3 to 2. 
The average of erect heads in the milos during the eight years 
is close to 85 per cent, the dwarf and standard varieties showing but 
little difference in this character. A low percentage of erect heads in 
milo is correlated with vigorous or rapid growth at the time of head- 
ing, hence the expression of this character is dependent on environing 
conditions before and during heading time. 
The stalks headed fell below 22 per cent for all the milos in 1918, 
the year of poorest yields, and above 90 per cent in 1920 and 1921. 
The nearest approach to a correlation between the yield of grain and 
any other agronomic character is with the percentage of stalks 
headed. A correlation of this nature depends on the supposition that 
the row space per stalk is fairly constant for the plats compared. 
The percentage of seed in the total crop has been slightly higher 
for the dwarf than for the tall varieties of milo. The average total 
crop weight for the eight years is highest for Standard White milo, 
with over 6,000 pounds per acre. The dwarf milos averaged less than 
5,000 pounds per acre. 
The average grain yield for the eight years was 22.8 bushels for the 
selection of Standard Yellow milo, 21.8 and 21.2 bushels for the two 
selections of Dwarf Yellow milo, and 19.7 bushels for the Standard 
White milo. The lowest yields for all milos were in 1918, less than 3 
bushels per acre. The highest yields of the dwarf selections were 
obtained in 1921 and of the standard selections in 1919. 
The only milo grown which varies in behavior from the foregoing 
varieties or selections is Early White milo (C. I. No. 480), which has 
been grown in these experiments for but two years. In these years 
it has matured in less time than the other varieties, both the vege- 
tative and ripening periods being shorter than for the other varieties. 
Feterita 3 is a variety of the durra subgroup which has received 
much attention throughout the sorghum belt since the dry season 
of 1913. Under the conditions existing at Woodward, Okla., during 
the period of these experiments feterita has averaged in height the 
same as Standard Yellow milo. The stalk of feterita is more slender 
than milo under similar conditions, and the head, or panicle, which 
is always erect, is more elongated and less compact. The seeds are 
chalky white or bluish white, which color is associated with a brown 
3 Vinall, H. N., and Ball, C. R. Feterita, a new variety of sorghum. In U. S. Dept. Agr., Bur. Plant 
Indus. Circ. 122, p. 25-32. 1913. 
