GRAIN-SORGHUM EXPERIMENTS IX OKLAHOMA. 
41 
plants was 2.85 feet for the six dates in 1918 and 5.05 feet in 1921, 
while the 5-year average height for individual dates varies only 
between 3.8 and 4.2 feet. The May 15 seeding averaged 3.8 feet in 
height for the 5 vears and the Julv 1 date averaged 4.2 feet. 
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io 5 15 ^ ^ <s. . 
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S£Pr£MB£# OCTOSSff B(/SH£LSP£fi l <K/r£ 
Fig. 7.— Diagram showing (1) at bottom, daily pra^ioitation (in inches) from April 1 to October 31, 1917; 
(2) cantral portion, the length of the growing ( solid bars) and fruiting (open bars) periods of six suc- 
cessive seeimgs of Dwarf Yellow milo; (3) at top, m?a:i temperature (in degrees F.) by 5-day periods 
from April 1 to October 31; (4) at right, acre yield fin bushels) from each of the six: seeiings. 
The percentage of stalks headed has also varied more in different 
years than as between the different dates of seeding. The stalks 
headed averaged 53.8 per cent for the six dates in 1918 and 95.9 per 
$ TO 
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^ 60 
ft 
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/v 
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' n s! i\( (\j i»j '^ni^(\|1) '\V^(\jft) ' \ \I i\J i\j nj J N V (\j <\j (* '\si^(\ji^ s ^ vj r\J r\J rrj _^ _ ^ _ * 
c/^LV s?C/GUST S£PT£M3££ OCTO£££. 
^£/e s?c/e£ 
-Diagram showing d) at bottom, daily precipitation (in inches) from April 1 to October 31, 1918; 
»n, length of grawi d fruiting (open bars) periods of six successive 
:gs of Dwarf Yellow milo; (3) at top. mean temperature (in degrees F.) bv 5-day periods from 
April 1 to October 31; (4) at right, acre yield (in bushels) from each of the six seedings. 
cent in 1921. The April 15 date has averaged 96.2 per cent of stalks 
headed,, while the June 1 date has averaged but 73.2 per cent for the 
5 years. This low average is due in large part to an almost total 
failure to produce heads from this seeding in 1918. 
