42 
EULLETI^ T 1175 ; U. S. DEPARTMENT OF AGRICULTURE. 
The yield of grain in pounds and bushels per acre is shown for each 
date. In the five years these experiments have been conducted no 
single date of seeding has made the highest yield every year. In 
order to determine the best date on which to seed the crop to make 
the highest grain yield, the average of the different dates for the 
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Fig. 9.— Diagram showing (1) at bottom, daily precipitation (in inches) from April 1 to October 20, 1919; 
(2) central portion, length of growing (solid bars) and fruiting (open bars) periods of six successive 
seedings of Dwarf Yellow milo; (3) at top, mean temperature (in degrees F.) by 5-day periods from 
April 1 to October 20; (4) at right, acre yield (in bushels) from each of the six seedings. 
five years must be considered. In 1917 the June 1 and June 15 dates 
produced the highest yields, 26.6 bushels from each plat. In 1918 
the July 1 date made the best grain yield; in 1919 the June 1 date; 
in 1920 the June 15 date, with the July 1 date a close second; and 
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Fig. 10.— Diagram showing (1) at bottom, daily precipitation (in inches) from April 1 to October 15, 1920; 
(2) central portion, length of growing (solid bars) and fruiting (open bars) periods of six successive 
seedings of Dwarf Yellow milo; (3) at top, mean temperature (in degrees F.) by 5-day periods from 
April 1 to October 15; (4) at right, acre yield (in bushels) from each of the six seedings. 
in 1921 the June 15 date was the high yielder and the June 1 date a 
close second. Thus, in the five years, the June 1 date has made the 
highest grain yield one year and in two others it has tied with the 
June 15 date. The June 15 date likewise has made the highest yield 
in one year and tied with the June 1 date in two years, while in one 
