30 



BULLETIN 976, U. S. DEPARTMENT OF AGRICULTURE. 



feet apart. A higher yield was produced from 3^-foot rows than 

 from 7-foot rows during only two of these five years. The average 

 yield from both methods in the 4-year period is the same, but in 

 the 5-year period the average is in favor of the rows spaced 7 feet 

 apart. 



Table XIV. — Annual and average yields of Dwarf milo in the spacing experiments at the 

 Amarillo Cereal Field Station during the 6-year period from 1914 to 1919, inclusive. 



[In the statement of yields per acre 



the bushel is rated at 58 pounds. 









Space 



be- 

 tween 

 rows. 



Row 



space 



per 



plant. 



Annual yields per acre. 



Average yields per 

 acre. 



Approximate number 

 of plants per acre. 



1914 



1915 



1916 



1917 



1918 



1919 



4 

 years, 

 1914 to 

 1917. 



5 

 years , 

 1914 to 

 1918. 



6 

 years, 

 1914 to 

 1919. 



Group A, 24,000 plants. 

 Group B, 16,000 plants. 

 Group G, 13,000 plants. 

 Group D, 9,000 plants. 



Feet. 



{ f 

 { f 

 { f 

 I f 



Inches. 

 6.5 

 3.0 



9.5 

 4.3 



12.0 

 6.0 



16.5 

 9.6 



Bush. 

 26.2 

 32.2 



25.3 



27.4 



14.8 

 32.2 



20.5 

 35.5 



Bush. 

 67.2 

 56.4 



68.1 

 60.7 



72.8 

 60.7 



61.5 

 53.1 



Bush, 

 7.4 

 9.0 



7.6 

 6.9 



15.5 

 15.5 



18.3 



27.5 



Bush. 

 27.6 

 27.6 



26.2 

 31.9 



27.3 

 35.5 



34.5 

 32.6 



Bush. 

 1.7 

 4.0 



4.7 

 12.1 



3.3 

 4.0 



4.7 



Bush. 

 50.5 

 46.9 



27.8 

 51.2 



48.9 



52.6 

 45.9 



Bush. 

 32.1 

 31.3 



31.8 



31.7 



32.6 

 36.0 



33.7 

 37.2 



Bush. 

 26.0 



25.8 



26.4 



27.8 



26.7 

 29.6 



Bush. 

 30.1 

 29.4 



27.8 



30.8 

 32.8 



"""33.'2 



Group C represents a stand of 12 inches of row space to the plant 

 in the rows spaced 3^ feet apart and 6 inches in the rows 7 feet apart, 

 or approximately 13,000 plants to the acre. At this rate the best 

 yields were produced in two years from the rows spaced 3^ feet apart 

 and in three years from the rows spaced 7 feet apart, while the 

 methods tied in yield in the other year. The rows spaced 7 feet 

 apart lead in average yields in all three periods. 



Group D has an average of one plant to 16| inches of row space 

 in rows spaced 3^ feet apart and 9.6 inches where the rows are spaced 

 7 feet apart, or approximately 9,000 plants to the acre. This rate is 

 not represented in 1918 by the method with the rows spaced 3^ feet 

 apart, which leaves five years only for comparison between the two 

 methods. In this period the 3J-foot rows produced the highest 

 yield in three years, but in the 5-year period the rows spaced 7 feet 

 apart produced a higher average yield by 3^ bushels. It is interesting 

 to note that the method of spacing the rows 7 feet apart usually 

 produced the highest yields in fair to poor seasons, which is an 

 indication that it is the surest method of growing a grain crop in 

 unfavorable seasons. 



DAWN KAFIR. 



The series of spacing experiments conducted with Dwarf milo were 

 duplicated with Dawn kafir (figs. 10 and 11). As the nature of the 

 experiment has already been described, only the results obtained 



