BROOM-CORN EXPERIMENTS AT WOODWARD, OKLAHOMA. 



41 



hill varying from 26.8 inches in 1917 to 28.8 inches in 1918, which 

 is equivalent to one plant each in hills spaced approximately 7 inches 

 apart in the row. 



Table XVII. — Agronomic data for Acme broom com in, the combined rate-of- 

 sezding and spacing experiments at the Woodward (Okla.) Field Station 

 during the 3-year period from 1916 to 1918, inclusive. 



[Four plants in each hill; rows spaced 3.5 feet apart.] 



Year. 



Row space 

 (inches). 



Length of pe- 

 riod (days). 



Percentage 

 of— 



3 



ft . 



5 



to 



'5} 



w 



Yield of brush 

 per acre 

 (pounds). 



Length of 

 brush 

 (inches). 



T3 

 o 

 o 



%4 



' 1 



M 

 02 



03 . ' 

 > 





"c3 

 -^> 

 o 



EH 



8 



o 



a 





■d 



o 

 o 

 O 



O 



o 



"3 

 o . 



EH 



d 



o 

 o 



O 



o 

 o 



fit 





1916 



/17.6 

 \28.4 



/19.6 



\26.8 



/19.1 



\28. 8 



4.1 

 6.4 



4.7 

 6.5 



18.9 

 28.4 



73 



71 



99 



95 



77 

 75 



14 

 16 



21 

 21 



20 

 22 



87 

 87 



120 



116 



97 

 97 



6.3 

 9.9 



4.0 

 3.5 



1.6 

 1.3 



87.7 

 90.2 



94.0 

 96.7 



75.3 

 85.3 



4.3 

 4.5 



5.3 



5.0 



3.8 

 3.5 



525 

 480 



469 

 372 



256 

 242 



65 

 50 



25 



72 



38 

 29 



590 

 530 



494 

 444 



294 

 271 



20.0 

 23.0 



15.5 

 16.5 



15.5 

 18.0 



17.5 

 18.5 



12.0 

 13.5 



10.5 

 12.5 



89.0 



1917 



90.6 

 94.9 



1918 



83.8 

 87.2 





89.5 



The reaction of the crop to this method of grouping the plants 

 appears to be about the same as to the other methods previously con- 

 sidered with regard to the vegetative, fruiting, and total growing 

 periods. A small percentage of suckers was produced at both rates 

 each year, but the average percentage in either rate is much smaller 

 than that of the corresponding rates with single plants in each hill ; 

 at the thinner rate a higher percentage of headed stalks was pro- 

 duced each year than at the thick rate, but the highest yield of both 

 good brush and total brush was obtained at the thick rate in all 

 three years. The thinner rate produced the longest average length 

 of brush each year. The annual and 3-year average acre yields are 

 shown in Table XVIII, where comparisons are readily made between 

 these two rates, and these same data are shown again in Table XXI, 

 where comparisons with other methods of spacing are made. 



Table XVIII. — Annual and average acre yields of Acme broom corn in the com- 

 bined rate-of-seeding and spacing experiments at the Woodward (Okla.) 

 Field Station during the 3-year period from 1916 to 1918, inclusive. 



[Four plants in each hill; rows spaced 3.5 feet apart.] 





hills. 



Annual acre yields (pounds). 



Average yields 

 for the 3 years 



Distance between 



1916 



1917 



1918 



1916 to 1918. 





Good. 



Poor. 



Good. 



Poor. 



Good. 



Poor. 



Good. 



Poor. 



17.6 to 19.6 inches 



525 

 4S0 



65 

 50 



469 

 372 



25 

 72 



256 

 242 



38 

 29 



417 

 365 





26.8 to 28.8 inches 













