BROOM-CORN EXPERIMENTS AT WOODWARD, OKLAHOMA. 



37 



from sowings at different rates in the same year and from the same 

 rates in different years are not alike, owing primarily to seasonal 

 conditions. It is interesting to note, however, that the highest yield 

 was produced by seedings at the intermediate rates in three years 

 of the 5-year period. The thickest rate outyielded all others in 1917, 

 when there was 7 inches of rainfall in August, and the thinnest rate 

 ranked first in 1918, when the rainfall in August amounted to 0.7 of 

 an inch only. These are the extreme rates of seeding and they can 

 give best results only under extreme seasonal conditions. 



The stand has an influence on the length of the brush. Thick 

 stands tend to produce short brush, and thin stands long brush. The 

 difference between the length of the brush produced by the thickest 

 and the thinnest stands in the 5-year period ranges from 6 inches in 

 1914 to 2 inches in each of the years 1915 and 1917. In 1916 it was 3 

 inches, and in 1918 there was a difference of 5 inches. 



Table XIII. — Agronomic data for Acme broom corn in the combined rate-of- 

 seeding and spacing experiments at the Woodward (Olda.) Field Station 

 during the 5-year period from 1914 t° 1918, inclusive. 



[One plant in each hill; rows spaced 3.5 feet apart.) 





Row 



space 



Length of pe- 



Percentage 



2 



Yield of brush 



Length of 



brush 

 (inches). 



-d 



o 

 o 





(inches). 



riod (days). 



ol 





p. 



per acre 

 (pounds). 





Year. 







© 









T3 



















> 



• 







a> . 



o 













bo ~< 



C3rO 









"c3 



.a 





■ ' " 



tlS 



-4^» 













a 





to 



S 



<D 



■-j 



a> 



*3 



_bo 



■6 



u 



C3 



-3* 



&- 



3 









bO 





' o 



<B OT 





o 



o 





o 



o 











<D 



U 



o 



3 







o 



o 



O 



o 



o 



a> 





** 



Ul 



h> 



N 



e 



m 



K 



W 



O 



fn 



H 



C 



Pm 



Ph 



. 



f 2.8 



2.8 



73 17 



90 







62.5 



4 3 



140 



100 



210 



IS 



13 



58.3 





4.3 



4.3 



73 



17 



90 







66.7 



4 3 



215 



90 



305 



19 



15.0 



70.5 



1914 



5 8 



5.8 



73 



17 



90 







81.8 



4 



305 



60 



365 



21 



15.0 



80.8 



7.7 



7.7 



73 



17 



90 







87.4 



'4 



305 



20 



3?5 



22.0 



14.0 



93.8 





10-3 



10.3 



73 



17 



90 







67.6 



4 



250 



20 



270 



24 "0 



17.0 



92.6 





10.5 



10.5 



73 



17- 



90 







84.2 



4.0 



280 



10 



290 



24.0 



15.0 



96.6 





f 3.6 



3.6 



75 



16 



91 







81.4 



5.8 



683 



89 



772 



22- 



20 



88.5 





4.8 



4.6 



75 



16 



91 



4.0 



86.9 



5.8 



775 



87 



862 



23. 



21.0 



89.9 



1915 



1 6.3 

 1 9.4 



5.7 

 7.2 



75 

 75 



16 

 16 



91 

 91 



8.7 

 24.0 



86.1 

 85.5 



5.8 

 -5 8 



685 

 590 



110 



75 



795 

 665 



23. 

 25.0 



21.0 

 23.0 



86.2 





88.8 





10.9 



5.6 



75 



16 



91 



48.6 



89.2 



5 8 



735 



70 



805 



23 



21.0 



91.3 





U3-5 



6.2 



75 



16 



91 



54.1 



88.4 



5.8 



650 



80 



730 



24.0 



22.0 



89.0 





f 4.5 



4 3 



74 



13 



87 



2.7 



79.0 



4 



405 



65 



470 



20.0 



15.5 



86.2 





6.5 



6 



73 



14 



87 



7.5 



90.9 



4.5 



531 



44 



575 



22.5 



18.5 



92.4 



1916.. 



< 9. 1 



7.4 



71 



14 



85 



19.3 

 36 9 



90.5 

 89.1 



4.5 

 4.3 



480 

 415 



75 

 90 



555 

 505 



23.5 

 20.0 



18.0 

 16.5 



86.5 

 82.2 





12.3 



7.8 



71 



14 



85 





lis. 1 



9.3 



71 



12 



83 



48.4 



86.0 



4.0 



295 



120 



415 



23.5 



16.5 



71.1 





f 30 



2.9 



94 



26 



120 



1.6 



92.6 



5.5 



425 



105 



530 



13. 5 



13.0 



80.2 





4.9 



4.3 



98 



22 



120 



13.1 



90.2 



5 5 



38.0 



125 



505 



15.5 



13.5 



75.2 



1917 



6.7 

 10.7 



5.3 

 6 3 



99 

 80 



18 

 29 



117 

 109 



16 3 



41 5 



91.1 

 79.3 



5 

 4.0 



350 

 290 



90 



55 



440 

 345 



16.5 

 15.5 



13.5 

 14.5 



79.5 





84.1 





12.0 



6 3 



80 



28 



108 



47 5 



78.6 



4.3 



295 



55 



350 



16.0 



14.5 



84.3 





.19.3 



8.3 



82 



35 



117 



57.3 



92.8 



4.8 



330 



65 



395 



15.5 



14.0 



82.2 





f 3.1 



3 1 



76 



30 



106 







16.6 



3 3 



50 



33 



83 



15.5 



12.5 



60. 





4 8 



4.7 



77 



20 



97 



3 1 



61.1 



3 5 



ISO 



34 



214 



17.5 



10.5 



83.3 



1918 



7.2 

 10.0 



6.2 



7.6 



77 

 80 



20 

 17 



97 

 97 



14.6 

 23 8 



84.1 

 75- 8 



3 5 

 3 5 



281 

 235 



38 

 25 



319 



260 



18.0 

 17.5 



13.0 



11.5 



88.2 





90.4 





12.2 



7.8 



74 



10 



84 



36 1 



67.8 



4.0 



257 



43 



300 



19 5 



15.5 



85.7 





19.3 



8.4 



75 



9 



84 



56.4 



75.9 



3.8 



288 



37 



325 



20.5 



16.0 



88.5 



