BROOM-CORN EXPERIMENTS AT WOODWARD, OKLAHOMA. 



43 



per cent of suckers, and in the rows spaced 3.5 feet apart the average 

 was only 27.1 per cent during the same period. However, when the 

 same numbers of plants to the acre are grown in rows spaced 3.5 feet 

 apart and in rows spaced 7 feet apart, the percentage of suckers de- 

 veloped in the rows 3.5 feet apart is materially larger than in the 

 rows 7 feet apart, in which there are twice as many plants to the 

 row. The comparison is made quickly by dividing by 2 the first 

 percentage in each pair given above. 



The average percentage of stalks headed is slightly higher in this 

 case than when the method of spacing the rows 3.5 feet apart was 

 used. The height of the plants also averages greater in most of the 

 years when the rows are spaced 7 feet apart. 



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

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

 during the 5-year period from 191J/ to 1018, inclusive. 



[One plant in each hill ; rows spaced 7 feet apart.] 





Row space 

 (inches). 



Length of per- 

 iod (days). 



Tercentare 

 of— 



~ 



Yield of brush 

 per acre 

 (pounds). 



Length of 



brush 



(inches). 



5 

 5". 

 o A 



"iear. 

















o"S 













c ~ 



























".- 









h . 



J, 





n 



■& J 



+3*2 













= -3 





% 



I 





= = 



<3 



o 



*z~ 



[3> 



c 



5 



"3 



5 



5 



3 

 p 









a>+s 





o 









o 



c 



O 



z 



c 







H 



02 



> 



fe 



EH 



m 



K w 



a 



~ 



P4 



En 



O 



P-i 



* 





f 2.1 



2.1 



73 



17 



90 







74.8 



4.5 



155 



130 



285 



18.0 



15.0 



53.7 





2.8 



2.8 



73 



17 



90 







81.0 



4.5 



275 



30 



305 



20.0 



15.0 



90.2 



1914 



3.2 



3.2 



73 



17 



90 







78.5 



4.3 



250 



30 



280 



20.0 



15.0 



89.3 



3.8 



3.8 



73 



17 



90 







81.5 



4.3 



205 



40 



245 



20.0 



15.0 



83.7 





4.9 



4.9 



73 



17 



90 







88.0 



4.3 



225 



25 



250 



23.0 



15.0 



90.0 





, 6.3 



6.3 



73 



17 



90 







94.2 



4.3 



310 



15 



325 



24.0 



17.0 



95.4 





f 2.8 



2.8 



75 



16 



91 







90.1 



5.8 



570 



85 



655 



20.0 



18.0 



87.0 





3.7 



3.7 



75 



16 



91 







96.7 



5.8 



530 



80 



610 



23.0 



21.0 



86.9 



1915 



5.2 



5.2 



75 



16 



91 







90.0 



5.8 



390 



50 



440 



24.0 



22.0 



88.6 



5.4 



5.3 



75 



16 



91 



1.5 



91.6 



5.8 



485 



60 



545 



24.0 



22.0 



89.0 





6.3 



5.4 



75 



16 



91 



14.4 



99.4 



5.8 



463 



37 



500 



25.0 



23.0 



92.5 





8.1 



5.1, 



75 



16 



91 



36.7 



93.1 



5.8 



465 



25 



490 



26.0 



24.0 



94.9 





f 2.6 



2.6 



73 



14 



87 







84.7 



5.0 



456 



38 



494 



20.5 



14.5 



92.4 





3.7 



3.6 



71 



16 



87 



2.1 



91.4 



4.8 



438 



50 



4S8 



23.0 



IS. 5 



89.7 



1916 



4.6 



6.4 



4.3 



5.1 



71 



71 



14 



14 



85 

 85 



4.8 

 20.0 



91.6 

 93.9 



5.0 



4.8 



400 

 363 



44 

 75 



444 

 438 



23.0 

 25.5 



16.0 

 16.5 



90.1 





82.9 





[ 9.2 



5. 7 



71 



12 



83 



38.0 



91.0 



4.8 



300 



87 



387 



24.0 



16.5 



80.0 





r'i.5 



1.5 



96 



24 



120 







73.6 



5.5 



130 



210 



340 



15.0 



13.0 



38.2 





2.5 



2.4 



94 



26 



120 



1.0 



92.4 



5.5 



325 



81 



406 



16.0 



13.5 



80.0 



1917 



3.4 



3.2 



87 



29 



116 



5.0 



94.2 



5.5 



312 



106 



418 



17.0 



14.0 



74.6 





5.4 



4.8 



78 



31 



109 



10.4 



93.1 



4.5 



244 



50 



294 



16.0 



12.5 



83.0 





6.0 



4.8 



78 



30 



108 



20.5 



87.1 



4.5 



2.31 



32 



263 



15.0 



13.0 



88.1 



x 



. 9.7 



5.3 



78 



30 



108 



45.0 



82.9 



4.5 



220 



25 



245 



17.5 



15.0 



89.8 





f 1.6 



1.6 



80 



17 



97 







78.2 



3.8 



155 



110 



265 



17.0 



11.5 



58.5 





3.1 



3.1 



73 



11 



84 







72.0 



4.3 



294 



37 



331 



20.0 



15.0 



88.7 



1918 



3.6 



3.6 



73 



11 



84 







67.4 



4.3 



238 



37 



275 



20.5 



14.5 



86.4 



5.0 



4.6 



73 



15 



88 



8.3 



75.2 



4.0 



134 



41 



175 



19.0 



15.5 



76.8 





6.0 



4.9 



73 



11 



84 



18.4 



80.6 



4.5 



325 



25 



350 



21.0 



16.5 



92.9 





9.2 



6.3 



75 



9 



84 



31.2 



78. 



4.3 



256 



13 



269 



21.5 



16.5 



95.4 



The reaction of the crop, as shown by yield of brush with this 

 method of spacing, is quite similar to that in the case of the methods 

 already discussed. Under favorable growing conditions the thicker 

 rates give the highest yields, and in less favorable and poor seasons 



