20 



BULLETIN 836, IT. S. DEPARTMENT OF AGRICULTURE. 



The yield and percentage of good brush vary with the season. 

 However, a low yield of brush does not necessarily mean a small 

 percentage of good quality. In 1918 the yield of good brush was at 

 the rate of 283 pounds to the acre, which was 91.1 per cent of the 

 total crop. In 1915 the yield of. good brush was 600 pounds per acre, 

 which was only 79.1 per cent of the total yield. The acre yield of 

 good brush ranged from 283 pounds in 1918 to 600 pounds in 1915, 

 with an average yield of 392 pounds in the 5-year period, which is 

 an average of 88.5 per cent of the total -brush produced in that period. 

 The annual and the average yields are shown in Table VIII, where 

 it will be noted that this variety ranked second in the 2-year average 

 and tied with one Dwarf strain for first place in the 5-year average. 

 In percentage of good brush it ranks first. This is shown graphically 

 in figure 7. 



Table VI. — Agronomic data for Acme broom corn grown in rarirtal experiments 

 at the Woodward (Olda.) Field Station during the 5-year period from 1914 to 

 1018, inclusive. 





Row 



space 



Length of pe- 



Percentage 



to 



Yield of brush 



Length of 



brush 

 (inches). 



-a 



o 

 o 





(inches). 



riod (days;. 



of 







per acre 

 (pounds). 





Year and variety. 















x> 













•I 









> 



03 



to 



a 





Ut 



73^ 



o 

 +3 













spI 





H 



ik 



<D 



•3 



"c3 





art 





■d 



Li 



"3 



o 



u. 



3 









6B 





o 



CD to 





o 



o 





o 



o 











<X> 



^ 



O 









o 



o 



o 



O 



o 



3 





S 



m 



> 



Ph 



H 



m 



w 



a 



O 



t< 



E-i 





Ph 



Ah 



Season of 1914: 































C.I. No. 243 



7.7 



7.7 



73 



17 



90 







87. 4 



4.0 



305 



20 



325. 



22.0 



14.0 



93.8 



Season of 1915: 































CI. No. 243 



5.5 



5.2 



77 



18 



95 



■1.8 



93.0 



5.5 



000 



155 



755 



23.0 



23.0 



79.4 



Season of 1916: 































CI. No. 243 



8.7 



6.6 



70 



17 



87 



21. 1 



83. 6 



3.8 



378 



55 



433 



18.5 



16.0 



87.2 



Season of 1917: 































CI. No. 243 



7.1 



6.5 



107 



8 



115 



8.7 



97.5 



5.5 



394 



39 



433 



17.0 



13.0 



91.0 



Season of 1918: 































CI. No. 243. 



7.5 



5.8 



69 



15 



84 



22.6 



66.6 



3.5 



283 



28 



311 



17.5 



15.5 



91.1 



Average 



7.3 



6.4 



79.2 



15 94.2 



12.0 



85.6 



4.5 



392 



59.4 



451 



19.6 



16.3 



88.2 











DWARF BKOOM CORNS. 



Dwarf broom corn came into prominence during the early nineties, 

 owing to its adaptation to dry-land conditions. Since then the 

 center of production of the broom-corn crop has moved from Illinois 

 westward into Oklahoma. Most of the crop grown in Oklahoma and 

 adjacent States is of the Dwarf variety except in the Lindsay dis- 

 trict of Oklahoma, which includes the Washita bottom lands in 

 Garvin, Grady, and McClain counties. As in the case of the Stand- 

 ard variety, many names are applied to the Dwarf broom corn. 

 Some of the most common of these are California Golden Dwarf. 

 Dwarf, Dwarf Evergreen, Evergreen Dwarf, Japanese Dwarf, and 



