BROOM-CORN EXPERIMENTS AT WOODWARD, OKLAHOMA. 



51 



Table XXV. — Height and duration of vegetative period with 4-year averages 

 for each Jot of broom corn grown in the nursery at Woodward (Okla.) Field 

 Station during the 4-year period from 1915 to 1918, inclusive. 



Variety and lot 



Height (feet). 



4-year 

 average, 

 1915 to 



1918. 



Gro 



wing period (days).i 



4-year 

 average, 



(C. I. No.). 



1915 



1916 



1917 



1918 



1915 



1916 



1917 



1918 



1915 to 

 1918. 



Standard: 



446 



9.0 



7.0 

 7.5 

 6.8 

 7.0 

 6.5 

 7.0 

 6.5 



7.0 

 6.5 

 7.5 

 8.0 

 8.0 

 6.5 

 6.0 

 6.0 

 6.0 

 6.0 

 6.5 

 7.0 

 7.0 



6.0 

 6.3 

 5. 5 

 7.3 



6.5 

 5.8 

 5.5 



7.3 



83 



72 

 71 

 81 

 86 

 87 

 76 

 68 



100 

 101 

 112 

 114 

 116 

 105 

 89 

 89 

 105 

 105 

 94 

 112 

 104 



77 

 80 

 88 

 98 

 106 

 85 

 70 



as 



556 





560 



10.0 

 11.0 

 11.0 



10.0 

 9.0 



7.5 

 8.3 

 8.0 

 7.3 

 6.8 



93 



96 

 93 

 82 

 79 



93 



561 



98 



563 



100 





87 



580 



77 



580-2 





582 



9.0 



7.0 

 7.0 

 8.0 

 7.5 

 7.3 







79 



77 

 81 

 79 

 •88 

 77 

 77 

 80 

 76 

 76 

 77 

 77 

 77 

 81 

 77 

 76 

 76 



70 



68 

 73 

 81 

 76 







582 2 



5.5 

 6.3 



6.0 



6.9 



7.5 

 7.9 



75 



77 

 94 



82 



583 



9.0 

 10.0 

 10.0 

 9.0 

 9.0 

 8.0 

 9.0 

 7.5 

 8.0 

 8.0 

 8.0 

 8.0 

 8.0 

 8.0 

 7.5 

 11.0 



80 



584 



92 



585 





586 











587 



8.0 



7.5 

 8.0 



8.0 



6.0 

 8.0 







83 



70 

 76 



112 



94 

 112 







588 











589 











590 











591 



7.5 

 8.0 

 7.5 

 8.0 

 8.0 

 8.0 



7.0 

 7.0 

 6.5 

 7.0 

 7.0 

 6.0 



6.0 



7.1 



70 



69 

 76 

 74 

 72 

 70 



105 

 104 



97 

 100 

 104 



94 



80 



83 



592 





593 



6.0 



6.3 



7.0 

 7.3 



&5 



78 



84 



594 



82 



600 





602 



7.0 



7.3 



77 



79 



603 





604 



7.5 

 7.0 



4.8 

 3.3 

 5.0 

 5.3 

 4.8 

 5.0 



7.0 

 6.0 



5.0 

 3.5 

 5.0 

 5.0 

 5.5 

 5.5 



6.5 



8.0 



83 

 71 



71 



76 

 70 

 70 

 93 

 87 



112 



109 



93 

 94 

 91 

 96 

 111 

 115 



89 



95 



607 





Dwarf: 

 243 





3.5 







74 

 73 

 73 

 74 

 109 

 108 





442 



2.8 

 3.5 

 3.5 

 4.3 

 4.0 











535 











557 . 











558 



5.0 



5.0 

 6.5 

 6.0 

 5.3 

 6.0 

 5. 5 

 6.0 

 6.0 

 6.0 

 5.8 



4.9 



4.9 



96 

 96 

 76 

 83 

 80 

 81 

 80 

 84 

 81 

 81 

 77 



102 



559 



102 



562 





564 



5.3 



4.8 



3.8 



5.0 



70 



102 



72 



82 



581 





595 



5.0 



5.0 

 5.5 

 5.5 

 5.5 



4,5 



4.5 

 4.5 

 5.0 

 5.0 



3.3 

 3.5 

 3.5 

 3 5 

 3.5 



4.7 

 4.6 

 4.9 

 5.0 

 5.0 



69 

 63 



70 

 74 

 76 



95 

 93 

 105 

 105 



112 



72 



75 

 72 

 74 

 75 



79 



596 



79 



597 



83 



598 



84 



599 



86 



601 





605 



5.0 



4.5 



5. 5 



5. 5 



4.0 





91 



93 



114 



119 



116 





606 

























1 The vegetative period extends from the date of seeding to the date when heads apparently cease to 

 appear. 



The tendency to sucker is present in both the Standard and Dwarf 

 varieties, but to a much greater degree in some lots than in others. 

 The percentage of suckers in most of the lots did not vary greatly in 

 the two years recorded. However, a few lots in each variety show a 

 wide variation. Standard broom corn (C. I. No. 580) developed 34.3 

 per cent of suckers in 1917 and only 5.5 per cent in 1918. The high- 

 est percentage of suckers developed in Dwarf broom corn was 46.3 

 per cent by C. I. Xo. 595 in 1917. This same lot produced only 30.1 

 per cent in 1918. 



PERCENTAGE OF HEADS AND QUALITY OF BRUSH. 



In 1917 the Standard broom corn grown in the nursery ranged in 

 the proportion of stalks headed from 73.5 per cent for C. I. Xo. 580 to 

 93.4 per cent for C. I. Xo. 561, with an average of about 74 per cent 



