BROOM-CORN EXPERIMENTS AT WOODWARD, OKLAHOMA. 29 
The yield of good brush, the total vield, the length of the brush, 
and the percentage of good brush in the total yield vary widely be- 
tween the different dates of seeding in nearly all years. Good to 
excellent yields were obtained from one or more of the seedings each 
year, while those from other seedings were only fair to poor. In 
1914 the vield of the cured brush was obtained on one lot only. The 
other two lots were weighed green after thrashing and accidentally 
placed on the racks to cure without being properly labeled, which 
made later identification impossible. The season of 1915 was ex- 
ceptionally favorable throughout, which resulted in excellent yields 
from all the dates of seeding. The lowest yield in that year was 
700 pounds from the seeding made July 7 and the highest 895 
pounds from the seeding of June 19. In the variable season of 
1916 the yields ranged from 742 pounds from the May 1 seeding to 
only 350 pounds from the seeding made on June 1. In 1917 the 
highest yield was obtained from the seeding made on July 1, the 
next highest from the June 22 seeding, and the lowest yield from 
the early seeding, April 16. In 1918, the poorest crop season in the 
5-year period, the highest yield, 350 pounds, was'from the seeding 
made July 1, while the lowest, 250 pounds, was made from the 
June 1 seeding. 
COMPARATIVE YIELDS IN THE DATE-OF-SEEDING EXPERIMENTS. 
Table X shows the annual and average acre yields of Acme broom 
corn in the date-of-seeding experiments. The seedings in the differ- 
ent years in some cases were not made on exactly the same date. 
These dates in some cases varied as much as five days. The result- 
ing yields are considered comparable and in this table are grouped 
accordingly. Therefore, seedings made on May 22 and 27, on June 
10 and 15, and on June 18 and 22 in different years are considered — 
as representing the same dates of seeding. 
The annual yields of the good and the poor qualities are shown 
first. Then is given a 2-year average yield from the plats on all 
dates used in that period, and then a 3-year average yield for the 
comparable dates in that period. It will be noted here that the 
lowest average yield in the 2-year period was from the seedings made 
on May 1 and that the average yields increased as the date of seed- 
ing advanced, reaching the maximum of 446 pounds of good brush 
from the July 1 seedings. In the 3-year peried from 1916 to 1918, 
inclusive, the highest average yield of good brush, 450 pounds, was 
obtained from the July 1 seeding, while the second highest, 420 
pounds, was from the seedings made on May 1. 
These results indicate that the best times to sow are from about 
May 1 te 15 and from June 15 to July 1. August is usually dry 
and hot, and such weather has a bad effect on-yield and quality of 
