BROOM-CORN EXPERIMENTS AT WOODWARD, OKLAHOMA. 35 
ing, different numbers of plants in the hills, and different spacing 
of the rows, either 3.5 or 7 feet apart. The object of these experi- 
ments was to determine the reaction of the crop to these different 
environing conditions. The first section of these experiments con- 
sisted of six plats each year during the 5-year period from 1914 to 
1918, inclusive, except in 1916, when there were five plats only. The 
rows in these plats were spaced 3.5 feet apart, with only one plant 
in each hill, but with the hills spaced at different distances. Each 
plat each year, therefore, represented a different rate of seeding. 
The second section of these experiments consisted of the same 
number of plats at the same rates each year with the rows spaced 
the same distance apart (3.5 feet) as in the first part, but each hill 
contained two plants instead of one. These hills occupied twice as 
much row space per hill as those in the corresponding rate in the 
first section of the experiments, so that the space per plant was 
the same for each plat as for the corresponding plat in the first 
section. 
The third section of these experiments differs from the first and 
second sections in its duration, in the number of rates of seeding and 
the spacing represented, and in the grouping of the plants in the 
hills. The experiments were conducted only during the last three 
years, 1916 to 1918, inclusive. The plants are grouped four in each 
hill. The two rates of seeding or of spacing hills employed cor- 
respond to two of the rates previously described. 
The fourth and last section of these experiments contains the same 
number of plats sown at the same rates each year as were included 
in either the first or second section. It differs from them in the 
spacing of the rows, which are 7 feet apart, and in the hills, which 
contain one plant only but are twice as thick in the row as in 
either of the other plats sown at the same rate but with the rows 
spaced 3.5 feet apart. 
ONE PLANT PER HILL, ROWS 3.5 FEET APART. 
Table XIII shows the agronomic data obtained from the first sec- 
tion of the rate-of-seeding and spacing experiments. It will be noted 
in this table that in 1914 the stand varied from 2.8 inches of row 
space per hill or plant at the thickest rate to 10.5 inches at the thinnest 
rate. The thickest rate in 1915 was one plant to 3.6 inches of row 
space and the thinnest rate one plant to 13.5 inches of row space. 
In 1916 there were five rates only. The thickest rate that year was 
one plant to 4.5 inches of row space and the thinnest rate 18.1 inches 
of row space to the plant. Six rates of seeding were used in 1917. 
The thickest stand in that year was 3 inches of row space to the hill 
and the thinnest 19.3 inches of row space, with four rates between 
