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, EOWS 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 



