CEREAL EXPERIMENTS ON THE CHEYENNE EXPERIMENT FARM. 9 
acres, is laid out in series lettered from A to L, inclusive. Each 
contains 67 tenth-acre plats except series J, K, and L, each of which 
contains only 46 tenth-acre plats. Eighteen acres of this field are 
devoted to rotation experiments under the direction of the Office of 
Dry-Land Agriculture Investigations. The soil on the entire experi- 
mental area is as uniform as can be expected in this district and is 
fairly representative of the soil of southeastern Wyoming. 
SCOPE OF THE EXPERIMENTS. 
Varietal experiments in plats have been conducted with winter 
and spring wheat, emmer, and oats, and with spring barley, flax, 
and proso. Rate-of-seeding and date-of-seeding tests have been made 
with winter wheat and with spring wheat, oats, barley, and flax. 
Fic. 3.—Silo and cow barn on the Cheyenne Experiment Farm, Archer, Wyo. (Photograph lent by 
the Office of Dry-Land Agriculture Investigations.) 
In 1913, 7 varieties of winter wheat, 1 of winter emmer, 32 varie- 
ties and 11 pure lines of spring wheat, 14 varieties of oats, 16 of 
barley, 12 of flax, 8 of proso, and 8 of grain sorghum were grown 
at Archer. Rate-of-seeding and date-of-seeding tests with 2 winter 
wheats, 1 spring wheat, 1 spring oats, and 1 spring barley and a 
date-of-seeding test with flax were also conducted. In 1914 the 
number of winter wheats was materially increased. A few flax 
varieties and a rate-of-seeding test with flax also were added. In 
1915 the number of varieties and experiments was about the same 
as in 1914. 
EXPERIMENTAL METHODS. 
Two general methods of experimentation have been used at 
Archer. Cereal varieties have been tested in field plats and in 
nursery rows. It is possible to test economically a much larger 
55650°—Bull. 430—16——2 . 
