CEREAL EXPEEIMENTS ON THE CHEYENNE EXPEBIMENT 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 whicli 

 contains only 46 tenth-acre plats. Eighteen acres of this field are 

 devoted to rotation experiments mider 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 m this district and is 

 fairly representative of the soil of southeastern Wyoming. 



SCOPE OF THE EXPERIMENTS. 



Varietal experiments m plats have been conducted with winter 

 and spring wheat, ermner, and oats, and with spring barley, flax, 

 and proso. Rate-of-seeding and date-of-seeding tests have been made 

 with whiter wheat and with spring wheat, oats, barley, and flax. 



Fig. 3.— Silo and cow l)am 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 eiiimer, 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 whiter 

 wheats, 1 spring wheat, 1 spring oats, and 1 spring ])arley and a 

 date-of-seeding test with flax were also conducted. In 1914 the 

 number of winter wlieats was materially increased. A few flax 

 varieties and a rate-of-seeding test with flax also were added. In 

 1915 the number of varietic^s and (;x|)(»rim(!nts wns about the same 

 as in 1014. 



KXPEIIIMKNTAL METHODS. 



Two general in(;tiiods of experimentation have ])ecn used at 

 Archer. Cereal varieties have been tested in field ])lats and in 

 nursery rows. It is possible to lest C(;onomicaUy a miicli lai-gcr 



