36 BULLETIN 823, TJ. S. DEPAETMEISTT OF AGKICULTUKE. 



VARIETAL EXPERIMENTS IN THE WESTERN HALF OF THE UNITED 



STATES. 



In recent years the Klierson and Sixty-Day oats have been included 

 in numerous varietal experiments conducted in the western United 

 States. Because of the rapid agricultural development which is now 

 taking place in this region, there is a great demand for information 

 on the different varieties of the more important grain crops. In 

 consequence, rather extensive varietal experiments with oats have 

 been conducted at numerous stations and the results reported from 

 time to time. Kesults from 25 experiment stations and farms located 

 in 12 States are presented in this bulletin. 



This portion of the United States, including' those States from 

 which no experiments with oats have been reported, may be divided 

 as follows: The northern Great Plains area, the southern Great 

 Plains area, and the western Great Basin and coast areas. The few 

 results available from experiments conducted under irrigation also 

 are reported. The general physical data will be discussed separately 

 for each of these three subdivisions. 



The experiments at Hays, Kans. ; Newell, Highmore, Cotton- 

 wood, and Eureka, S. Dak.; Williston and Dickinson, N. Dak.; 

 Moccasin, Mont.; Nephi, Utah; Aberdeen, Idaho; and Bums and 

 Moro, Oreg., have been conducted cooperatively by the United 

 States Department of Agriculture and the State agricultural experi- 

 ment stations of those States, respectively. At other stations the 

 agencies cooperating with the United States Department of Agri- 

 culture have been as follows: AmarUlo, Tex., AmariUo Chamber of 

 Commerce; Akron, Colo., and Mandan, N. Dak., Office of Dry-Land. 

 Agriculture Investigations; Archer, Wyo., Wyoming Board of Farm 

 Commissioners; and Chico, Calif., Office of Foreign Seed and Plant 

 Introduction, The experiments at North Platte, Nebr. ; Edgeley 

 and Langdon, N. Dak. ; Reno, Nev. ; Bozeman, Mont. ; Gooding, 

 Idaho; Pullman and Puyallup, Wash., have been conducted inde- 

 pendently by the respective State agricultural experiment stations. 



RESULTS IN THE NORTHERN GREAT PLAINS AREA. 



The Great Plains area comprises the great extent of gently sloping 

 plain lying between the 98th meridian and the foothills of the Rocky 

 Mountains. The northern Great Plains area includes the semiarid 

 portions of Nebraska and the Dakotas west of the 98th meridian and 

 also northeastern Colorado, eastern Wyoming, and eastern Montana. 



Varietal experiments with the Kherson and Sixty-Day oats and a 

 large number of other varieties have been conducted under dry-land 

 conditions at 13 experiment stations in this section during periods 

 varying from 2 to 12 years. The stations are as follows: Moccasin, 

 Mont. ; Williston, Dickinson, Mandan, Edgeley, and Langdon, N. Dak. ; 



