26 BULLETIN 430, U. S. DEPARTMENT OF AGRICULTURE. 
which prevailed, the 3-peck and 4-peck rates yielded 27 bushels and 
the 5-peck rate 28.5 bushels per acre. The average yield of the three 
plats was 27.5 bushels per acre. When compared with spring barley 
or oats it is seen that spring emmer has not yielded as well as either 
of these crops during the 3-year period. 
WINTER SPELT. 
Only one variety of winter spelt has been tested at Archer, and 
that for only one year. On September 11, 1913, a tenth-acre plat 
was sown to Red Winter spelt. A good stand and a fair fall growth 
resulted, but the plants were entirely winterkilled. Spelt will prob- 
ably never be an important crop in this area. 
EXPERIMENTS WITH OATS. 
WINTER OATS. 
Only one variety of winter oats has been tested at Archer. On 
September 11, 1913, a tenth-acre fallow plat was sown to the Bos- 
well Winter variety. A good stand and a fair fall growth resulted. 
The plants were all killed, however, during the ensuing winter, and 
winter oats have not since been grown. Oats are much less winter 
hardy than wheat and there is no likelihood that they will succeed 
as a. winter crop in this section of the Great Plains area. 
SPRING OATS. 
The value of the oat crop in Wyoming is greater than that of any 
other cereal. A large proportion of the crop is grown under iriga- 
tion. Fairly good yields a >» obtained on the dry lands, however. 
VARIETAL EXPERIMENT. 
Fifteen varieties of spring oats have been tested at the Cheyenne 
Experiment Farm during 1913, 1914, and 1915. ‘The annual and 
average yields of these varieties are shown in Table XVI. The oat 
varieties were grown in tenth-acre plats on breaking in 1913, in tenth- 
acre plats on fallow in 1914, and in duplicate twentieth-acre plats 
on double-disked corn ground in 1915. 
In 1913 the seed bed was poor, the summer dry, and yields low. 
The Sixty-Day (C. I. No. 165) was the highest yieldmg variety, with 
15.8 bushels per acre. In 1914 the seed bed was good, the summer 
dry, and yields low. The Kherson (C. I. No. 459) was the highest 
yielding variety, with 27.5 bushels per acre. In 1915 the seed bed 
was good, the spring and summer wet, and yields good. The Abun- 
dance (C. I. No. 731) was the highest yielding variety, with a yield of 
52.4 bushels per acre. Oats do best in a cool, moist climate, which 
accounts for their better yields in 1915. 
9 4a ct Ge ee EC cae ii 
