56 BULLETIN 1039, U. S. DEPARTMENT OF AGRICULTURE. 
varieties grown from 1912 to 1919, inclusive. The results for 1918 
are not included. During this period the Sixty-Day variety matured 
7 days earlier than Canadian, 10 days earlier than Swedish Select, 
and 18 days earlier than White Russian. The Sixty-Day oat was 
also shorter and had a lower weight per bushel than the other 
varieties. 
RATE-OF-SEEDING EXPERIMENTS. 
Silvermine oats were grown in rate-of-seeding experiments at 
Newell in 1918 and 1919. The seed was sown at four different rates, 
viz, 6, 8, 10. and 12 pecks per acre, in triplicated fiftieth-acre plats. 
The yields are shown in Table XLL 
Table XLI. — Yields of Silvermine oats grown in rate-of-seeding experiments on 
irrigated land on the Belle Fourclie Experiment Farm in 1918 and 1919. 
Yields per acre (bushels). 
Rate of seeding per acre. 
1918 1919 
Average. 
I 
6 pecks 77.1 58.5 i 67.8 
8pecks 79.9 i 61.7 i 70.8 
lOpecks 73.2 1 64.6 68.9 
12pecks 69.6 C3.3 66.5 
The 8-peck seeding gave the highest yield in 1918 and the 10-peck 
seeding in 1919. The yields were good and quite uniform in both 
seasons. The average yield from the 8-peck seeding was 70.8 bushels 
and from the 10-peck seeding 68.9 bushels per acre, with the 6-peck 
and 12-peck seedings yielding slightly less. At Newell 8 pecks per 
acre seems to be sufficient seed for Silvermine oats, but for greater 
certainty of crop the seeding of 10 pecks per acre would be desirable. 
EXPERIMENTS WITH BARLEY. 
VARIETAL EXPERIMENTS. 
Eleven varieties of barley have been grown on irrigated land at 
Newell. None of these were grown during all of the eight years from 
•1912 to 1919, but four varieties were grown continuously for six 
years. The yields in general were not very large, but good crops 
were harvested in 1915, 1917, and 1918. The yields are shown in 
Table XLII. 
The Chevalier II variety produced the highest average yield, 38.5 
bushels per acre, from 1914 to 1919. inclusive. This variety also 
gave the highest yield during the three years 1917 to 1919. A head 
of Chevalier II barley is shown in figure 19. The Trebi variety 
yielded nearly as well. The former is a late 2-rowed barley which 
is able to develop fully in the presence of sufficient soil moisture. 
