62 
BULLETIN 823, U. S. DEPARTMENT OF AGRICULTURE. 
The results shown in Table L decidedly favor the midseason and 
late varieties for growing under irrigated conditions similar to those 
at Newell. Of the four varieties under experiment during the full 
6-year period the White Russian leads with an average yield of 45.8 
bushels, as compared with 36.5 bushels for the Sixty-Day, a difference 
of nearly 10 bushels. In the 4-year period from 1914 to 1917, inclu- 
sive, the White Russian and a local variety similar to Swedish 
Select lead with average yields of 49.9 and 49.4 bushels, respectively, 
as compared with an average of 36.7 bushels for the Sixty-Day during 
the same period. 
Results under Irrigation in Montana. 
The average yields of the Kherson, the Sixty-Day, and eight other 
varieties of oats grown under irrigation at the Montana Agricultural 
Experiment Station at Bozeman (2) in the 5-year period from 1907 
to 1911, inclusive, are shown in Table LI. 
Table LI. — Average yields of the Kherson, the Sixty-Day, and eight other varieties of oats 
grown under irrigation at the Montana Agricultural Experiment Station (at Bozeman) 
during the 5-year period from 1907 to 1911, inclusive. 
[Data compiled from Montana Agricultural Experiment Station Bulletin 84 (2).] 
Group and variety. 
Yield 
per acre. 
Group and variety. 
Yield 
per acre. 
Early yellow: 
Sixty-Day 
Bushels. 
73.9 
82.0 
70.9 
102.3 
100.0 
Midseason white — Continued. 
Bushels. 
98.3 
97.9 
Early white: 
Late white (side): 
93.1 
Tartar King 
90.0 
White Tartar 
80.2 
Danish 
Reference to Table LI shows that both the midseason and the late 
varieties have materially outyielded the Sixty-Day and Kherson at 
Bozeman on irrigated land. Banner, the highest yielding midseason 
oat, has exceeded the Kherson and the Sixty-Day in average yield 
by about 20 and 30 bushels, respectively, during the 5-year period. 
As indicated by these results, it is usually more profitable to grow the 
midseason and late varieties under conditions similar to those at 
Bozeman, unless for some reason an early-maturing oat is required. 
In a recent publication (3, p. 166-167) the Montana Agricultural 
Experiment Station reports that Ontario A. C. No. 72, a selection 
from Siberian imported from Canada, yields best under irrigation. 
During the past four years it has averaged 119.4 bushels per acre. 
Other varieties showing high average yields under irrigation were 
Myrick, Silvermine, Belyak, and Banner with yields of 114.9, 113.9, 
110.1, and 109.6 bushels per acre, respectively. 
