OAT VARIETIES FOE THE CORN BELT 
17 
YIELDS OF lOWAR 
EXPERIME^^TS AT THE IOWA STATION 
In two of the seven seasons that lowar has been grown at the 
Iowa station the variety has been subject to mishap. In 1917 lowar 
was badh^ damaged by flood, and in 1919 a large part of the grain 
was lost because of a storm which occurred after the variety was ripe 
and before it could be harvested. Data for six years are given, but 
the data of only five seasons are comparable as a basis for averages 
for this variety. 
The average date of seeding, date of ripening, height of plant, 
percentage of lodging, bushel weight, and the annual and average 
yields of the lowar, Kherson, Albion, and Richland varieties at the 
Iowa Agricultural Experiment Station for the seven years from 
1916 to 1919, inclusive, and in 1921, 1922, and 1923 are given in 
Table 12. 
Table 12. — Average dates of sowing and of ripening, height of plant, percentage 
of lodgi/)ig, 'bushel weight, and the annual and average acre yields of the 
lowar, Richland, Albion, and Kherson oat varieties at the Iowa Agricultural 
Experiment Station for the seven years from 1916 to 1919, inclusive, and in 
1921, 1922, and 1923' 
Items of comparison 
lowar 
Kherson 
Albion 
Rich- 
land 
Apr. 14 
July 15 
36 
24 
56.7 
57.5 
62.5 
(2) 
41.2 
60.6 
87.8 
Apr. 14 
July 13 
34 
6 
53.8 
65.0 
62.5 
41.9 
25.9 
67.8 
78.7 
Apr. 13 
July 12 
34 
11 
46.1 
73.7 
48.7 
32.2 
37.4 
58.7 
68.7 
Apr. 14 
July 12 
Average height of plant inches. . 
Average percentage of lodging 
31 
4 
Average yield of grain (bushels): 
1916 - 
53.6 
1917 
64.3 
1918 
55.6 
1919. . 
47.5 
1921 
37.2 
1922 
65.0 
1923 
78.1 
Average: 
1916-1918, 1921-1923 
61.1 
59.0 
56.5 
57. 7 
30.9 
55.6 
52.2 
51.9 
31.4 
59.0 
1916-1919, 1921-1923 
57.3 
1916, 1918, 1921-1923 
61.8 
31.1 
57.9 
Average bushel weight pounds . . 
32.1 
No varietal experiments were conducted in 1920. 
- Plat destroyed by storm. 
The data presented in Table 12 show that lowar was superior in 
yield to Albion and Richland as well as to the original Kherson. 
For the five years 1916, 1918, 1921, 1922, and 1923 it exceeded the 
average yield of Albion by 9.9 bushels per acre. The ach^antage 
over Kherson and Richland was less, howcA^er, being 4.1 and 3.9 
bushels, respectively^ 
A statistical study* of the yields of lowar and Kherson for the 
six years 1916, 1917, 1918, 1921, 1922, and 1923 show odds of 2.36 to 
1 in favor of lowar. Odds as small as these are of no significance. 
While the affected yield of lowar for 1917 has been used in this 
analysis the abnormally low yield of Kherson for 1921, for which 
there is no apparent explanation, also has been considered. 
* See footnote 2, page 6. 
