6 
BULLETIN 1343, IT. S. DEPARTMENT OF AGEICULTURE 
in 1921, 1922, and 1923. The rate of seeding for each variety was 3 
bushels per acre in all years. 
Table 2. — Average dates of soicing and of ripening, height of plant, percentage 
of lodging, hushel iceight, and annual and average acre yields of the AlMon 
and Kherson oat varieties at the lova Agricultural Experiment Station for 
the 13 years from 1910 to 1919, inclusive, and in 1921, 1922, and 1923'' 
Items of comparison 
Albion 
Kherson 
Items of comparison . 
Albion 
Kherson 
Average date sown 
Apr. 14 
July 12 
35.0 
3.2 
55.4 
40.6 
53.7 
63.7 
55.6 
41.6 
46.1 
Apr. 14 
July 13 
34.0 
1.0 
62.2 
38.1 
65.6 
62.8 
55.3 
49.7 
53.8 
Acre yield of grain (bushels)— 
Continued. 
Average height of plant 
inches. - 
Average percentage of lodging 
1917 
1918 
1919 
73.7 
48.7 
32 2 
65.0 
62.5 
41 9 
Acre yield of grain (bushels) : 
1921 
37.4 
58.7 
68.7 
25.9 
1910 
1922 . 
67. 1 
1911 
1923 
7S 7 
Average. . 
1913 - 
52. 1 56. 
1914 
Average bushel weight 
pounds.. 
30.3 
1915 
30.3 
1916 
No varietal experiments were conducted in 1920. 
4 ^P<3, <3/e ^C^^^ 
Fig. 4.- 
-Outline map of a portion of the United States, showing distribution of the 
Albion oat in 1919 
Table 2 shows that Albion is one day earlier than Klierson in 
maturity. In height of plant there is practically no difference. In 
yield, the original Kherson is superior, and in bushel Aveight they 
are practically equal. 
A statistical study ^ of the yields given in Table 2 indicate that 
there is no significant difference betvreen the yielding power of the 
two A'arieties. The odds are only 19.6 to 1 that Kherson is a higher 
yielding variety than Albion. Odds as small as this are of little 
significance. 
^Yhile the results obtained from the Albion oat in nursery experi- 
ments during 1907 and 1908 indicated that it was equal to the parent 
variety in yield and vigor, these indications were not substantiated 
by the results obtained from the early plat experiments, as shown 
3 Anonymous. 
1-25. 1908. 
The probable error of a mean, by Student, hh Biometrica, vol. G, pp. 
