20 
BULLETIN 1275, U. S. DEPARTMENT OF AGRICULTURE 
Table 2. — Results of inoculating seed of varieties and strains of different species 
of Avena with spores of Ustilago avenae and U. levis at the stations and in the 
years indicated — Continued 
Plants from seeds inoculated with— 
Species, variety, and strain 
of oats 
Station and year 
Ustilago avenae 
Ustilago levis 
Total 
num- 
ber 
Infected 
Total 
num- 
ber 
Infected 
Num- 
ber 
Per 
cent 
Num- 
ber 
Per 
cent 
[Columbia, 1920... 
Ames, 1920 
50 
105 
31 
93 
90 










75 
90 
46 
151 
186 
65 
275 
42 
31 






1 

11 


Avena sativa — Continued. 
Siberian, S. N. 323, O. I. 
1712. 
Aberdeen, 1919. 
Aberdeen, 1920 
Manhattan, 1920 
Pullman, 1920 




Brooklvn, 1921. 
Brooklyn, 1922 
371 
91 
36 
58 
93 
100 
148 
108 
83 
124 
55 
102 
63 
108 
73 
113 
78 
136 
77 


6 
16 
34 
31 
30 
34 
22 
45 
15 
36 
21 
49 
1 
5 
5 
8 
11 


16.6 
27.5 
36.5 
31.0 
20.2 
31.4 
26.5 
36.2 
27.2 
35.2 
33.3 
45.3 
1.3 
4.4 
6.4 
5.8 
14.2 
.3 

35.4 
Silvermine, S. N. 164 
Aberdeen, 1920 
LBrooklyn, 1921 
Aberdeen, 1920 
[Ames, 1919 
Silvermine (Early Da- 
70 
16 
22.8 
kota), S. N. 199,C.I.1697. 
204 
102 
71 
66 
15 
43 
3 
8 
7.3 
Silvermine, S. N. 220, 
C.I. 659. 
Silvermine, S. N. 221, 
J Aberdeen, 1920 
(Manhattan, 1920 
(Brooklyn, 1921 
/Aberdeen, 1920 
IBrooklyn, 1921 
.Aberdeen, 1920 
Brooklyn, 1921 
Columbia, 1920 
Ames, 1920. 
42.1 
4.2 
12.1 
C.I. 1727. 
Silvermine (American 
65 
19 
29.2 
Banner), S. N. 222,C. I. 
1729. 
79 
52 
91 
108 
140 
100 
65 
60 
63 
84 
68 
231 
85 
89 
79 
59 
34 
6 
12 
9 
2 
12 
11 
19 
4 
14 
6 
45 
11 
29 
27 
21 
43.0 
11.5 
13.1 
Silvermine (Abyssinian), 
S.N. 303, C.I. 1747. 
Aberdeen, 1919 
Aberdeen, 1920 
Manhattan, 1920 
Pullman, 1920 
8.3 
1.4 
12.0 
16.9 
» 
.Brooklyn, 1921 
Columbia, 1920 
Ames, 1920 
89 
24 
105 
76 
168 
83 
17 
3 
15 
12 
22 
13 
19.1 
12.5 
14.2 
15.7 
13.0 
15.6 
31.6 
6.3 
16.6 
Silvermine (President), 
S.N. 319, C.I. 1629. 
Aberdeen, 1919 
Aberdeen, 1920 
Manhattan, 1920 
Pullman, 1920 
8.8 
19.4 
12 9 
32.6 
Brooklyn, 1921 
Columbia© 
91 1 42 
41 1 9 
46.1 
21.9 
36.9 
50.0 
30.5 
42.8 
51.1 
21.2 
3.9 
35.5 
48.5 
46.1 
9.5 
11.5 
9.3 
14.0 
30.8 
26.3 
34.1 
35.5 
(of Etheridge), S. N.165, 
Aberdeen, 1920 
Brooklyn, 1921. 
Ames, 1919 
73 
102 
131 
189 
86 
99 
127 
59 
101 
130 
158 
242 
644 
256 
188 
577 
27 
51 
40 
81 
44 
21 
5 
21 
49 
60 
15 
28 
60 
36 
5S 
152 
C.I. 1894. 
78 
119 
79 
45 
74 
144 
46 
37 
16 
43 
15 
21 
14 
25 
47.4 
13.4 
Silvermine Selection 
(Swedish Select), S. N. 
231, C.I. 1634. 
Aberdeen, 1920... 
Manhattan, 1920. 
Brooklyn, 1921 
Brooklyn, 1922 
54.4 
33.3 
28.3 
9.7 
543 
Sixty-Day, S. N. 166 
Aberdeen, 1920 
Brooklyn, 1921 
Columbia, 1920 
Ames, 1919. 
86 
332 
132 
508 
277 
134 
545 
131 
77 
15 
32 

58 
35 
34 
79 
49 
9 
17.4 
9 6 

Ames, 1920.. 
11.4 
Sixty-Day, S. N. 223, C. I. 
105. 
Aberdeen, 1919 
Aberdeen, 1920 
Manhattan, 1920 
Pullman, 1920.. 
12.6 
25.3 
14.4 
37.4 
Sixtv-Dav, S. N. 224, C. 
Brooklyn, 1921. 
^Aberdeen, 1920 
\ Brooklyn, 1921 
127 
95 
126 
60 
85 
109 
27 
39 
88 
107 
54 
75 
12 
31 
53 
5 
10 
20 
8 
11 
31 
13 
9 
32 
9.4 
32.6 
42.0 
8.3 
11.7 
18.3 
29.6 
28 a 
35.2 
12, 1 
16.6 
42.6 
11 6 
I. L619. 
Sixty-Day Selection 
109 
47 
28 
14 
25.6 
29.7 
(of Etheridge), S..\.Ki7, 
Aberdeen, 1920 
IBrooklyn, 1921... 
(Columbia ® 
c. I. lyoti. 
105 
31 
13 
14 
12 3 
45.1 
[Aberdeen, 11)20 
IBrooklyn, 1921 
IBrooklyn, 1922 
j Aberdeen, 1920 
IBrooklyn, 1921 
Swedish Select, S. X. 168. 
Swedish Select, S. X. 225, 
7S 
162 
22 
17 
28.2 
10.5 
0. I. 1827. 
82 
22 
26.8 
