10 
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 
Station and year 
Plants from seeds inoculated with- 
Species, variety, and strain 
of oats 
TJstilago avenae 
"Ustilago levis 
Total 
num- 
ber 
Infected 
Total 
num- 
ber 
Infected 
Num- 
ber 
Per 
cent 
Num- 
ber 
Per 
cent 
f Columbia, 1920... 
Ames, 1920 
' 52 
187 
48 
104 
692 
34 
150 
42 
102 
680 
65.3 
80.2 
87.5 
98.0 
98.2 
32 
191 
40 
106 
447 
289 
86 
520 
56 
484 
84 
124 
118 
168 
192 
130 
87 
309 
73 
239 
134 
37 
207 
55 
71 
140 
243 
108 
263 
86 
63 
257 
254 
108 
87 
89 
96 
132 
44 
81 
47 
89 
204 
18 
26 
187 
40 
106 
435 
278 
85 
456 
25 
285 
73 
94 
104 
118 
179 
64 
26 
50 
14 
44 
53 
10 
80 
20 
9 
15 
29 
16 
67 
33 
18 
33 
6 
5 
/ 
8 
27 
3 
8 
4 
5 
21 

81.2 
97.9 
Avena nuda— Continued. 
Var. inermis, S. N. 294 
C.I. 1768. 
Aberdeen, 1919 
Aberdeen, 1920 
Manhattan, 1920 
Pullman, 1920 
100 
100 
97.5 
96.2 
Brooklyn, 1921 
Brooklyn, 1922.. 
Columbia, 1920 
Ames, 1920 .. - 
121 
616 
32 
541 
138 
90 
103 
109 
139 
22 
301 
93 
71 
93 
90.0 
22.5 
68.7 
56.1 
67.3 
78.8 
90.3 
98.8 
87.6 
44.5 
58.8 
86.9 
Liberty, S. N. 292, C. L 
845. 
Aberdeen, 1920 
Manhattan, 1920 
Pullman, 1920 
75.8 
88.1 
70.2 
Brooklvn, 1921 
(.Brooklyn, 1922 
233 
174 
72 
255 
93 
193 
156 
38 
219 
5 
8 
60 
15 
21 
20 
14 
93.9 
2.8 
11.1 
23.5 
16.1 
10.8 
12.8 
36.8 
93.2 
49.2 
Columbia, 1920 
Ames, 1919 - 
29.8 
16.1 
Avena sativa: 
Ames. 1920 
19.1 
Abundance, S. N. 269.C.I. 
731. 
Aberdeen, 1919 
Aberdeen. 1920 
Manhattan, 1920 
Pullman, 1920 
18.4 
39.5 
27.0 
38.6 
[Brooklyn, 1921 
Columbia, 1920 
Ames, 1919 . - - 
99 
36 
176 
227 
112 
400 
43 
1 
20 
15 
6 
59 
43.4 
' 2.7 
11.3 
6.6 
5.3 
14.7 
36.3 
12.5 
10.7 
Albion, S. N. 270, C. I. 729. 
Ames, 1920 
11.9 
14.8 
Aberdeen, 1920 
Pullman, 1920. .. 
25.4 
38.4 
Brooklvn, 1921 
Manhattan, 1920 
117 
185 
277 
91 
92 
115 
84 
4 
66 
46 
34 
23 
3 
10 
11 
6 

21 
39.3 
18.3 
8.2 
3.2 
10.8 
9.5 
7.1 

31.8 
28.5 
29.9 
16.9 
Columbia, 1920 
Ames, 1919 
5.5 
5.7 
Ames, 1920 .. . --- .: 
7.8 
Var. aristata, S. N. 35 
Aberdeen, 1919 
Aberdeen, 1920 
Manhattan, 1920 
Pullman, 1920 
8.3 
20.4 
6.8 
9.9 
Brooklyn, 1921 
Brooklvn, 1922 
88 
86 
206 
15 
113 
65 
78 
147 
179 
28 
3 

14 

12 
1 
3 
2 
1 
4 
3.4 

6.7 

10.6 
1.5 
3.8 
1.3 
.5 
14.2 
8.5 
5.6 
10.2 
Var. aurea, S. N. 7 
Ames, 1919 -.- -- - 

Aberdeen, 1920 
Columbia, 1920 
Ames, 1920 
80 
92 
102 
113 
37 
124 
116 
97 
108 
128 
149 
100 


1 



1 


4 
3 
1 


Aberdeen, 1919 
.9 
Var. aurea, S. N. 328, C. I. 
1772. 
Aberdeen, 1920 
Manhattan, 1920 
Pullman, 1920 



Brooklvn, 1921 
Brooklyn, 1922 
[Ames, 1920 .. 
164 
116 
82 
207 
120 
4 

11 
61 
30 
2.4 

13.2 
29.4 
25.0 
.8 


Aurora, S.N. 183, C.I. 831. 
Aberdeen, 1920 
Manhattan, 1920 
Pullman, 1920 
3.1 
2.0 
1.0 
Brooklyn, 1921 
110 
103 
.54 
79 
95 
146 
61 
9 
35 
5 
12 
22 
32 
25 
8.1 
33.9 
9.2 
15.1 
23.1 
21.9 
40.9 
101 
95 
92 
96 
192 
62 
166 
51 
17 
28 
34 
32 
38 
15 
92 
7 
16.8 
Columbia, 1920 
Ames, 1920 
29.4 
36.9 
Awnlcs> Probata ier, S.N. 
114, ('. I. : 
Aberdeen, 1919 
Aberdeen, 1920 
Manhattan, 1920 
Pullman, 1920 
33.3 
19.7 
24.2 
55. 4 
i Brooklyn, 1921 
1 90 
20 
22. 2 
13.7 
