Aug. is, 1914 
Head Smut of Sorghum and Maize 
363 
Table V .—Results showing infection produced in Red Amber sorgo by extraseminal 
inoculations —Continued 
Plat C—Continued 
Serial No. 
Date. 
Seed lot. 
Spore lot. 
Method. 
Total 
number of 
plants. 
Infection. 
8 
June 25 
II 
B 
cm(x)s fl 
136 
Per cent. 
2. 94 
9 
do 
II 
(B) 
cp(y) 5 ° 
112 
7 . I 
10 
May 29 
II 
B 
bmx° 
45 
42. 2 
11 
do 
II 
Bb 
bmx® 
68 
39 * 7 
12 
(May 20) 
II 
b, control 
112 
32. 1 
13 
do 
II 
a, control 
148 
1. 4 
14 
do 
II 
a, control 
185 
3 * 2 
15 
do 
(n) 
a, control 
136 
2 5 
16 
do 
(ii) 
a, control 
114 
3 * 5 
i 7 
(May 25) 
(hi) 
a, control 
Si 
3*9 
18 
do 
III 
a, control 
50 
4 
19 
(May 20) 
II 
a, control c 
328 
i* 5 
20 
do 
(ii) 
a, control c 
268 
0 
Plat D d 
[Planted at Manhattan, Kans., in the field; counted Aug. 30, 191a.] 
1 
June 4 
II 
B 
bn(x)2 0 
1 
0 
2 
do 
II 
(B) 
bpfx)2° 
24 
0 
3 
June 3 
II 
(B) 
bp(x)5« 
1 
0 
4 
June 4 
II 
B 
bmx2° 
24 
29.1 
5 
June 3 
II 
B 
bmx3° 
3 
0 
6 
do 
II 
B 
bmxs 0 
1 
100 
7 
June 3-4 1 
II 
B 
amx 
So 
10 
8 
June 4 
II 
B 
cm(x) 
200 
0 
9 
do 
II 
( B ) 
cp(y) c 
75 
0 
10 
(June 4) 
II 
a, control 
210 
0 
11 
do 
II 
a, control 0 
73 1 
0 
12 
do 
II 
b6, control 0 
5 
0 
n 
do 
II 
b2, control 0 
26 
0 
Plat E / 
[Planted at St. Paul, Minn., in the field; counted about Sept. 20, 1912.] 
1 
June 7 
II 
B 
bn (x) 
49 
10. 2 
2 
do 
II 
(B) 
bp (x) 
W 
0 
3 
do 
II 
B 
bmx 
3° 
26. 7 
4 
do 
II 
B 
amx 
49 
36.7 
5 
J«iy 5 
II 
B 
cm (x)h 
( 9 ) 
0 
6 
do 
II 
(B) 
cp (x) 
( 9 ) 
0 
7 
June 8 
II 
a, control 
(9) 
0 
8 
June 11 
II 
B 
bm(y) 2.5* 
85 
24. 7 
9 
do 
II 
B 
bn (y) 2.5ft 
98 
2 
10 
(June 11) 
II 
b2.5 (control)^ 
W 
0 
a The numbers given indicate in centimeters the length of the plumules in Nos. 1 and 3, and the 
average height of the plants in Nos. 8 and 9. In the latter case the plants were mostly unbranched as 
yet. In Nos. 10 and 11 the plant were younger than in No. 3. 
b Kept outside in cloth bag through the winter at Amarillo, 
c Planted apart from the rest to avoid contamination from inoculated rows. 
Inoculations by the author, assisted by Dr. N. E. Stevens. 
« These numbers indicate the time, in days, between setting the seed to germinate and inoculating and 
planting it. 
/ Inoculations performed by Dr. E. M. Freeman and Mr. J. H. Parker. 
9 Plants not counted. 
h This number indicates the approximate length of the plumules in centimeters at the time of inoculation 
and planting. 
