Vol. XXI, No. 9 
652 
Journal of Agricultural Research 
Table I .—Results of germination of Honduras rice in soil inoculated with Scleroiium 
rolfsii from rice , soybean , tall oat grass, and wheat; sowmgs made on May g, igzo, 
and counts taken May 22 
Can 
No. 
Source of fungus. 
Treatment. 
Percentage 
of germi¬ 
nation.« 
Number of 
plants 
chlorotic. 
Number of 
plants 
dead 
before 
irrigation. 
I 
Rice. 
Inoculated. 
2 5 
71 
3 
2 
.do. 
Control. 
T. 
.do. 
Inoculated 
40 
55 
37 
28 
24 
33 
33 
44 
IO 
4 
Control 
4 
5 
6 
.do. 
Inoculated 
5 
5 
4 
3 
7 
10 
3 
.do. 
.... do. 
7 
8 
.do. 
.... do .. 
.do. 
.... do .... 
Q 
.do. 
.... do . .. 
5 
10 
.do. 
4 
I 
Tall oat grass. 
79 
7i 
2 
.do. 
3 
3 
.do. 
.... do 
4 
.do. 
.... do . . 
/ u 
63 
78 
58 
66 
73 
71 
57 
55 
59 
48 
62 
63 
58 
69 
71 
72 
34 
36 
34 
34 
2 3 
18 
35 
£5 
74 
59 
7 
5 
6 
.do. 
.... do . 
8 
3 
3 
.do. 
7 
8 
.do. 
O 
Control 
10 
I 
I 
Soybean. 
Inoculated 
2 
3 
1 
4 
4 
.do. 
5 
6 
.do. 
3 
I 
7 
8 
.do. 
0 
0 
O 
.do. 
Control 
10 
.do. 
0 
I 
Wheat. 
Inoculated 
5 
10 
4 
3 
4 
3 
5 
0 
2 
_ do . 
0 
3 
.do. 
_ do . 
4 
5 
.do. 
6 
7 
8 
.do. 
0 
0 
Control 
9 
1 
10 
0 
0 
a Controls arc given in boldface type. 
Table I shows that the percentage of rice germination was considerably 
reduced where the soil was inoculated with Sclerotium rolfsii from rice 
and wheat, while strains of the organism from soybean and tall oat had 
but little effect on germination, although some of the seedlings were 
diseased. The average gemination in soil inoculated with the rice fungus 
was 33 per cent, as compared with 63 per cent in uninoculated soil. 
There was an even more striking difference where the soil was inocu- 
