518 
Journal of Agricultural Research 
Vol. XXIII, No 7 
Table II .—Distribution and prevalence of fungi internal of seed corn —Continued 
No.® 
State and variety. 
Cepha- 
lospo- 
rium 
sac- 
charf. 
Gib- 
berella 
sau- 
bieniit. 
Fusa- 
rium 
monili- 
forme ■ 
Di- 
Plodia 
zeae • 
Other 
fungi. 6 
Germination. 
Strong. 
Weak. 
3 1 6 
317 
318 
319 
3 2 ° 
3 21 
3 22 
3 2 3 
3 2 4 
3 25 
326 
32 7 
328 
329 
330 
331 
332 
333 
334 
335 
336 
337 
338 
339 
340 
341 
342 
343 
PENNSYLVANIA 
Johnson County White . 
40 
IOO 
} 9° 
go 
IOO 
IOO 
Landis White . 
IO 
/ 1 IO 
\ 3 20 
IO 
IO 
Reid Yellow Dent . 
20 
College White Cap. 
Greene County Yellow Dent.. 
Clouds Yellow Dent. 
20 
IOO 
20 
Golden Yellow Dent . 
IOO 
IOO 
90 
80 
IOO 
IOO 
IOO 
IOO 
| 20 
20 
. do . 
. do . 
IO 
. do . 
3 90 
Lags Clapper . 
Johnson County White . 
TEXAS 
Johnson County White . 
60 
50 
40 
IOO 
60 
70 
80 
IOO 
f * 20 
\ 3 20 
h 3 6o 
*8o 
8 60 
b 3 40 
1>8 75 
1 40 
80 
80 
® IOO 
40 
IOO 
80 
70 
Chesholm. 
20 
Sure Cropper. 
.do. 
20 
20 
60 
20 
30 
IOO 
IOO 
IOO 
IOO 
IOO 
IOO 
80 
WISCONSIN 
Variety not given. 
.do. 
IOO 
. do. 
l6 
60 
40 
20 
? tetters A, B, C, D, etc., indicate different ears from same source. 
6 The small numbers in this column refer to the following numbered fungi: i, Aspergillus spp.f 2f 
C laaosporium spp.; 3, Pentcillvum spp.; 4, Alternaria spp.; 5, Helminlhosporium spp.; 6, Rhizopus spp.; 
•j,i>ptcarta spp.; 8, Hormodendron spp.; 9, Torula spp.; 10, Chaetomium spp.; n, Colletotrichum cerealei 12, 
Hnriari'U.'m snn * 9 
INTERNAL INFECTION 
The evidence of internal infection in seed corn showing no external 
symptoms is suggestive with germinating kernels where the growth of 
the parasitic fungi is consistently observed at the germinal end. Even 
this evidence allows for error because of the possibility of surface organ¬ 
isms being present. In resorting to methods of thorough disinfection 
one still finds the presence of fungous growth appearing on the germi¬ 
nating seeds. The manner in which infection is carried in the seed has 
not heretofore been extensively investigated. Symptoms of kernels, as 
we have pointed out for the four parasites described, are easily recog¬ 
nized ; however, it is with normal-appearing kernels that we wish to 
establish the manner of internal infection. 
