390 OHIO EXPERIMENT STATION: BULLETIN 214 
Stem Blight of clover has recently been studied at the Station and has been 
found to be due to the same fungus as that of wheat scab (Fusarium roseum Lk.). 
This fungus has been found to cause the death of seedling wheat plants and to 
follow harvest by attacks on clover stems. (See Bulletin 203). It appears at 
this time to be one of the serious forms of clover sickness. The writer looks 
upon it as liable to be much more 
serious even than anthracnose. The 
only present suggesion for control 
will apply to control of the wheat 
scab fungus through recleaning of 
seed and separation of of all scab 
infected kernels. It is quite likely 
that clover seedings made in a dry 
year with little grain scab will not 
be exposed to the same danger from 
this blight as those made in wet 
seasons when the disease is very 
bad inthe grain. (See wheat scab). 
CORN 
Bacterial Disease. This has been 
described and illustrated in Bul- 
letin 6 of the Illinois Experiment 
Station, 1889. The malady infests 
; both younger and older plants. In 
y ( aes j the younger it causes a yellowish 
— sl coloring and a general appearance 
; Fig, 44. Red clover stems suffering from stem of debility, with death of the leaves, 
sickness. The grayish spores in the lesions are those : 
of the fungus of wheat scab. From Bulletin 203, commonly from the point backward. 
After midsummer, spots appear on 
the exterior of the sheaths which are more conspicuous on the inner side and at 
times more or less smeared with a gelatinous substance. No successful remedy 
has as yet been proposed. 
Dry-Rot or Mold. The dry-rot or mold of corn (Diplodia zeae (Schw.) Lev.) was 
investigated by this Station in 1906, it being reported by a grower in Licking Co. 
He stated that he had been studying the development for two years; the first time 
noted, the mold area was small involving but part of one shock; the next year a 
larger area had been invaded and the year of 1906 he reported his losses were 
still greater. He reported that conditions clearly indicate the invasion of the 
soil by the parasite and possible infection through the growing plant. Asin 
this case from Licking county and many others in which continuous corn grow- 
ing is practiced on rather moist soil, there is great danger from accumulation or 
infection. The ears attacked were marked by adherence of the husk and the uni- 
form moldy covering matted the kernels together upon the ear and destroyed the 
feeding value. 
In the matter of prevention little can be done beyond avoiding continuous 
cropping of corn for invaded areas. For life history of the fungus see Circular 
117, Illinois Experiment Station; 22nd Annual Report, Nebraska Experiment 
Station, 1908. 
The Leaf Blight Fungus (Helminthosporium graminum Rab.) has been noted 
on corn and has recently been sent to this Station from Vinton county, in the 
latter case upon sweet corn. The fungus causes somewhat extended, or elliptical 
