RASPBERRY DISEASES 411 
Later reports indicate that raspberry cane-blight now has a 
very general range in the plantations throughout New York 
State. Its geographical distribution over the United States 
is not well known, but it is doubtless common throughout the 
country. It has been seen in Ohio, Wisconsin, Connecticut 
and a few other states. 
The chief damage is done to the fruiting canes. New canes 
are attacked, however, and occasionally are killed during the 
first season of their growth. This is not the most important 
raspberry disease generally, and rarely is a whole crop lost. 
On the other hand, few plantations are entirely free from it, 
in New York at least, and cases are on record where one-fourth 
to two-thirds of the crop was lost through the effects of cane- 
blight. It may easily be imagined that the aggregate losses in 
the country must be considerable. It is said that cane-blight 
is often partly responsible for the early decline in the pro- 
ductivity of both the red and black raspberry plants. Death 
of the affected canes at the point of attack results in a wilting 
of both the cane and its foliage. Hence, the disease is some- 
times called raspberry cane-wilt. In such cases the berries 
become dry and worthless. In many instances the berries are 
attacked directly, resulting in a dry rot. 
The disease affects nearly all of the red and black varieties, 
and perhaps also the dewberry and wild red raspberry (Rubus 
strigosus). There is nothing to indicate the occurrence of 
cane-blight on the blackberry, except on wild species. Among 
the commercial raspberries, the Cuthbert variety probably 
suffers most. Other varieties, such as the Marlboro, Ohio, 
Gregg, Kansas, Superlative, Pridé of Geneva, Parmer and 
Cumberland, are affected considerably. The Columbian is 
notably resistant. 
Symptoms. 
Observations indicate that the disease may be expected to 
appear in neglected and well-managed plantations alike. The 
