New York Agricultural Experimbnt Station. 209 



affected by the disease show brown, black or bluish discoloration 

 of the bark in areas from one to four inches long and extending 

 half to two-thirds or more of the way around the cane. 



This raspberry cane blight appears to be an important disease 

 which has been misunderstood by fruit growers and neglected by 

 pathologists. It will be made the subject of a special investiga- 

 tion during the coming season. 



Other Diseases. — I^af spot (Septoria ruii) was common but 

 did little if any damage. Crown gall is common and often de- 

 structive. In this State crown gall is probably more destructive 

 to the raspberry than to any other plant. It is particularly 

 destructive to the red varieties; for example, Cuthbert and 

 Loudon. 



Occasionally one meets with raspberry plants on which the 

 foliage is yellow, dwarfed and curled. The cause is unknown 

 to us. 



STRAWBERRY DISEASES. 



The only strawberry disease observed in 1900 was leaf blight 

 (Sphwrella fragario)) a little of which could be found in almost 

 any strawberry bed, but it does not appear to have been destruc- 

 tive anywhere. 



14 



