New York Agricultural Experiment Station. 215 



in a plantation five years old. The owner states that it occurs 

 chiefly in old plantations, those two and three years old usually 

 being exempt. It is worst on high ground and occurs in wet 

 seasons as well as dry ones. The canes commenced to die about 

 the time the fruit began to ripen. Often the entire cane was 

 affected, but frequently only a part of it. Healthy and diseased 

 branches occurred on the same cane. Sometimes a cane would 

 be dead upon one side and in a semi-living condition upon the 

 other. The pycnidia of the Phoma were to be found on almost 

 every affected cane, and where one was killed back only part way 

 the pycnidia would be clustered just above the boundary between 

 the living and the dead tissue. 



At Voorheesville the disease was noticed attacking also red 

 raspberries of the variety Cuthbert. Berries, leaves and wood 

 suddenly dried up while the fruit was ripening. Usually, but not 

 always, the whole cane was affected. At some point on the cane 

 there were numerous pycnidia of the same Phoma found on black 

 raspberries. When only a portion of a cane was affected the 

 pycnidia Avere commonly clustered (as on black raspberries) just 

 above the boundary between the diseased and healthy bark. On 

 the red raspberry the pycnidia appear to the unaided eye some- 

 what different from those on the black raspberry. 



A disease having the same symptoms attacks the Marlboro, a 

 red variety extensively planted in the Hudson Valley. On this 

 variety it is especially destructive and is everj^where known as 

 " the Marlboro raspberry disease." A bad case of this was observed 

 at Delmar, but the examination was so hasty that little can be said 

 concerning it. It is certain, however, that the Phoma was not 

 so abundant as in the previously mentioned cases. At this place 

 the yellow variety, Golden Queen, was also attacked by it. 



At "West Sand Lake it was destructive on the variety Shaffer, 

 being worse in the older portions of the plantation. Correspond- 

 ents report it from various other localities. It is a widespread and 

 destructive disease. 



