CHAPTER XIV 
RASPBERRY DISEASES 
Nor infrequently raspberry diseases have been factors in 
driving the bush-fruit growers out of the business. Crown- 
gall is very destructive to raspberries, although its injury to 
trees like the apple and peach is questioned. Orange rust is 
very damaging to black-caps, and yellows is extremely common 
everywhere. Anthracnose, cane-blight and root-rot are trouble- 
some in many localities where this fruit is grown. 
Crown-GALL 
Caused by Bacterium tumefaciens E. F. Smith and Townsend 
Note should be taken of the fact that crown-gall occurs on a 
great variety of plants (see list on page 112). In certain states, 
for example New York, the trouble affects the raspberry more 
commonly than any other plant. It is also more destructive 
to the raspberry, in many cases, than to the apple, peach, grape 
or other fruits. While no variety appears immune, the disease 
is particularly common and important on the red varieties like 
the Cuthbert and London. It is said to cause considerable 
damage in the State of Washington; and records of it come from 
several other states indicating its wide geographical range in 
the United States. It was observed in Ohio as early as 1894. 
A more detailed discussion of crown-gall will be found under 
Apple, page 108. 
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