140 SMAXL FRUIT CTTLTURIST. 



No rule or set time should be heeded in this matter, but 

 so soon as the plants fail to produce remunerative crops, 

 plow them up and plant some other crop upon the soil, for 

 two or three years, after which it may again be planted 

 with Raspberries if it is desirable. 



DISEASES AND INSECTS. 



The Raspberry is seldom affected, to any considerable 

 extent, by disease. Occasionally the leaves and stems will 

 be affected with rust, in wet seasons, when cultivated upon 

 soils of a compact nature. The Raspberry plantations in 

 Orange, Ulster, and adjacent counties in New York, have 

 been for several years past affected more or less with a 

 kind of rust, which seems to prevent the canes from ripen- 

 ing, and the result is, that they decay in winter, although 

 carefully protected. The nature or cause of this rust or 

 disease I have not been able to ascertain, but it is very 

 probable that thorough under-draining and replanting upon 

 fresh soil would check, if not entirely eradicate it. The 

 Red Antwerp Raspberry has been extensively grown in 

 these counties for the past thirty or forty years, and it 

 would indeed be very strange if disease or insects did not 

 make their appearance after so long a time, and particularly 

 where one variety is grown so extensively as in the region 

 named. It is quite probable that a few unfavorable seasons, 

 or the want of proper cultivation has been the cause of this? 

 disease, and that it will not become known away from the 

 locality where it originated. 



Leaf blight or rust is very common upon the wild Rasp- 

 berry and Blackberry, and sometimes upon the cultivated, 

 particularly upon old and feeble plants. The general ap- 

 pearance of this rust, or Raspberry brand, as it is called 

 in England, is like that desciibed under the Strawberry, 

 p. 83, but it shows a different form under the micro 

 scope. 



