TWE BLACKBERRY 179 



ductiveness. It promises well for the Middle 

 States, but like its parent is probably too ten- 

 der for higher latitudes. 



Root and stem borers affect both the rasp- 

 berry and blackberry, though not to a serious 

 extent. When the tips of the canes are observed 

 suddenly to droop in June, they should be cut at 

 a little distance below the withered part, to in- 

 sure the destruction of the egg or larva. Canes 

 that appear to be infested should be cut out in 

 the fall, or spring. 



The Bramble Flea-louse (^Psylla rubi) often 

 infests the foliage of the blackberry, causing 

 great injury in many locations and to some vari- 

 eties, especially the Kittatinny. Strong tobacco 

 water would probably destroy it, when young. 

 Caterpillars and slugs which feed upon the foli- 

 age may be held in cheek by syringing with helle- 

 bore or the other solutions, as may be found 

 necessary. 



Raspberries and blackberries are affected by 

 the fungus Cane Rust or Anthracnose, which 

 is very destructive in some sections, spreading 

 over the canes and leaves. Spray early in the 

 season with sulphate of iron, and later with 

 sulphide of potassium. Burn the canes if 

 much infested. 



