THE RED RASPBERRIES 



through the soil from plant to plant and is 

 able to live in the soil for some time after a 

 (diseased plant is removed. 



Crown gall nearly always comes into the 

 plantation on nursery stock. Plants with galls 

 on their roots should be discarded and a deter- 

 mined effort should be made to keep the plan- 

 tation healthy. 



Cane Blight is still another common 

 trouble which usually comes in on nursery 

 stock. Infected canes may apparently endure 

 the winter in fine condition but fail to start 

 into growth in spring. The diseased canes are 

 light in color with patches of fine dark stip- 

 pling where the spore-bearing organs appear. 



Blight may be spread by cultivation, on 

 pruning tools, or by pickers. Affected canes 

 should be cut and burned. Fortunately, good 

 cultural methods, including the removal of old 

 canes after the harvest season, will usually 

 hold cane blight in check. 



Cane Borers are found in many planta- 

 tions. The adult insect is about three-quarters 

 of an inch long with black body and yellow 

 neck or prothorax. In summer the female de- 

 posits eggs in the canes about six inches from 

 the growing tips. She then girdles each cane 

 above and again below the egg. The tip wilts 

 and finally breaks off, the wilted tip betraying 



47 



