120 



POPULAR FRUIT GROWING. 



Red Orange Rust (Gymnoconia inter stitialis) is most harm- 

 ful to the Black Cap raspberries, though it frequently injures 

 blackberries, dewberries and allied plants. It produces a 

 weak appearance in the canes and foliage, and in the latter 

 part of the summer the under side of the foliage 

 becomes completely covered with a thick coat- 

 ing of orange colored spores, which easily rub off. 

 One soon learns to know the plants that are dis- 

 eased, even before the spores appear, and they 

 should be pulled and burned at once. This is es- 

 pecially neecessary with the black-cap varieties; 

 but even with these, if the affected plants are 

 destroyed, the disease may generally be kept in 

 check until a new plantation can be well started, 

 and sometimes assiduous attention to pulling and 

 burning results in stamping out the disease. 



Crown Gall is sometimes injurious to the rasp- 

 berry the same as to the blackberry, but it is sel- 

 dom very injurious at the North. In selecting 

 new sets care should be taken to avoid those from 

 infested fields. 



Cane Rust or Anthracnose (Gloesporium, neca- 

 tor) manifests itself on the raspberry by small 

 purplish spots, which may spread and form whit- 

 ish patches with purplish edges. The tissue is 

 killed out under the spots. It affects raspber- 

 rust on~r^sp- ries gen-erally, but the purple and cap varieties 

 berries. are mO st liable to its injury. 



Remedy. The best treatment is to spray the canes before 

 the leaves start with thick Bordeaux mixture. The badly dis- 

 eased canes should be cut out at pruning time and only resistant 

 varieties planted. Spray the new growth in the spring once or 

 twice. There is a great difference in the power of different varie- 

 ties to resist this disease. 



Diseases of the Gooseberry and Currant. 

 Mildew (Sphaerotheca morsuvae) is the worst disease of 

 the gooseberry. It attacks the foliage which, as a result, be- 

 comes covered with a whitish mould. Later the leaves dry up 



