CURRANT AND GOOSEBERRY PESTS. 93 



Kemedies. — (1) Spray directly the mildew is observed 

 with Potassium Sulphide (Formula 23). (2) Gather and 

 burn fallen leaves. 



Cherry and Plum Leaf Blig^ht (Cylindrosporium 

 Padi).— This fungoid disease attacks the foliage of cherries 

 and plums in a young state, forming small, round, purple 

 spots, which ultimately turn brown, dry up, and cause 

 holes to be made in the leaves. The Morello Cherry is 

 specially liable to be attacked. 



Remedy. — Spray with Bordeaux Mixture (Foniiula 20 

 or 21) when the leaves begin to expand. 



Gummosis. — See chapter on " Plum Diseases." 



CHAPTER III. 



CURRANT AND GOOSEBERRY PESTS. 



A INSECTS. 



Black Currant Bud Mite (Eriophyes ribis). — This 

 almost microscopic creature has caused a great deal of 

 anxiety to fruit growere of late years. In some districts 

 it has been necessary to destroy the whole of the planta- 

 tion, so badly were the trees infested. The mite — it is 

 not an insect — can only be seen by the aid of a pocket 

 lens. It is cylindrical in shape, has four short legs, and 

 a short snout. The mites are to be found chiefly in the 

 buds, where they puncture the embryo leaves and suck 

 the sap, thus causing the cells to develop abnormally and 

 the buds to become swollen, more or less roundish and 

 plump, instead of pointed and thin. It appears that the 

 eggs begin to hatch out about March, and that the young 



