DISEASES OF SPECIAL CROPS 



95 



fruit a dirty appearance. The fungus attacks the fruit 

 late in the season, and is strictly superficial. It may be 

 easil}' rubbed oft with a cloth. The loss in ready salability, 

 due to the unsightliness of the fruit, is reason enough for 

 protective spray- 

 ings. 



The Bordeaux 

 mixture applied at 

 intervals of about 

 two weeks from 

 the middle of June 

 until the middle 

 of August is effec- 

 tive. 



Flyspeck (Lep- 

 tothyrium pomi 

 (Mont. & Fr.) 

 Sacc). — Growing 

 upon the surface 

 of the fruit and 

 forming numerous clustered black specks closely resembling 

 flyspecks, this disease causes disfigurement of the apple. 

 Though the disease is of very wide distribution, the loss 

 occasioned by it is not serious and is almost entirely pre- 

 vented by the sprayings employed against other diseases. 



Coniothyriose {Coniothyrium Fuckelii, Sacc). — A rot 

 upon fruit very similar to bitter rot, and a twig blight 

 very similar to Sphaeropsose is caused also by Coniothy- 

 rium. This disease is of less importance than the others 

 mentioned, and the remedies already given suffice. 



Volutellose {Volutella frucH S. & H.). — In general 



Fig. 38. — Apple flyspeck. Original. 



