388 



MANUAL OF FRUIT DISEASES 



FIG. 112. Fire-blight on quince. 



varieties are sus- 

 ceptible. The fire- 

 blight disease is dis- 

 cussed in detail 

 under Pear (page 

 323). A special 

 consideration of 

 nursery quinces 

 should supplement 

 the treatment as 

 outlined for fire- 

 blight of the pear. 

 To avoid blossom- 

 blight it is regarded 

 as good practice to 

 remove all blossom- 

 buds from the two- 

 year-old quince 

 trees ; this should 

 be done before the 

 flowers open to 

 avoid initial infec- 

 tion. 



LEAF-BLIGHT 



Caused by Fabrcea maculata (L6v.) Atk. 



This disease occurs also on the pear, to a discussion of which 

 the reader is referred for additional facts and data (page 347). 

 On the quince the leaf-blight disease is also called black-spot, 

 fruit-spot and scald. It was reported from France in 1815, 

 and has a long history in America, now being found in practi- 

 cally all nursery and orchard districts in the Appalachian 

 region. The disease is probably ever present on the quince, 



