628 



Bulletin 8o. 



shoot or branch, and the uniform browning and dying of all the 

 leaves involved. In the trae fungous diseases, as the leaf blight 

 already described, the leaves become spotted and they eventually 

 turn yellow and fall ; but in thisfire-blight the leaves are uniformly 

 dead brown throughout, and they wither and hang upon the limb. 

 The bark of the diseased branches becomeshard, dry andshrunken. 

 Unfortunately, there is no remedy for this disease, save to cut off 



the affected parts 

 destroys the dis- 

 upon the tree ; 

 dinarily, the dis- 

 followed up in 

 it seems to be so 

 cles and to ruin 

 Insects . — T h re e 



and burn them. This treatment 

 ease, for it is local in its destruction 

 but other attacks may occur. Gr- 

 ease is not serious if it is carefully 

 this way, but in occasional years 

 prevalent as to overcome all obsta- 

 large blocks in the orchard, 

 insects are troublesome to quince 

 growers in western New York, the 

 borer, codlin moth, and quince 

 curculio. These are well 

 known invaders and it is 

 not necessary to make any 

 lengthy account of them 

 here. The borer, — -which 

 is particularly partial to the 

 quince — should be dug out. 

 If the trunks and crowns 

 are examined in May or 

 June and again in September 

 or October of each year, all 

 serious trouble may be 

 averted . It is doubtful if the 

 many strong smelling and 

 caustic washes which are 

 recommended are really efficient. Some growers recommend 

 tarred paper tied tightly about the crowns of the trees for the 

 purpose of keeping away the borers*. The following experience 



* Serious results often follow the use of tarred paper tied about trees, for 

 the bark is likely to die underneath the paper. This is especially true if the 

 paper is left on during the growing season, and the trouble seems to be 



12. — Quince knot caused 

 by the rust fungus. 

 An infrequent in- 

 jury of quince s/iools, 

 in appearance like 

 the black-knot of 

 plums. 



