CHAPTER V 

 CHERRY DISEASES 



THERE are several diseases of the cherry tree which, if left un- 

 curbed, may prove a serious menace to the growing of this fruit. 

 Most cherry diseases, however, yield rather promptly to control 

 measures a point very encouraging to cherry-growers. But 

 brown-rot often runs rampant, doing considerable mischief. 

 Other conspicuous and injurious troubles affecting the cherry 

 are leaf-blight, powdery-mildew and black-knot. These along 

 with several other cherry diseases are common to the plum 

 and peach. 



BROWN-ROT 



Caused by Sclerotinia cinerea (Bon.) Schrot. 



Cherries are subject to the same brown-rot that affects 

 peaches and plums. The trouble is extremely common on 

 all these fruits, although perhaps the cherry is less seriously 

 damaged than peaches and plums. White sweet cherries are 

 more susceptible than sour and native cherries. The general 

 statement is also made by authorities that the juicy, best- 

 flavored varieties are more commonly affected than others. 

 The Heiderman sand-cherry and Governor Wood both are 

 listed as especially susceptible to brown-rot ; on the other hand, 

 the Montmorency is relatively resistant. Susceptibility gen- 

 erally increases as cherries approach maturity. 



Brown-rot is the most destructive disease of cherries. It 



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