740 Popular Editions of Station Bulletins. 



Some diseases of apples, like fire blight, are prac- 

 Disease- tically uncontrollable by any means the orchardist 

 resistant yet knows; and others, like scab, while no longer 

 varieties dreaded by the commercial apple-grower, since 

 they can be readily controlled, are destructive in 

 home orchards or village gardens where spraying is not always 

 feasible. On this account varieties that are even partly resistant 

 to such diseases possess at least one character to commend them. 

 Notes have been taken at the Station as regards the behavior of 

 the different varieties in respect to blight and scab; and marked 

 differences have been found in susceptibility. The disease-resistant 

 varieties, are, in many cases, of themselves worthy; so the lists below 

 will be of some use to those about to plant, but they will probably 

 be more useful to breeders; for it is possible — in one case it seems 

 proven — that disease resistance is inherited like any other character. 

 If this be true, breeding for this quality would present no impos- 

 sibilities, though, like all other breeding work, it may be slow, since 

 with the resistance we must secure the combination of many other 

 desirable characteristics. 



Susceptibility of Apples to Apple Scab. 



Relatively immune. Relatively susceptible. 



Ben Davis Bellflower 



Black Giliiflower Chenango 



Gano Esopus 



Gravenstein Fall Pippin 



Grimes Fameuse 



Hubbardston Green Newtown 



Jonathan Hawley 



Oldenburg Lady 



Red Astrachan Lady Sweet 



Rome Maiden Blush 



Roxbury Russet Mcintosh 



Sutton Northern Spy 



Swaar Red Canada 



Tolman Sweet Rhode Island Greening 



Tompkins King Twenty Ounce 

 Wagener 

 Wealthy 

 Yellow Transparent 



Susceptibility of Apples to Apple Blight 

 Immune in 1906 (blight very common). Very susceptible. 



Baldwin Black Giliiflower 



Cox Orange Constantine 



Delicious Esopus 



Grimes Fall Pippin 



Lady Jonathan 



Northern Spy Rhode Island Greening. 



Swaar Rome 



Sweet Bough Sutton 

 Fompkins King 

 Twenty Ounce 

 Wagener 



