46 



susceptible to cedar rustj otherwise it is comparatively 

 free from disease. The most frequent disease of Winesap is 

 scab. Albemarle is susceptible to Bitter Rot; this point 

 was noted by many growers. Grimes is attacked by collar rot, 

 Bitter rot is the most common disease of Ben Davis. Stayman 

 Winesap is not mentioned by any grower as being susceptible 

 to disease. 



A comparison of Sables 7 and 8 brings out the fact 

 that many of the varieties mentioned as disease resistant 

 in the former are catalogued as susceptible to disease in 

 the latter. The point which I mentioned in discussing the 

 data in Table 7 applies here also; the answers were compara- 

 tive and of course the growers could make the comparison 

 only between such varieties as they were growing. Since a 

 few varieties constitute the bulk of the plantings in the 

 commercial orchards, we would naturally expect the compari- 

 son to be drawn between these varieties. 



