FUNGI IMPERFECT] 



295 



therefore concerns itself primarily with a maintenance of condi- 

 tions as dry and cool as is compatible with satisfactory growth, 

 and also with matters of general sanitation, such as proper ven- 

 tilation, destruction of diseased parts, and all defective specimens, 

 leaves, and other refuse. Affected buds should also be picked 

 off and burned. Susceptible varieties should not be grown where 

 the disease prevails. 



VI. A PINK ROT FOLLOWING APPLE SCAB 

 Cephalothedum roseum Cda. 



CRAIG, JOHN, and VAN HOOK, J. M. Pink Rot. An Attendant of Apple Scab. 



Cornell Univ. Agl. Exp. Sta. Built. 207: 199-210. Jigs. 36-40. 1907. 

 EUSTACE, H. J. A Destructive Apple Rot Following Scab. N. Y. Agl. Exp. 



Sta. Built. 227 : 367-389. pis. 1-8. 1902. 



FIG. 130. PINK MOLD FOLLOWING APPLE SCAB. (Photograph by John Craig) 



During several seasons, particularly the autumn of 1902, apple 

 scab was very prevalent in western New York, favored by a moist, 

 muggy season. The scab was followed in the autumn by the devel- 

 opment of a mold upon the scab spots (Fig. 130), which was at 

 first white, becoming pink with a production of abundant spores. 

 The fungus was identified as above, and proved to be common in 

 many orchards of the state. It is a widely distributed saprophyte, 

 which can be expected perhaps to cause widespread injury only 

 when conditions are unusally favorable for its development. The 

 greatest damage is done after harvesting, and the Rhode Island 

 Greening has proved to be the variety most susceptible to its attack. 



