Fig. 58. Potato Diseases. 



a. Lecrf roll, b. curly dwarf (a. and 6. after Appel), c. net necrosis, d. spindly sprout, 

 e. black heart,/, hollow heart {d. to /. after Stakman and Tolaas), g. mosaic, /;. tip 

 burn (c g. and /;. after W. A. Orton). 



