Fig. 62. Potato Diseases. 



a. Early blight (after L. R. Jonej), 6. spores of the early blight fungus, c. silver 

 scurf, d. conidiophores and conidia of the silver sciirf fungus, e. and /. Fusarium 

 oxysporum wilt m tubers, g. chlamydos pores and one to several celled conidia of 

 F. oxysporum, h. conidiophores of F. oxysporum (g. and k. after Sherbakoff), t. Ver- 

 ticillium wilt (after Orton), 



