FIG. 27. SWEET POTATO DISEASES. 



a. Trichoderma rot, b. Septoria leaf spot, c. soil stain, J. Charcoal rot, e. Texas 

 root rot: notice the center of the hill is dead, while the side shoots are alive as they 

 are supported by the secondary roots formed at the nodes of the vines, /. sweet 

 potato artificially inoculated with Sclerolium Rolfsii, g. net necrosis. 



