rm$ 



Fig. 



vSvveet Potato Diseases. 



a. Trichoderma rot, b. Septoria leaf spot, c. soil stain d Charcoal rot t 

 root rot: notice the center of the hill is dead, while the side'shoots are alk' P ** 

 are supported by the secondary roots form'ed a{ the d e 7 e vin s fUert 

 potato artificially moculated with Sclerotmm Rolfsii, g. net necrosis. 



