Research Bulletin No. p 



A 



C 



B 



D 



Fig. 11.— Tuber rot of Red Cobbler variety produced by inoculation with 

 / usarium oxysponwi , ./. B. external ami sectional view of same tuber, in- 

 cubated tor 30 (lavs at 1'.' C. ; C, D, external and sectional view of saim tuber, 

 incubated for 30 daj s al 25 ( 



