32 Research Bulletin No. p 
Fig. ]1. — Tuber rot of Red Cobbler variety produced by inoculation with 
Fusarium oxys[^onim ; A. B, external and sectional view of same tuber, in- 
cubated for 30 days at 12° C. ; C, D. external and sectional view of same tuber, 
incubated for 30 days at 25° C. 
