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50 



40 



S 30 



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II 18 25 32 



DAYS AFTER INFESTATION 



39 



Figure 7. 

 Best*) (1 



The relationship of percentage of infection of tomato ( 'Bonnie 

 "••) and inoculum density of Fusarium oxysporum f . sp. radicis- 



lycopersici (OHIIlO) to time in nonfumigated soils; the pathogen was added 

 on day 4 at 1000 chlamydospores per gram of soil. 



