II 18 25 32 



DAYS AFTER FUMIGATION 



39 



Figure 



The relationship of percentage of infection of tomato ( 'Bonnie 

 Best') (•■■»•) and inoculum density of Fusarium oxysporum f. sp. radicis- 

 lycopersici (oillio) to time after fumigation of soils which were amended 

 with three isolates of Trichoderma harzianum , one isolate of Aspergillus 

 ochraceus , and one isolate of Penicillium restrictum at 1000 conidia of 

 each isolate per gram of soil; the pathogen was added k days after 

 fumigation at 1000 chlamydospores per gram of soil. 



