44 



WEEKS AFTER 



15 

 PLANTING 



Figure 8 - A. Relationship of population density of Fusarium oxysporum 

 f . sp. radicis-lycopersici to time after planting in soils amended with 

 three isolates of Trichoderma harzianum , one isolate of Penicillium 

 restrictum , and one isolate of Aspergillus ochraceus at 5 X 105 conidia 

 per isolate per plant under field conditions at planting date one 



(0"""0) , planting date two (X- X) , and planting date three (#— — #) . 



The pathogen was added initially at 5000 chlamydo spores per plant. 



