4 3 



Table 5. Effect of initial inoculum density of Fusarium oxysporum f . 

 sp . radicis-lycopersici and a composite of five antagonists on the 

 incidence of disease under field conditions. 





Inoculum density 



Antagonists 



Percentage of plants with lesions^ 



(chlamydo spores 



Planting date 



per plant ) x 



1 2 3 Mean 







50 



500 



5000 



mean 







50 



500 



5000 



mean 



0.0 0.0 0.0 0.0 



5.7 8.1 14.7 9.5 

 0.0 17.5 24.3 13.9 



15.0 42.8 53.9 37.2 



5.2a 17.1a 23.2a 15.1a 



0.0 1.0 1.2 0.7 



5.1 5.2 6.7 5.7 



3.8 1.3 8.6 4.6 

 1.7 5.4 14.3 7.1 

 2.6a 3.2 b 7.7 b 4.5 b 



x 20 ml of a chlamydospore suspension were injected into the soil 10 



cm from the plant. 



TMeans in same column with different letters differ significantly 



(P = 0.05) as determined by t test; data analyzed after transformation 



to arc sine Jx. 



Gonidia of each of five antagonists (three isolates of Trichoderma 

 harzianum , one isolate of Penicillium restrictum , and one isolate of 

 Aspergillus ochraceus) were added to the crown area of the transplant 

 at 5 X 10^ conidia of each isolate per plant. 



