Generally speaking, T. harzianum was more effective than T. viride, under our experimental conditions. The variability between these two species may be due to some reasons, among which are the genetic variability, the pathogenic capabilities, and the origin of the isolate.
Our results were obtained under the greenhouse conditions and in an autoclaved soil. Therefore, they cannot be extrapolated integrally to the field conditions where natural soil plays a very important role in the efficacy of any biocontrol agent of nematodes. However, our results are very encouraging to observe the suppressiveness effects of these two local isolates, for the first attempt, on M. javanica reproduction and its damages on tomato. These results provide strong support for exploring further the use of such promising indigenous isolates, and this is what we have been conducting at present time.