The object of the present investigation was evaluated
actinomycetes and fungi isolated from plant-parasitic
infested soils; to evaluate their biocontrol potential in vitro
with M. incognita and to study their ability in controlling
fungal plant pathogens, including IAA and siderophore
production. The success of a good biocontrol agent requires
more than one parameter such as that it should kill the
pathogen over a long time, be persistent in the environment
and act against a wide range of plant pathogens. Moreover,
if the biocontrol agent can improve plant growth, it will be
very useful.