**8. Conclusion**

*Trichoderma* is an excellent bio-control agent and also plant growth promotion. *Trichoderma spp.* serves as a bio-control agent due to effective against a large number of soil-borne plant pathogenic fungi and effects on some root nematodes. *Trichoderma* isolates improved the growth of root length, plant height, roots and shoots fresh weight and dry weight of plants. *Trichoderma* is effective against abiotic stresses and provides tolerance to the abiotic stresses and increases fertilizer used efficiencies. *Trichoderma* species have the potential to produce several enzymes that can degrade the cell wall and release several fungi toxic substances that can inhibit the growth of the fungal pathogens. A single application of *Trichoderma* give the long term efficacy as induces resistance against plants diseases. Applications of *Trichoderma* in nurseries and fields to suppress the soil-borne inoculums. The bioefficacy is the quality of *Trchoderma* products to ensure the betterment. *Trichoderma* formulations can be applied to dry seed treatment or seed biopriming for the control of several soil-borne diseases. *Trichoderma* has high efficiency and aggressiveness against *Macreophomina phaseolina, Aspergillus niger* and *Meloidogyne incognita. Trichoderma harzianum* has the best antagonism to *Macrophomina phaseolina* and *Aspergillu. niger*, while the *Trichoderma asperellum* is efficient in the reduction of nematode. *Trichoderma* has no harmful effects on the environment and non-target organisms and can be applied to most food crops. Bio-control technologies have disease control of the crops and these technologies minimize the usage of harmful chemical pesticides. *Trichoderma* strains play an important role in the bioremediation of soil that is contaminated with pesticides and herbicides having the ability to degrade.
