ABSTRACT
Biological control has been considered a viable alternative method to manage plant diseases of horticulture crops. It is the inhibition of growth, infection or reproduction of disease causing pathogens by antagonists/bio-control agents. Antagonists compete with pathogens for space, minerals and organic nutrients to proliferate and survive in their natural habitats. The antagonistic potential serves as the basis for effective biological control applications of different Trichoderma strains as biofungicides against soil, foliar and vascular pathogens, as an alternative to chemical pesticides for treatment against a wide spectrum of plant pathogens, as well as to increase resistance to abiotic stresses. Soil samples should be collected from a field where the pathogen is known to be present but disease occurrence is low. Morphological characters used in specific recognition in Trichoderma is primarily based on the angle at which branches and phialides are borne.
