Trichoderma - Killing Bad Fungus with a Good One

[orchids3]

Have read that tricoderma is used on corn corps both on seeds before they are planted and as a spray after growth. Could that be the reason it is common in corn meal? It is said to promote root growth and encourage Nitrogen uptake as well as preventing bad funus attack.
Have found a Biotech company that offers tricoderma both in the liquid and powdered form. They are sending me a sample. Have a covered test of wet corn meal in the greenhouse - my wild bird seed got moldy due to wet conditions so added a sprinkling of that to the corn meal. When the tricoderma gets here and the corn meal gets moldy will spray the surface and see what develops. Also have a few orchids that would go in the trash - there are culls from a flask. Will apply the tricoderma and observe the result.
Am seeing some opinions that tricoderma may attack other pathogens than just fungus.