Quote:
Originally Posted by RayR
It really depends on what kind of blight that is hitting your plants. If it's a leaf and stem pathogen, the spores in the soil are harmless unless they get splashed onto the above ground parts of the plant.
Mycorrhizal fungi are known to produce antibiotics that protect the roots but also they have been shown to enhance the resistance of tomato plants against Early Blight infections on the leaves and stems.
Trichoderma fungi will also inhabit the rhizosphere, they are mycoparasites that can protect the plant from invading fungal pathogens that attack through the roots. They will also feed on mushroom species like white-button's too if they get a chance.
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I wish I could grow some kind of endo-mycchoriza myself, plus I wish I could find some that turns into mushrooms instead of just growing grass all year and then assuming the soil under it is rich in mychoriza.