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Detached leaf method to evaluate P. variotii as biological control agent against B. cinerea. (A) control leaves four days post infection with B. cinerea; (B) Leaf inoculated with spores B. cinerea and P. variotii. Photographs were taken four days after incubation in a moist petri dish at 20 °C under continuous white light. (C) Dual culture assay for in vitro inhibition of mycelial growth of B. cinerea by P. variotii.
