Toxicity studies
PDA-Petri dishes (14 cm diameter) containing
6PP at concentrations ranging from 50 up to
400 mg l1 were prepared. Each plate was inoculated
at its center with a sterile paper disk (10
mm diameter, no. 268, Filtres Durieux) soaked
in a mycelial preculture prepared as described
above. Radial growth was measured versus time.