| Summary: | Six different fungal strains/isolates were selected after conducting a series of experiments of isolation and screening
to evaluate their successful adaptation and growth to domestic wastewater sludge and its efficient bioconversion into
compost. Two different fungi were grown in the same petri dish 4 cm apart in two culture media, potato dextrose
agar (PDA) and malt extract agar (MEA). Fifteen different in-vitro interactions were studied and summarized
according to five possible outcomes, i.e., mutual intermingling, partial mutual intermingling, inhibition at contact
point, inhibition at a distance and replacement. The interaction of Trichoderma hazianums Rifai with Phanerochaete
chrysosporium 2094 was identified as mutual intermingling. The partial mutual intermingling of T. hazianums with
Mucor hiemalis Wehmer suggested compatibility of the two strains without showing any abnormal effects. Perhaps
these two combinations may interact mutually in any mixed culture programme. The fungal strain Aspergillus
versicolor Vuill performed as a strong repellent and all interactions exhibited deadlock/inhibition at a certain
distance. The isolate RW-Pl 512 from the gill of a basidiomycete from a rotten wood stub actively replaced the
strain M. hiemalis in in-vitro culture.
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