| Cultural Characters | T. harzianum | T. viride | Trichoderma spp |
|---|---|---|---|
| Mycelium | Hyaline | Mycelium not visibe to at the naked eye | Hyaline |
| Colony colour | White and scattered greenish patches became visible as the conidia formed | Dark green | Grass green |
| Colony propagule | Luxuriant with regular cottony growth | First growing conidia spreads vigorously | First and vigorous growth |
| Pigmentation | No | No | Yellow pigmentation observed |