Oyster mushroom constitute thirty per cent of total mushroom production and ranks third among the cultivated mushrooms grown widely in temperate, sub-tropical and tropical regions of the World. The present investigation was undertaken to evaluate the effect of nutritional medium medium, temperature and colour on mycelial growth behaviour of Hypsizygus ulmarius in vitro. | Assessment of various nutritional media, temperature and color on growth behavior of blue oyster mushroom in Odisha, India