Production of oyster mushroom (Pleurotus ostreatus) from some waste lignocellulosic …【■■ Coffee (E)】The highest spawn run time (45 days) was determined in the compost prepared from the mixture of hazelnut husk and spent coffee ground wastes.2023.08.23 The highest spawn run time (45 days) was determined in the compost prepared from the mixture of hazelnut husk and spent coffee ground wastes.