Pemanfaatan Limbah Kardus dan Pupuk Organik Cair Sebagai Campuran Media Tanam Pertumbuhan Jamur Tiram Putih (Pleurotus ostreatus)

White oyster mushroom (Pleurotus ostreatus) is one of the fungus that used for groceries because nutrition content and better than the other mushrooms. Efforts to increasing production of the fungus are still under studied, for example by the use of a mixture planting media and application of liquid organic fertilizer. The purpose of this study was to determine the effect of mixed plant media types, the application of liquid fertilizer and the interaction of both for the growth of white oyster mushroom. This research activity was conducted at Agrojamur Mushroom House of Baturaden Sub-district, Banyumas Regency. The experimental design conducted by using a complete randomized block design (RBD) consist of two factors and three replications. The first factor was the type of a mixture planting media and the dose of liquid organic fertilizer. The variables observed in this study are when the fruit body appears, the number of whole mushroom fruit body, water content of the fungus, fresh weight and dried mushrooms during harvest. The results showed that the treatment of planting media composition using sawdust without piece of cardboard were able to increase the fresh weight of mushroom, dry weight of mushroom, and number of mushroom fruit body. Treatment using mixed planting media (25% sawdust + 75% cardboard) was able to increase the timing of fungal fruit body appearance compared with other treatments. Application of liquid organic fertilizer and the interaction between the two treatments did not have a significant effect for the growth of white oyster mushroom.