The amount of Husk and Straw along with Rubber Tree Sawdust for Substrate to Culturing Bhutanese Oyster Mushroom (Pleurotus pulmonarius)
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Abstract
This study investigated the use of different mixtures of Rice husk and rice straw, along with rubber tree sawdust, for the cultivation of Bhutanese oyster mushroom (Pleurotus pulmonarius) through a Completely Randomized Design (CRD) with 5 treatments and 3 replications. The treatments included: 1. rubber tree sawdust 100%(control) 2. rubber tree sawdust 50 : rice husk 50% 3. rubber tree sawdust 80 : rice husk 20% 4. rubber tree sawdust 80 : rice straw 20% 5. rubber tree sawdust 33.3 : rice husk 33.3 : rice straw 33.3%. The results showed significant differences in mycelial growth, number of harvests, fresh weight, and length of stalk among the treatments. Treatment 2 (rubber tree sawdust 50: rice husk50%) exhibited the fastest full colonization time at 19.86 days, while Treatment 5 (rubber tree sawdust 33.3: rice husk33.3: rice straw 33.3%) took the longest at 22.91 days. Treatment 3 (rubber tree sawdust 80: rice husk20%) yielded the highest number of harvests, while Treatment 5 (rubber tree sawdust 33.3: rice husk33.3: rice straw 33.3%) yielded the least. For fresh weight, Treatment 3 (rubber tree sawdust 80: rice husk20%) had the highest yield, followed by Treatments 1, 4, 2, and 5 in descending order. Regarding the length of the stalk, Treatment 3 (rubber tree sawdust 80: rice husk20%) had the longest stalks, followed by Treatments 1, 4, 5, and 2. In conclusion, the study suggests that Bhutanese oyster mushroom can be cultivated using a substrate mixture of 80% rubber tree sawdust and 20% Rice husk or 100% rubber tree sawdust without significant differences in yield compared to using 100% rubber tree sawdust alone.
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