Collaborative Development of a Circular Economy Model through Bamboo Sawdust Utilisation for Oyster Mushroom Cultivation

Abstract

Bamboo sawdust generated by bamboo processing in Banu Ayu Village has potential as a substrate for oyster mushroom cultivation. This activity aimed to describe the development of a circular economy model through collaboration among PT Pertamina Patra Niaga Fuel Terminal Baturaja, the Faculty of Agriculture at Baturaja University, students, and the community. Activities took place at the faculty’s research garden using a descriptive approach supported by cultivation practice. The stages comprised material identification, substrate formulation and bagging, heat treatment, inoculation, incubation, maintenance, and harvesting. Photographic documentation shows substrate preparation, mycelial growth, fruiting body development, and stakeholder involvement. Reported parameters included a baglog success rate of at least 85% and yields of 0.6–0.8 kg per baglog over 3–4 months with 4–6 flushes. These figures require confirmation as measured outcomes or technical benchmarks because baglog counts and harvest records were not specified. The proposed model connects bamboo sawdust utilisation, mushroom production as an economic output, and the planned use of spent substrate as a material for organic fertiliser. The activity indicates potential for waste utilisation and collaborative learning but does not establish increased household income or a zero-waste system. Further development requires standardised formulations, cultivation records, spent-substrate assessment, and evaluation of community benefits.