A Competitive Study on Higher Yield Performance in Indoor Optimized Environment and Outdoor Cultivation of Pleurotus pulmonarius

Tariqul Islam, Zarina Zakaria, Nasrul Hamidin, Mohd Azlan Bin Mohd Ishak


In view of increasing demand, mushroom cultivators in tropical and subtropical region are facing more challenges and difficulties to grow mushrooms due to inconsistent environmental conditions. So, this study investigated mushroom cultivation in controlled indoor environment and compared the result with outdoor cultivation. For this, the indoor humidity and temperature were controlled by humidifier and ventilation during cultivation of Pleurotus pulmonarius.  Four roof ventilations were installed on top roof to bring out the air from inside to outside and four small side ventilations were installed on side wall along with black filter to bring the air from outside to inside. A single unit of humidifier was applied along with two roof ventilations and two side ventilations to optimize the humidifying duration for 80-90% humidity. In this process 15 min humidifying duration was optimized to increase the humidity from 80% to 90% by a single humidifier. Then the four units of humidifier were applied for 15 min by one combined application and five individual applications to optimize the configuration to ensure the 80-90% humidity in the whole cultivation room with tolerable temperature. Finally, the optimized configuration was found as application of 15 mins humidifying treatment and followed by 15 mins interval period for each humidifier and applied for the indoor cultivation method. On the other hand, the outdoor cultivation was conducted to compare the findings of indoor cultivation. During cultivation 28.60±1.02 ˚C temperature and 87.96±2.26% humidity were recorded in optimized condition whereas 32.1±3.73 ˚C temperature and 61.87±15.9% humidity were recorded in outdoor cultivation. The highest above 80% outstanding moisture containing fruitbodies was found in indoor optimized cultivation. The total 261.8 kg mushroom was harvested from the indoor optimized cultivation System which was 140.3 kg more than outdoor cultivation. About 109.1% mean bio-efficiency of yield was achieved in optimized cultivation when only 50.5% was found in outdoor cultivation. This method of humidifying optimization and configuration procedure may ensure the continuous mushroom production throughout the years in tropical and subtropical regions. 

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