Fogponics is a controlled-environment cultivation technique that uses fine mist to maintain moisture conditions within the growing environment. This study investigated the effect of fan speed on the production performance of oyster mushrooms (Pleurotus ostreatus) cultivated using an automated fogponics system. Two fan-speed conditions, 1,500 rpm and 3,000 rpm, were evaluated using 120 fruiting bags distributed equally between the treatments over a 60-day cultivation period. Harvest weight, fruiting-body count, and biological efficiency were measured. The 3,000-rpm treatment produced a cumulative harvest weight of 11,303 g, 2,236 fruiting bodies, and a mean biological efficiency of 59.80 ± 12.27%, compared with 9,461 g, 1,891 fruiting bodies, and 50.06 ± 14.07% under the 1,500-rpm treatment. Significant differences were observed in harvest weight (p < .001), fruiting-body count (p = .003), and biological efficiency (p < .001). The results demonstrate that the 3,000-rpm condition provided better production performance than the 1,500-rpm condition under the experimental configuration evaluated. These findings provide empirical evidence that controlled airflow is an important operational consideration in fogponic oyster mushroom cultivation. Further studies incorporating multiple airflow levels, direct airflow and energy measurements, and larger-scale cultivation systems are recommended to determine optimal and commercially applicable operating conditions.

Keywords: fogponics, oyster mushroom, airflow regulation, biological efficiency, controlled environment agriculture