Physical Stimulations of Electrical Shock and High Light Intensity on the Growth Performance and Yield of Grey Oyster Mushroom (Pleurotus sajor-caju)
Physical Stimulations of Electrical Shock and High Light Intensity on the Growth Performance and Yield of Grey Oyster Mushroom (Pleurotus sajor-caju)
Roshita Ibrahim1*, Anis Nursyazwani Aminuddin1 and Mohd Nizam Lani2
ABSTRACT
High demand, low-cost production, and vigorous mycelium growth of grey oyster mushroom (Pleurotus sajor-caju) make it popular among small farmers to commercially cultivate it in Malaysia. This study explored the impact of different physical stimulations on the growth and yield of grey oyster mushrooms. The treatments included individual applications of electrical shock (12V; 13A) and high light intensity (1500 Lux) which were studied previously, as well as combined treatments of electrical shock with high light intensity (ES-HLI) and alternating treatments of these two stimuli (alternate ES-HLI). All the physically stimulated mushroom bags took a shorter spawning period (25-30 days) compared to the control (37 days). Electrical shock and combined ES-HLI treated bags had a faster mycelium growth rate of around 0.94 - 0.96 cm/day whereas control treatment had only 0.62 cm/day. The duration for the first mushroom harvesting was led by treatment of combined ES-HLI with 30.4 days. Electrical shock has also resulted in the highest yield and percentage biological efficiency of 378.5 g and 75.7% respectively. The average pileus diameter in control was only 6.16 cm, however, high light intensity treatment produced a larger size of mushroom with an average pileus diameter of 10.09 cm and had the lightest colour compared to other treatments. In conclusion, the application of electrical shock stimulation emerged as the most effective treatment among the various physical stimulants investigated in this study, attributed to its shorter spawning time and the highest yield of mushrooms produced.
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August 2024
Vol. 40, Sp. Iss. 1
