Effects of electrical shock treatment and exposure to blue color LED on the growth, yield and quality of Grey Oyster Mushrooms (Pleurotus sajor-caju)

Abstract

Grey oyster mushrooms (Pleurotus sajor-caju) is an edible mushroom cultivated in Malaysia due to its high nutritional and medicinal value and the demand on Pleurotus sajor-caju in local and foreign market rises continuously. In this research, the effect of electrical shock treatment and exposure to blue color LED on the growth, yield and quality of Pleurotus sajor-caju was investigated. There were 6 sets of electrical and blue LED treatment on the spawning and production phase in Pleurotus sajor-caju including control which did not receive any treatment involved in this research. The effect of electrical and blue LED treated mushroom bags were significantly observed in the aspects of mycelium growth rate, number of days taken for pinhead emergence and fruiting body formation. There were significance enhancement of yield for grey oyster mushroom for the bags treated with Electric and Blue LED, Electric Electric, Electric (Electric+LED) and No Electric LED in the aspects of total fresh weight of fruiting bodies, number of fruiting bodies, percentages of biological efficiency and substrate utilized for every 100 g mushrooms produced. Therefore, the mushroom bags which treated with electrical shock treatment and blue LED is the best compared to other treatments because it showed significantly the highest rate of mycelium growth, higher yield and good quality of mushroom.