Paper Title
Effects Of Natural Environment And Increased Ranges Of Humidity For Indoor Cultivation Of Grey Oyster (Pleurotus Pulmonarius) Mushroom In Malaysia

Abstract
Pleurotuspulmonarius is one of the most famous mushrooms as a good source of protein, vitamins and medicinal properties. In view of the growing importance of mushroom in Malaysia, this study has been initiated with the objective to examine the suitability of Pleurotuspulmonarius cultivation and to compare the morphology, quality and yield with natural indoor environment and indoor environment with high range of humidity. The mushroom (Pleurotuspulmonarius) was cultivated in three different environmental conditions including natural indoor environment (NIE), humidifying 75-90% till primordial initiation (HTPI) environmental condition and finally in continuous 75-90% humidity (CH), shown to have different morphology of fruitbodies and yield percentages of mushrooms. The highest individual weight, numbers of fruitbodies, cap diameter, stalk height, percentage of primordial initiation, mature fruitbody formation and the lowest dead primordial were found in continuous 75-90% indoor humidity condition. The lowest morphology and yield percentages were found in natural indoor environment and humidifying 75-90% till primordial initiation condition. In CH condition the numbers of fruitbody was higher than another two conditions but not significantly. In HTPI condition, the lowest morphology and yield were recorded although the primordial initiation was higher than NIE. This study provides evidence on adaptability and sustainability of Pleurotuspulmonarius in indoor environment and found the significant differences between indoor natural environment and increased range of humidity where the morphology and yield percentages are increased with the increased range of indoor humidity. Keywordsó Environment, Temperature, Humidity, Mushroom, Morphology, Yield percentage.