Kultivasi Jamur Tiram Putih (Pleurotus ostreatus) Pada Kayu Berat Dan Kayu Ringan Indonesia

Waste high fells form a log and twig wood type Leucaena (Leucaena leucocephala), rubber (Hevea brasiliensis), randu (Ceiba pentandra), balsa (Ochroma bicolor) can be used as medium cultivation of Oyster Mushrooms (Pleurotus ostreatus) to increase the value added these four types wood. The research aims analyze potential for white on media wood, nutrient content mushrooms, appropriateness business. reserch completely randomized design (CRD) with 9 single factorial treatment logs twigs kindsdifferent wood; baglog from sawdust control. results showed average wet weight fruiting bodies lamtoro (heavy wood) in both , reaching 213 grams is not significantly different control (262 grams) but it larger than other cottonwoods balsa(light which is, only 130 grams. efficiency biological all kinds higher (29.6-36 %) (11-20.5 %). Vegetative phase faster (14 days) different. Generative (reproductive) kapok’s (62 branches (44 longer treatments. White nutritional are quite good worthy consumption. oyster mushroom using fit enough developed. 
 Keywords: heavy light mushroom,