Abstract
To find out the best substrate for growing fruit-bodies of Hatakeshimeji mushroom, Lyophyllum decastes, the formulation of ingredients was investigatied using sawdust from Sugi, Cryptpmeria japonica, piled outdoor with occasional watering, Kanumatsuchi for gardening soil, corncob meal, malt feed and wheat-bran. 1. As additional quantity of Kanumatuchi increased, pH of the substrate rose up and the period for mycerlial colonization shortened and the yield of nomal-shaped fruitbodies increased. 2. As additional quantity of wheat-bran increased, the period for mycelial colonization was lengthened and the yield of normal-shaped fruit-bodies deceased. 3. The mixture of 5L of Sugi saw-dust, 1L of wheat-bran, 2L of Kanumatsuti, 1.5L of malt feed and 2L of corncob meal was the best formula as substrate for growing fruit-bodies in this study. 4. Sugi saw-dust piled outdoor for three months retarded mycelial run because of inhibitors remained in the saw-dust and caused growing of abnormal fruit-bodies.
