Influence of Spawn Density, Number of Holes on the Polybags and Epidemiological Factors on Sporophore Production of Hypsizygus Ulmarius

Studies were conducted to assess the effect of spawn density, no of holes on the polybags and the epidemiological factors on the production of Hypsizygus ulmarius. Among the different spawn densities viz., 5,10,15,20,25 & 30 %. spawn density at 20 per cent level completely colonized the beds within 17.6 days and the same treatment recorded comparatively lesser number of days for pin head formation (3.6 days). The polybag beds provided with ten holes at random recorded minimum spawn run (17.2) days, minimum days for pin head formation (4.2), maximum sporophore yield (491 g/bed) and biological efficiency (98.2%). A temp. level of 28C and a RH of 80 per cent was found to be conducive for the growth and sporophore yield of H. ulmarius.