Utilization of Agricultural and Forestry by-Products in Ganoderma lucidum (Curt.: Fr.) P. Karst. Production

Abstract

The aim of the study was to evaluate the use of some local agricultural and forestry by-products as Ganoderma lucidum growing subsrate. In the study, 8 different growing media prepared by mixing agricultural and forestry wastes such as oak sawdust (OS), poplar sawdust (PS), wheat straw (WS), wood chips (WCH), green almond hulls (AH) and green walnut hulls (GWH) alone or in different proportions, were used for G. lucidum cultivation and the effects of these substrates on spawn run time (SRT), days to pinhead initiation (DPI), days to the first harvest (DFH), yield (g/kg) and biological efficiency (BE%) were investigated. The results demonstrated that spawn run time (SRT) of G. lucidum was shorter in PS and WS:GWH12.5 (19.7 days and 20.8 days) as compared to other substrates and mixtures (22.2-28.5 days). The pinheads emerged in substrates between 43th- 49th days and the fruiting bodies were collected between 80.3 -93.5 days after the spawning. Total fresh mushroom yield and BE(%) varied from 71.39 to 110.10 g/kg of substrate and from 21.0% to 31.46, respectively. Moreover, PS substrate produced fruitbody also earlier compared with the other investigated substrates. The study revealed that although higher total yields were obtained by sawdust substrates, considering the difficulty of finding sawdust in some areas, WS and the mixture of WS and GHW (87.5:12.5%) could be also successfully used inof G. lucidum production.