Properties of Fruit Bodies of Oyster Mushroom (Pleurotus Ostreatus) Cultivated on Some Local Cellulosic Residues in Iraq

Abstract

In this work, some available local cellulosic substrates namely; S1 (wheat straw) as a control, S2 (70% wheat straw, 20% sawdust and 10% date palm fiber), S3 (50% wheat straw, 30% sawdust and 20% date palm fiber), S4 (sawdust) and S5 (date palm fiber), were used for cultivation white oyster mushroom Pleurotus ostreatus. The shorter period for completion of mycelial growth in bags was 12 days on S2 and S3 media, significantly (P <0.05), whereas, the longer time was 15 days on S4 and S5 media compared with the control (S1) at average 13 days. Biological efficiency percent was 26.1% on S2 medium as a higher percent compared with 23.8% on control medium, while S4 medium was unsuitable for cultivation this strain. In significant (P <0.05), S5 medium showed higher diameter of cap (67 mm) compared with the control medium (S1) at value approx. 60 mm.

Recycling of Date-Palm Fiber to Produce Pleurotus Cornucopiae Var. Citrinopileatus Mushroom

“…Clusters' number reached to 9 clusters on S3 substrate compared with 8 ones on the control, whereas S4 had only one cluster. That agrees with some studies which referred to that hardwood sawdust is unsuitable for cultivating Pleurotus ostreatus (Owaid et al, 2016b), they demonstrated that the sawdust extract exhibits poor mycelial growth of oyster mushroom. Furthermore, Onuoha (2007) mentioned that the sawdust may be reduced production of oyster mushroom relatively.…”

“…2), compared with control (102 g/bag). Using these cellulosic materials affected on composition of mixture substrates; in another mean, datepalm fiber has a positive correlation with yield while sawdust has a negative correlation (Owaid et al, 2016b). (Delmas and Mamoun, 1982), also, compatible with results of the biological efficiency of P. ostreatus (20%-30%) on date-palm residues composed from its fibers (Al-Qarawi et al, 2013).…”

“…Thus, the sawdust must be not used alone but mixed with other agro-substrates (Davis and Aegerter, 2000). Generally, oyster mushroom species are able to cleavage of cellulosic matters of date palm fibers (Owaid et al, 2016b). The mixture substrate S3, which contains around 20% of datepalm fibers, is a best substrate recorded best results in most of the parameters measured compared with the substrate S2 (10% date-palm fibers) and other substrates which composed from one type.…”

“…The size of fruiting bodies is useful to determine the morphology of yellow oyster mushroom P. cornucopiae var. citrinopileatus ( Owaid et al (2016b), while sawdust substrate showed very poor morphology properties of this mushroom when was used alone. That is agrees with the result of Davis and Aegerter (2000), they referred to must be use the sawdust with other agro-substrates.…”

“…Morphological properties of oyster mushroom had been related with the fruiting bodies size such as diameter and thickness of pileus and stipe (Owaid et al, 2016b). The size of fruiting bodies is useful to determine the morphology of yellow oyster mushroom P. cornucopiae var.…”