Abstract
: The effect of crude oil on polluted sawdust on the growth of Pleurotus ostreatus was evaluated. The experiment was laid in a completely randomized design (CRD) with five replicates. Data collected were subjected to analysis of variance (ANVOA) and the mean separation was done using Duncan Multiple Range test (DMRT) at the probability of 5%. Result showed that micro-morphological characteristics of P. ostreatus grown on sawdust polluted with crude oil at varying concentrations of 50 ml, 100ml and 150ml and allowed to be contaminated for 8, 10 and 12 day respectively before sowing the mycelia in the polluted sawdust. Marco-Morphological at 10ml level of crude oil polluted sawdust significantly reduced the marco-morphological features of the P. ostreatus mushroom harvest at different days compared to 50ml crude oil polluted sawdust, in 8 days, the cap length measurement are (4.43cm±1.10 – 6.55cm±1.10), for stipe length (3.31cm ± 0.01 - 7.41cm ± 0.02) while the fresh fruit body weight (115.2g ± 2.01 - 175.3g ± 2.01). It is observed that the growing of P. ostreatus using wastes will help to reduce the huge agricultural wastes within our environment that sometimes when not properly managed caused serious environmental pollution. The research therefore recommended for the use of sawdust in the growing of Pleurotus ostreatus mushroom species, since sawdust and mushroom are good remediators of crude oil pollution. The summary of the result indicated that increase in crude oil pollution significantly (P≤0.5) affected the macro morphological features of the oyster mushroom production.Keywords: Oyster mushroom, Pleurotus ostreatus, morphological parameters and crude oil.
Highlights
The ability of mushrooms to utilize various lignocellulosic substrates
P. tuber-regium was able to the contaminated crude oil thereby reducing the amount of the hydrocarbon and other polycyclic aromatic hydrocarbon (PAH)
The aim of this research are to determine the macro-morphological characteristics of Pleurotus ostreatus grown on sawdust polluted with different levels of crude oil and to evaluate the yield of Pleurotus ostreatus grown on different levels of crude oil polluted sawdust
Summary
The ability of mushrooms to utilize various lignocellulosic substrates. Substrate type is one of the major factors that affects the yield and quality of oyster mushroom (Chitamba et al, 2012). The food and agricultural organization, mushrooms as food contributing to the protein nutrition of the countries which depend largely on cereals because of their high protein quality (Kuforiji and Fasidi, 2009). Mushrooms have been a source of food for man and other animals, and have played an important role in the cycling of carbon and other elements through the breakdown of lignocellulosic plant residues and animal dung, which serve as the substrates for these saprophytic fungi (Chang, 1996). Mushrooms often refer to fruiting body of the gill fungi They do not contain chlorophyll like green plants and as a result cannot manufacture their own food. The aim of this research are to determine the macro-morphological characteristics of Pleurotus ostreatus grown on sawdust polluted with different levels of crude oil and to evaluate the yield of Pleurotus ostreatus grown on different levels of crude oil polluted sawdust
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