Influence of substrate formulation on some morphometric characters and biological efficiency of Pleurotus ostreatus EM-1 (Ex. Fr) Kummer grown on rice wastes and “wawa” (Triplochiton scleroxylon) sawdust in Ghana
Date
2022
Journal Title
Journal ISSN
Volume Title
Publisher
Wiley
Abstract
A study was conducted to correlate the stipe length, cap diameter, and growth yield
(fresh weight) of the fruiting body of Pleurotus ostreatus strain EM-1 using different
rice lignocellulosic wastes and “wawa” (Triplochiton scleroxylon) compost: raw una-
mended rice straw; rice straw amended with 1% CaCO3 and 10% CaCO 3; rice straw
amended with 1% CaCO3 and 10% CaCO 3 supplemented with 5, 10, and 15% rice
bran prior to bagging; rice straw and rice husk mixture (1:1 w/w) amended with 1%
CaCO 3 and 10% CaCO 3 supplemented with 5%–15% rice bran prior to bagging; and
wawa sawdust amended with 1% CaCO3 and 10% rice bran. The experiment was laid
out in a completely randomized design in a well-ventilated semi-dark room at 26–
28°C and 60%–65% ERH. The fresh weight, length of the stipe, and cap diameter
increased differentially in each treatment with an increasing period of composting
in the substrates. There was a good coefficient of determination (R2) among stipe
length, cap diameter, and biological efficiency (%). The R2 among stipe length, cap
diameter, and biological efficiency for the different formulated substrates ranged
between R2 = 0.6346–0.9454 and R2 = 0.570–0.9624, respectively. The highest R2
was obtained on raw unamended rice straw substrates (stipe length and cap diameter
were R2 = 0.9454 and R2 = 0.9444, respectively), whereas the lowest correlation co-
efficient among stipe length, cap diameter, and biological efficiency (%) (R2 = 0.6346;
R2 = 0.0570), respectively, was recorded on the rice straw and rice husk mixture sub-
strates. The results show a positive correlation in morphometric growth parameters
studied on the different formulated substrates.
Description
Research Article
Keywords
amended and unamended rice wastes, biological efficiency, cap diameter, correlation, P. ostreatus, stipe length, supplemented substrates