The mycelial growth on substrate W80+WB20 and
R80 +WB20 gave significantly faster mycelial growth rate
than that on substrate C80+ WB20 for both sterilized and
non-sterilized substrate. For both sterilized and non-sterilized
substrates, the mycelial growth on substrates C45 +R45
+ WB10 was significantly slower than that on substrate
R80 +WB20, and that on the substrates C40+ WS40+
WB20, C30 +WS50 +WB20 were significantly slower than
that on substrate WS80+ WB20. The results indicated that
addition of cotton seed hull decreased mycelial growth compared
to sole rice straw or wheat straw substrate. Compared
to the sterilized substrate, the non-sterilized substrate exhibited
significantly higher mycelial growth rate.