Freshly milled sawdust of Triplochiton scleroxylon, moisture
content 30% (w/w) (88 parts), was thoroughly mixed with 11.5
parts rice bran and 0.5 part of calcium oxide. Water was sprinkled
on the mixture until its moisture content was about 70%
(w/w). The mixture was piled up into a pyramidal heap and
allowed to ferment for 28 days. It was turned every fourth day to
ensure proper aeration. Aliquots of composted sawdust (1 kg)
were put into 33·18 cm heat-resistant, 0.1 lm polypropylene
bags [2]. Corn husk, banana leaves, elephant grass, rice straw and
maize stover were chopped into 4 cm lengths and soaked in water
overnight in basins. Excess water was drained and the substrates
dried in the sun for 2 h. Fresh uncomposted sawdust and the
substrates were also bagged in heat-resistant polypropylene bags.
Each bag was closed with a plastic neck, steam-sterilised for 2.5 hand inoculated with 5 g sorghum spawn (the substrates were
subjected to these different treatments to ensure maximum
yields). The bags were then incubated at 26–28C and 60–65%
RH for 20–34 days in a well-ventilated, semi-dark room. The
mean radial growth per week and the spawn run period to total
colonisation (i.e. the number of days from inoculation to complete
colonisation of the compost bag by the mycelium) were
recorded.
Freshly milled sawdust of Triplochiton scleroxylon, moisturecontent 30% (w/w) (88 parts), was thoroughly mixed with 11.5parts rice bran and 0.5 part of calcium oxide. Water was sprinkledon the mixture until its moisture content was about 70%(w/w). The mixture was piled up into a pyramidal heap andallowed to ferment for 28 days. It was turned every fourth day toensure proper aeration. Aliquots of composted sawdust (1 kg)were put into 33·18 cm heat-resistant, 0.1 lm polypropylenebags [2]. Corn husk, banana leaves, elephant grass, rice straw andmaize stover were chopped into 4 cm lengths and soaked in waterovernight in basins. Excess water was drained and the substratesdried in the sun for 2 h. Fresh uncomposted sawdust and thesubstrates were also bagged in heat-resistant polypropylene bags.Each bag was closed with a plastic neck, steam-sterilised for 2.5 hand inoculated with 5 g sorghum spawn (the substrates weresubjected to these different treatments to ensure maximumyields). The bags were then incubated at 26–28C and 60–65%RH for 20–34 days in a well-ventilated, semi-dark room. Themean radial growth per week and the spawn run period to totalcolonisation (i.e. the number of days from inoculation to completecolonisation of the compost bag by the mycelium) wererecorded.
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