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Abstract: Lignin, pentosan, cellulose, N, C and ash were determined in compost samples taken at filling, spawning and at the end of cropping. Some analyses refer to horse manure compost, the majority to synthetics Waksman's data were largely confirmed. During composting and pasteurization total hgnin remains the same. After spawning hgnin decreases rapidly, pentosan and cellulose decrease rapidly during composting
and pasteurization and, to a lesser extent, during spawn run and cropping.
During
composting soluble N is converted into insoluble N, i.e. built into thermophilic microbes
and the N-rich hgnm-humus complex The mushroom mycelium consumes the
micro-organisms and this complex.
Compost piles were made with various amounts of a fast or a slow acting N source.
The course of the temperature showed that an active microflora is built up as rapidly as
possible to fix the produced NH3 and to escape from poisonous high concentrations of
free NH3.
Obviously at the outset fresh straw cannot furnish enough readily available polysaccharides,
they must be added, e.g. as malt sprouts.
But the effect of the organic N in
these sprouts is only secondary they could be replaced e g by sugar beet pulp, containing,
next to readily available cellwall polysaccharides, only small amounts of organic
N.
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