Isolating and screening cellulolytic microorganisms to produce organic biofertilizer
Keywords:
Microbes decompose celulose,, microbes decompose celluloseAbstract
Estimatedly, in Vietnam, there are at least 10% of scrap wood can be
collected and reused. However, just a small amount was reused for different
purposes and the rest was discarded or burned, which not only caused
serious financial and enviromental damage but also affected forest
protection. Composting forestry scrap with mircobiological technique has
shown various environmental and economic advantages. Moreover, the
process also produced organic biofertilizer which can apply to agricutural
and forestry soil. In this study, 24 cellulose degrading strains were isolated,
in which microbial strain X1 and X2 had the highest activity and were
applied to produce organic bioferilizer. Strain X1 showed the greatest
development and cellulose degration in PD 1% CMC medium at 30 - 35oC
and pH level 5.5. Strain X10 showed the greatest development and cellulose
degration in PD 1% CMC medium at 35oC and pH level 6 - 6.5. In
composting process, to yield the highest NPK content and organic content
of 23%, Acacia bark and leaf materials need to crush into 2 3cm pieces,
maintain the humidity at 50 - 60%, pH = 6 - 7 and composting time last for
90 days.
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