Academic journal article Iranian Journal of Public Health

Enriching Vermicompost by Nitrogen Fixing Bacteria Isolated from Vermicompost

Academic journal article Iranian Journal of Public Health

Enriching Vermicompost by Nitrogen Fixing Bacteria Isolated from Vermicompost

Article excerpt

Background: Addition of nitrogen fixing bacteria improves the quality of vermicompost,nitrogen is one of the major nutrients essential for all living beings,also any change in population of microorganisms in vermicompost has a signifi- cant influence on its quality. Present study was performed with aimed to possibility of changing in the content of nitro- gen in the vermicompost.

Methods: In this research vermicompost was inoculated by 10 strains free-living nitrogen-fixing bacteria of the genus Pseudomonas,which were previously isolated and identified from vermicompost. This research was conducted to increase the nitrogen content in vermicompost. In order to accom- plish this goal, inoculums from nitrogen fixing bacteria gene- ra were prepared,then bacteria inoculated to vermicompost beds, for 60 days at a temperature of 28°C storage, and bio- logical and chemical factors were measured on days 0, 20, 40 and 60 in vermicompost. …

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