By a News Reporter-Staff News Editor at Biotech Business Week -- Investigators discuss new findings in Integrative Agriculture. According to news reporting from Yichang, People's Republic of China, by NewsRx journalists, research stated, "This study evaluated the microbial community dynamics and maturation time of two compost systems: biogas slurry compost and cow manure compost, with the aim of evaluating the potential utility of a biogas slurry compost system. Denaturing gradient gel electrophoresis (DGGE), gene clone library, temperature, C/N ratio, and the germination index were employed for the investigation, cow manure compost was used as the control."
The news correspondents obtained a quote from the research from China Three Gorges University, "Results showed that the basic strip and dominant strips of the DGGE bands for biogas slurry compost were similar to those of cow manure compost, but the brightness of the respective strips for each system were different. Shannon-Weaver indices of the two compost systems differed, possessing only 22% similarity in the primary and maturity stages of the compost process. Using bacterial 16S rRNA gene clone library analysis, 88 bacterial clones were detected. Further, 18 and 13 operational taxonomic units (OTUs) were present in biogas slurry and cow manure compost, respectively. The 18 OTUs of the biogas slurry compost belonged to nine bacterial genera, of which the dominant strains were Bacillus sp. and Carnobacterium sp.; the 13 OTUs of the cow manure compost belonged to eight bacterial genera, of which the dominant strains were Psychrobacter sp., Pseudomonas sp., and Clostridium sp. Results demonstrated that the duration of the thermophilic phase (more than 50 C) for biogas slurry compost was 8 d less than the according duration for cow manure compost, and the maturation times for biogas slurry and cow manure compost were 45 and 60 d, respectively."
According to the news reporters, the research concluded: "It is an effective biogas slurry assimilate technology by application of biogas slurry as nitrogen additives in the manufacture of organic fertilizer."
For more information on this research see: Microbial Community Dynamics During Biogas Slurry and Cow Manure Compost. Journal of Integrative Agriculture, 2013;12(6):1087-1097. Journal of Integrative Agriculture can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier - www.elsevier.com; Journal of Integrative Agriculture - www.elsevier.com/wps/product/cws_home/727934)
Our news journalists report that additional information may be obtained by contacting H.Y. Zhao, China Three Gorges Univ, Alan G MacDiarmid Res Inst Renewable Energy, Yichang 443002, People's Republic of China. Additional authors for this research include J. Li, J.J. Liu, Y.C. Lu, X.F. Wang and Z.J. Cui (see also Integrative Agriculture).
Keywords for this news article include: Asia, Biotechnology, Biogas, Energy, Yichang, Oil and Gas, Bioengineering, Integrative Agriculture, People's Republic of China
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