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Changes in functional abilities of the microbial community during composting of manure

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Abstract

The objective of this study was (a) to detect changes of the functional abilities of the microflora during composting of manure as a result of windrow turning frequency and (b) to detect differences between distinct zones within the windrows. Biolog GN microtiter plates containing 95 different carbon sources were inoculated with diluted suspensions of compost material containing 15,000 microorganisms per well (120 μl). We found a dramatic shift in functional microbial community structure during the 8-week composting process. The shift was more rapid when the compost windrows were turned. The substrate use pattern in the outer, well-aerated zone of the unturned windrow was similar to that of the turned windrows. Microbial biomass and respiration decreased more rapidly in the turned than in the unturned windrows, indicating a different pace of compost maturation. The data suggest that the Biolog assay may be a suitable approach to determine compost maturity.

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Authors and Affiliations

  1. Institut für Mikrobiologie, University of Innsbruck, Technikerstr. 25, A-6020, Innsbruck, Austria

    H. Insam, K. Amor & M. Renner

  2. Forschungsinstitut für Alpenländische Land-und Forstwirtschaft, Technikerstr. 13, A-6020, Innsbruck, Austria

    C. Crepaz

Authors
  1. H. Insam
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  2. K. Amor
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  3. M. Renner
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  4. C. Crepaz
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Correspondence to: H. Insam

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Insam, H., Amor, K., Renner, M. et al. Changes in functional abilities of the microbial community during composting of manure. Microb Ecol 31, 77–87 (1996). https://doi.org/10.1007/BF00175077

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  • DOI: https://doi.org/10.1007/BF00175077

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