J.of Soc of Agri Struc, Japan.
Vol.37,No.3 December 2006, 145-152
Original:
Language: Japanese

    The purpose of this study is to reveal the effective distance of manure utilization from the energetic point of view. And it was calculated that the comparing consumptions of fossil energy for manure utilization (composting, transportation and spreading) and chemical fertilizer utilization (production, transportation and spreading) at the case of supplying N, P₂O₅ and K₂O for the land equally.
    And the evaluated manure utilization system was compost depot at the about 100 head dairy farm for case study.
    The fossil energy consumption was 159GJ at the manure treatment without transportation. The energetic value of chemical fertilizer (N, P₂O₅ and K₂O) at the composted manure was 475GJ. The effective distance for manure utilization was calculated about 20km. It was indicated the manure utilization was environmental friendly from the energetic point at the transport distance less than 20km.
    Therefore, this study indicated the limitation of the transport distance of the compost utilization. And it revealed the availability of effective distance for evaluation of compost utilization from the energetic point.

Keywords: livestock manure, manure utilization, transportation, fossil energy consumption

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