Effect of High Moisture Content on Temperature and Microbial Activity of Composting Dairy Cattle Manure

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  • MIYATAKE Fumihito
    The Japanese Society of Agricultural Machinery Collaboration Center for Research and Development of Utsunomiya University Present address: National Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization
  • IWABUCHI Kazunori
    The Japanese Society of Agricultural Machinery Faculty of Agriculture, Utsunomiya University
  • ABE Yoshiyuki
    The Japanese Society of Agricultural Machinery Present address: National Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization
  • HONDA Yoshifumi
    The Japanese Society of Agricultural Machinery Present address: National Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization

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Other Title
  • 高い材料水分が堆肥温度および微生物活性に及ぼす影響
  • タカイ ザイリョウ スイブン ガ タイヒ オンド オヨビ ビセイブツ カッセイ ニ オヨボス エイキョウ

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Abstract

The effect of high moisture content on the composting reactions of dairy cattle manure was investigated to determine the upper limit of moisture content that can promote composting reactions. The results of the study showed that both mesophilic and thermophilic microorganisms were active over a broad range of moisture content (37 to 74%) during the early stage of composting. Even at a moisture level greater than 76%, compost temperature increased to more than 50°C. The specific growth rate of microorganisms was high at a moisture content greater than 80%, suggesting the possibility of high moisture composting without using a bulking agent.

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