Soil microbial biomass and microbial respiratory activity in a field with or without film mulch where composted livestock manure or chemical fertilizer was continuously applied

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  • Hori Kaneaki
    Division of Sustainable Vegetable Production, National Agricultural Research Center for Western Region
  • Urashima Yasufumi
    Division of Sustainable Vegetable Production, National Agricultural Research Center for Western Region:(Present office)Division of Soils and Fertilizers, National Agricultural Research Center
  • Shiomi Fumitake
    Division of Sustainable Vegetable Production, National Agricultural Research Center for Western Region

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Other Title
  • 牛ふん堆肥,豚ふん堆肥または化成肥料の連用とフィルムマルチの有無が土壌微生物バイオマスとバイオマス当たりの呼吸活性に及ぼす影響
  • ギュウフン タイヒ,ブタフンタイヒ マタハ カセイ ヒリョウ ノ レンヨウ ト フィルムマルチ ノ ウム ガ ドジョウ ビセイブツ バイオマス ト バイオマス アタリ ノ コキュウ カッセイ ニ オヨボス エイキョウ

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Description

The amounts of soil respiration, soil microbial biomass, and microbial respiratory activity in experimental fields continuously applied with cattle or swine manure compost or with chemical fertilizer were investigated. The amounts of soil microbial biomass in the plots with cattle or swine manure compost were higher than those in the plot with chemical fertilizer. Microbial biomass increased with an increase in the quantity of compost applied. However, microbial respiratory activity in the plots with cattle or swine manure compost was lower than that in the plot with chemical fertilizer. Because soil moisture in the plots with mulch was lower than that in the plots without mulch, biomass was smaller in the plots with mulch than in those without mulch. The lower the soil moisture level, the lower the soil respiratory activity in the range of soil moisture level between 160 and 230 g kg^<-1>. The amounts of microbial biomass increased correspondingly with the amount of water-soluble organic carbon. Soil respiratory activity might decrease with a rise of EC and pH or a decrease in soil moisture. The lowering of the respiratory activity with the rise of EC was recognized despite the fact that EC was within the range of the soil dignosis standard. Based on these facts, the growth conditions of the radish being cultivated, and the soil physicochemical properties, we here propose soil diagnosis standards of microbial biomass and respiratory activity and soil physicochemical conditions necessary for satisfying the soil microbial standards.

Journal

  • Soil Microorganisms

    Soil Microorganisms 66 (1), 3-11, 2012

    Japanese Society of Soil Microbiology

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