Estimation of Zinc and Copper Balance in Japanese Farmland Soil Associated with the Application of Chemical Fertilizers and Livestock Excreta

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著者

    • KOMADA Michio
    • Water Quality and Solute Dynamics Group, Department of Environmental Chemistry, National Institute for Agro-Environmental Sciences

抄録

We estimated the zinc (Zn) and copper (Cu) balance in Japanese farmland soil in 1997. Zinc and Cu uptake by crops amounted to 563 Mg and 108 Mg, respectively, while Zn and Cu doses from chemical fertilizer were 297 Mg and 63 Mg, respectively. Zinc and Cu contents of livestock excreta were estimated to be 2,863 Mg and 713 Mg, and 1,551 Mg and 337 Mg of this was applied to farmland soil. As a result, there was an excess of 1,285 Mg of Zn and 292 Mg of Cu in farmland soil. This excess corresponded to 0.379% of the amount of total Zn and 0.270% of the amount of total Cu in farmland soil. Even if all excess Zn and Cu was accumulated in farmland soil, it would take more than 190 years to reach the permissible upper level of Zn, based on the average Zn concentration in non-polluted farmland soil. However, the promotion of the use of livestock excreta, especially pig excreta that contain high levels of Zn and Cu, may shorten the time required to reach the level. Although there are some guidelines, the recommended dose level has not clearly determined. Conventional dose of Zn applied through chemical fertilizer and manure is lower than the recommended Zn application level. Doses may depend on plant diagnosis and we should monitor the contamination of soils and crops with Zn and Cu, or the application might depend on other indicators like the Zn/cadmium ratio.

収録刊行物

  • Soil science and plant nutrition

    Soil science and plant nutrition 51(3), 437-442, 2005-06-01

    一般社団法人日本土壌肥料学会

参考文献:  33件中 1-33件 を表示

被引用文献:  9件中 1-9件 を表示

各種コード

  • NII論文ID(NAID)
    110004704761
  • NII書誌ID(NCID)
    AA00844314
  • 本文言語コード
    ENG
  • 資料種別
    SHO
  • ISSN
    00380768
  • NDL 記事登録ID
    7690044
  • NDL 雑誌分類
    ZR7(科学技術--農林水産--農産)
  • NDL 請求記号
    Z53-G349
  • データ提供元
    CJP書誌  CJP引用  NDL  NII-ELS 
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