Estimation of Cadmium Load on Japanese Farmland Associated with the Application of Chemical Fertilizers and Livestock Excreta

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In the present study, we estimated the cadmium (Cd) load on Japanese farmland originating from chemical fertilizers and livestock excreta. Phosphate and compound fertilizers, except for fused phosphate, contained higher concentration of Cd than the other fertilizers. Cadmium concentrations in phosphate fertilizers, cattle excreta, pig excreta, and chicken excreta were 0.04 to 5.30, 0.38, 0.50, and 0.57 mg Cd kg^<-1>, respectively. Cadmium load associated with the application of chemical fertilizers and livestock excreta amounted to 7.034 and 2.161 Mg Cd year^<-1> in 1997, respectively, indicating that chemical fertilizers were the main source of Cd load on Japanese farmland. Cadmium in non-utilized livestock excreta amounted to 1.408 Mg Cd year^<-1> in 1997. Phosphate application derived from non-utilized livestock excreta instead of chemical fertilizers increased the Cd load level <1%. Cadmium load associated with the application of chemical fertilizers and livestock excreta accounted for 0.4% of the estimated amount of total Cd in farmland soil (2,216 Mg Cd). It was considered that the risk of an increase in the Cd concentration would be high in farmland with multiple cropping, especially in the case of vegetable and industrial crop cultivation.

収録刊行物

  • Soil science and plant nutrition

    Soil science and plant nutrition 50(2), 263-267, 2004-04-01

    一般社団法人日本土壌肥料学会

参考文献:  19件中 1-19件 を表示

被引用文献:  11件中 1-11件 を表示

各種コード

  • NII論文ID(NAID)
    110001720287
  • 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
    6905521
  • 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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