Estimation of cadmium load on Japanese farmland associated with the application of chemical fertilizers and livestock excreta

Autor:	Shin-ichiro Mishima, Tsunehisa Inoue, Ryosuke Kimura
Rok vydání:	2004
Předmět:	Cadmium business.industry digestive oral and skin physiology Soil Science chemistry.chemical_element Plant Science Human decontamination Phosphate Phosphate fertilizer chemistry.chemical_compound Agronomy chemistry Livestock business
Zdroj:	Soil Science and Plant Nutrition. 50:263-267
ISSN:	1747-0765 0038-0768
DOI:	10.1080/00380768.2004.10408476
Popis:	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
Databáze:	OpenAIRE
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