The relative immobility of fertilizer and native copper in an organic soil under field conditions |
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Authors: | S. P. Mathur M. P. Lévesque J. G. Desjardins |
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Affiliation: | 1. Soil Chemistry and Biology Section, C.B.R.I., Canada 2. Research Branch, Agriculture Canada, Land Resource Research Institute, KIA 0C6, Ottawa, Ontario, Canada
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Abstract: | Twelve profiles were obtained from a 2 ha field, 6 from where Cu had been applied for 15 yr and 6 from areas not fertilized with Cu. The 30 to 50 cm layers in the profiles in both areas contained similar amounts of Cu indicating a lack of vertical migration of the fertilizer metal under field conditions. A buried layer of humified material was found mostly between 50 and 60 cm depth. Of the mineral elements which enriched this layer during degradation and humification, perhaps a few thousand years ago, Cu, Pb and Mn were apparently retained more than Ca, Fe, Ni, Al, Mg, Zn and K. |
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