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Trace elements extractable by 2-ketogluconic acid from soils and their relationship to plant contents

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Trace element levels extractable by 2-ketogluconic acid (2-KG), ammonium acetate, acetic acid, EDTA, and DTPA were determined in three different soils of the Tarves association. The 2-ketogluconic acid was derived from 2-litre batch cultures of a soil bacterium,Erwinia sp. Pasture grasses and clovers growing on these soils were also analysed. At the same pH, 2-KG extracted more Co, Ni and Zn and considerably more Fe, Ti and V than ammonium acetate. The quantities of Cu, Mn, Mo, Ni and Zn extracted by 2-KG from the three soils generally reflected, in a similar way to the other extractants, the contents of these elements in grasses and clovers growing on the soils.

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Berrow, M.L., Davidson, M.S. & Burridge, J.C. Trace elements extractable by 2-ketogluconic acid from soils and their relationship to plant contents. Plant Soil 66, 161–171 (1982). https://doi.org/10.1007/BF02183975

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Key words

  • Chelation
  • Erwinia-produced 2-ketogluconic acid
  • Pasture species contents
  • Soil extractions
  • Trace elements