Release of Nonexchangeable Potassium From Different Size Fractions of 2 Highly K-fertilized Soils in the Rhizosphere of Rape (brassica-napus Cv Drakkar)

Niebes, Jean-François;Dufey, Joseph;Jaillard, Benoit;Hinsinger, Philippe
12th International Plant Nutrition Colloquium — Location: PERTH(Australia) (21.September.1993)

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Authors
  • Niebes, Jean-François
    Author
  • Dufey, JosephUCLouvain
    Author
  • Jaillard, Benoit
    Author
  • Hinsinger, Philippe
    Author
Abstract
The release of nonexchangeable potassium by the different particle size fractions of two soils was studied with a culture device designed to confine soil samples in the rhizosphere of rape (Brassica napus cv Drakkar). After 8 days of cropping, the contribution of nonexchangeable K to K uptake ranged from 50% in the fine clay to 80-100% in the coarser fractions. Due to their high supplying power and their relative abundance, the silt fractions provided a major part of the supply of K by these soils.
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Niebes, J.-F., Dufey, J., Jaillard, B., & Hinsinger, P. (n.d.). Release of Nonexchangeable Potassium From Different Size Fractions of 2 Highly K-fertilized Soils in the Rhizosphere of Rape (brassica-napus Cv Drakkar). 12th International Plant Nutrition Colloquium, PERTH(Australia). https://hdl.handle.net/2078.5/145039