Release of nonexchangeable potassium from different size fractions of two highly K-fertilized soils in the rhizosphere of rape (Brassica napus cv Drakkar)
JF Niebes, JE Dufey, B Jaillard, P Hinsinger - Plant and Soil, 1993 - Springer
JF Niebes, JE Dufey, B Jaillard, P Hinsinger
Plant and Soil, 1993•SpringerThe 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.
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.
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.
Springer
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