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Soil solution chemistry in the rhizosphere of roots of sessile oak (Quercus petraea) as influenced by lime

Titelangaben

Bakker, Mark R. ; Dieffenbach, Antje ; Ranger, Jacques:
Soil solution chemistry in the rhizosphere of roots of sessile oak (Quercus petraea) as influenced by lime.
In: Plant and Soil. Bd. 209 (1999) Heft 2 . - S. 209-216.
ISSN 1573-5036

Abstract

This study describes the soil chemistry in the rhizosphere of fine roots of sessile oak (Quercus petraea) (M.) Liebl.) grown in rhizotrons. A control was compared with soils treated with an equivalent CaCO3 of 1.4 t ha-1 CaO. Solution samples were extracted from the B-horizon using micro suction cups with a suction of ~40 kPa. Two series of experiments were carried out: one irrigated with rain water (age of seedling 2 to 4 months) and one irrigated with demineralized water (age of seedling 1.5 to 2 months). Half of the sampling points were chosen close to the roots and half in the bulk soil. In both experiments there was generally no rhizosphere gradient after liming. In contrast, in the control, depletion in the rhizosphere occured for most of the ions studied (Mg, Ca, Al, K, NO3-, NH4+, Cl-) in the demineralized water experiment, but this was different when rainwater was used. The latter effect is probably due to the higher solution concentrations in the rainwater experiment but could also be a result of root damage due to low Ca/Al ratios in the rizosphere solution. It was concluded, that liming improved the chemical composition in the rhizosphere soil solution by increasing overall solute concentration to levels enabling sufficient and easier nutrient uptake by roots.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Zusätzliche Informationen: BAYCEER7332
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Lehrstuhl Bodenökologie
Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik
Eingestellt am: 09 Okt 2015 05:56
Letzte Änderung: 09 Okt 2015 05:56
URI: https://eref.uni-bayreuth.de/id/eprint/20293