Extractable potassium compounds in the rhizosphere of Norway maple in podzolic soils

Abstract

The concentrations of potassium were measured in 1 М NH₄OAc, 2 M HCl, and hot 10% HCl extracts from samples of the rhizosphere of Norway maple ( Acer platanoides ) and of bulk soil taken in five replicates from the (AO)EL horizon of a podzolic soil. The rhizosphere soil was found to contain reliably more exchangeable potassium due to higher content of OM and more potassium compounds extractable with hot 10% HCl. According to the existing guidelines on growing the leaf-bearing trees the rhizosphere soil and the bulk soil can be referred to highly and moderately provided with available potassium respectively. The higher content of potassium soluble in hot 10% HCl in the rhizosphere soil can be explained by the dissolution of the finest poorly crystallized illite particles. These particles can be accumulated in the rhizosphere soil due to intensification of two processes: illitization and physical disintegration of illite particles enhanced by growing roots.

References

1. April R., Keller D. Mineralogy of the rhizosphere in forest soils of the eastern United States // Biogeochemistry. 1990. Vol. 9.

2. Arocena J.M., Glowa K.R., Massicotte H.B., Lavkulich L. Chemical and mineral composition of ectomycorrhizosphere soils of subalpine fir (Abies lasiocarpa (Hook) Nutt.) in the E horizon of a luvisol // Canad. J. Soil Sci. 1998. Vol. 79.

3. Barre Р., Velde В., Abbadie L. Dynamic role of “illite-like” clay minerals in temperate soils: facts and hypotheses I I Biogeochemistry. 2007. Vol. 82.
   

4. Beckett P.H. T. Studies on soil potassium. II. The immediate Q/I relations of labile potassium in the soil I I J. Soil Sci. 1964. Vol. 15, N 1.

5. Bourbia S.M., Barre P., Kaci M.B.N. et al. Potassium status in bulk and rhizospheric soils of olive groves in North Algeria // Geoderma. 2013. Vol. 197—198.

6. Calvaruso C., Collignon C., Kies A., Turpault M.-P. Seasonal evolution of the rhizosphere effect on major and trace elements in soil solutions of Norway spruce (Picea abies) and Beech (Fagus sylvatica) in an acidic forest soil I I OpenJ. Soil Sci. 2014. Vol. 4.

7. Glowa K.R., Arocena J.M., Massicotte H.B. Properties of soils influenced by ectomycorrhizal fungi in hybrid spruce (Picea glauca x engelmannii (Moench.) Voss.) // Canad. J. Soil Sci. 2004. Vol. 84.

8. Griff its R.P., Baham J.E., Caldwell B.A. Soil solution chemistry of ectomycorrhizal mats in forest soil // Soil Biol. Biochem. 1994. Vol. 26.

9. Kalinowski B.E., Schweda P. Kinetics of muscovite, phlogopite, and biotite dissolution at pH 1—4, room temperature // Geochim. Cosmochim. Acta. 1996. Vol. 60.

10. Li X., Lu J., Wu L. et al. Potassium fixation and release characteristics in rhizosphere and non-rhizosphere soils for a rapeseed-rice cropping sequence // Communic. in Soil Sci. and Plant Analysis. 2010. Vol. 41, N 7.

11. Nielsen J.D., Moberg J.P. The influence of К depletion on mineralogical changes in pedons from two field experiments and in soils from four pot experiments // Acta Agricult. Scandinav. 1984. Vol. 34.

12. Tributh H., Boguslavski E., Lieres A. et al. Effect of potassium removal by crops on transformation of illitic clay minerals // Soil Sci. 1987. Vol. 143, N 6.

13. Turpault М.-P., Righi D., Uterano C. Clay minerals: precise markers of the spatial and temporal variability of the biogeochemical soil environment // Geoderma. 2008. Vol. 147.

14. Turpault М.-P., Uterano C., Boudot J.-P., Ran-J. Influence of mature Douglas fir roots on the solid soil phase of the rhizosphere and its solution chemistry // Plant and Soil. 2005. Vol. 275.

15. Zhang J., George E. Changes in the extractability of cations (Ca, Mg and K) in the rhizosphere soil of Norway spruce (Picea abies) roots // Plant and Soil. 2002. Vol. 243.