Plant and Soil

, Volume 149, Issue 2, pp 289–291

Influence of root-induced pH on the solubility of soil aluminium in the rhizosphere

  • Tara Singh Gahoonia
Short Communication

DOI: 10.1007/BF00016620

Cite this article as:
Gahoonia, T.S. Plant Soil (1993) 149: 289. doi:10.1007/BF00016620


Increase in solubility of soil aluminium (Al) as a result of root-induced decrease of soil pH was studied. Soil samples of known distances from the roots of NH4-N fertilized Ryegrass were analyzed for pH and aluminium extractable with 0.01 M CaCl2. Results showed that though no Al was found in bulk soil (pH 6.8), its concentration in the vicinity of roots increased to 0.023 mM with a concomitant decrease of soil pH from 6.8 to 4.4.

Key words

aluminium toxicity rhizosphere soil pH 

Copyright information

© Kluwer Academic Publishers 1993

Authors and Affiliations

  • Tara Singh Gahoonia
    • 1
  1. 1.Institute for Agricultural ChemistryGeorg-August UniversityGöttingenGermany
  2. 2.Section for Soil and Water and Plant Nutrition, Department of Agricultural SciencesThe Royal Veterinary and Agricultural UniversityFrederiksberg, CopenhagenDenmark