Relationship between 1 M KCl-extractable aluminum and pyrophosphate-extractable aluminum in a horizons of non-allophanic andosols

Tadashi Takahashi, Takashi Sato, Atsushi Sato, Masami Nanzyo, Takashi Sato, Atsushi Sato

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In the A horizons of non-allophanic Andosols, the concentrations of aluminum in the soil solution were considered to be largely controlled by Al-humus complexes (Takahashi et al. 1995: Soil Sci. Plant Nutr., 41, 119–131). Most of these soils displayed high concentrations of exchangeable Al which is toxic to plant roots due to its presumed rapid release kinetics to the soil solution. It is, therefore, likely that exchangeable Al is considerably influenced by Al-humus complexes. To confirm this assumption, we investigated the relationship between the amounts of 1 M KCl-extractable Al and pyrophosphate-extractable Al (Alp) using 25 A horizon samples of non-allophanic Andosols from Noshiro City, Akita Prefecture. A significant positive correlation was observed between the AI saturation (KCl-Al / effective CEC) and Alp concentration (r = 0.714, p < 0.001).

Original languageEnglish
Pages (from-to)729-733
Number of pages5
JournalSoil Science and Plant Nutrition
Volume49
Issue number5
DOIs
Publication statusPublished - 2003 Oct 1

Keywords

  • Aluminum-humus complexes
  • Exchangeable aluminum
  • Kcl-extractable aluminum
  • Non-allophanic Andosols
  • Pyrophosphate-extractable aluminum

ASJC Scopus subject areas

  • Soil Science
  • Plant Science

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