Aluminium, extractable from soil samples by the acid ammonium acetate soil-testing method

  • Osmo Mäkitie Agricultural Research Centre, Department of Soil Science, Tikkurila, Finland

Abstract

The extractant, 0.5 M acetic acid –0.5 M ammonium acetate at pH 4.65, which is used in soil-testing, extracts relatively high amounts of aluminium from acid soils. The mean values of acetate-extractable aluminium at pH 4.65, 1.75 meq Al/100 g of soil, and of exchangeable aluminium (M KCI extraction), 0.41 meq Al were obtained from a material of 30 samples of acid soils (Table 2). Several other acetic acid ammonium acetate extractants, from M acetic acid to M ammonium acetate solution were also used for studying the extractability of soil aluminium. The soil-testing extractant can be used for the estimation of the soluble amounts of aluminium in acid soils, however, further studies are needed for a better interpretation of the ammonium acetate extractable (at pH 4.65) aluminium in our soils.

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Section
Articles
Published
May 1, 1968
How to Cite
Mäkitie, O. (1968). Aluminium, extractable from soil samples by the acid ammonium acetate soil-testing method. Agricultural and Food Science, 40(2), 54-59. https://doi.org/10.23986/afsci.71699