Abstract
Wheat (Triticum aestivum L.) seedlings were grown for 4 days in an acid soil horizon treated with 10 levels each of Ca(OH)2, CaSO4 and CaCl2. The treatments resulted in a wide range of Al levels and Al speciation in soil solution. Seedling root length in the Ca(OH)2 treatments was significantly related (p<0.01) to calculated Al3+ activity in soil solution. The Al−SO4 complex in soil solution had a negligible effect on the root growth of Hart wheat, thus confirming the previously reached conclusion concerning the nonphytotoxicity of Al−SO4. The short-term seedling root growth technique used in this investigation allowed for separation of Al effects on root elongation from those on plant nutrition and should be useful for studying Al toxicity relationships in soil.
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Wright, R.J., Baligar, V.C., Ritchey, K.D. et al. Influence of soil solution aluminum on root elongation of wheat seedlings. Plant Soil 113, 294–298 (1989). https://doi.org/10.1007/BF02280197
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DOI: https://doi.org/10.1007/BF02280197