Summary
Of three background solutions tested, 0.5 g dm−3 Ca(NO3)2·4H2O, full strength and 0.1 strength Long Ashton solution, the latter was the most suitable for screening for A1 tolerance inHolcus lanatus L.
On the basis of solution pH fluxes, precipitation of Al compounds and apparent toxicity of Al, it was concluded that equimolar concentrations of nitrate and ammonium nitrogen was more suitable as the N source than nitrate alone when screening in acidic solutions (cationic Al) but the reverse was true for screening in alkaline solutions (anionic Al).
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McCain, S., Davies, M.S. The influence of background solution on root responses to aluminium inHolcus lanatus L.. Plant Soil 73, 425–430 (1983). https://doi.org/10.1007/BF02184320
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DOI: https://doi.org/10.1007/BF02184320