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We evaluated how root-induced changes in rhizosphere pH varied and interacted with Cu availability and bioavailability in an acidic soil. Rape was grown on a Cu-contaminated acidic soil, which had been limed at 10 rates. Soil Cu bioavailability was not influenced by liming. However, liming significantly decreased CaCl 2 –extracted Cu for pH between 3.7 and 5.1. Little effect was found for...
This work investigated how copper (Cu) phytotoxicity affected iron (Fe) nutrition and root elongation in hydroponically grown durum wheat (Triticum turgidum durum L., cv Acalou) in order to establish the critical level of Cu concentration in roots above which significant Cu phytotoxicity occurs. This was assessed at two levels of Fe supply (2 and 100 μM). Severe symptoms of Cu phytotoxicity were observed...
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