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Impact of biochar or absorber amendments on the content and redox state of ascorbate in leaves of Chenopodium quinoa Willd. (variety ICBA-5) plants after culture without additional NaCl or 27 days of salt treatment. (A) Total ascorbate content, (B) content of oxidized and (C) reduced ascorbate. Values represent mean ± SE (n = 5), and the different letters a to c indicate significant differences between the treatments. Control (0), 300 mM NaCl (300), biochar (Bc), absorber (Ab).
