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. 2022 Jan 28;12:809322. doi: 10.3389/fpls.2021.809322

FIGURE 4.

FIGURE 4

Effect of combined application of TU and BC on (A) hydrogen peroxide (H2O2), (B) malondialdehyde (MDA), and (C) SPAD value grown under Cd contamination. Values are averages ± SD (n = 3). Different statistical letters represent significant differences in values between treatments (p < 0.05). TU, thiourea; BC, biochar; T0 = 0 mg L–1; T1 = 600 mg L–1; T2 = 600 mg L–1; B0 = 0% w/w; B1 = 2.5% w/w; B2 = 5.0% w/w.