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. 2022 Jan 7;17(1):e0262140. doi: 10.1371/journal.pone.0262140

Fig 5.

Fig 5

Effect different levels of tannery wastewater on the uptake/accumulation of Zn contents in the roots (A), Zn contents in the shoots (B) Fe contents in the roots (C), Fe contents in the shoots (D) Cr contents in the roots (E) and Cr contents in the shoots (F) under the application of Zn and Fe-lys on B. napus. Values are demonstrated as means of three replicates along with standard deviation (SD; n = 3). One-way ANOVA was performed and means differences were tested by HSD (P < 0.05). Different lowercase letters on the error bars indicate significant difference between the treatments. Different levels of tannery wastewater used are as follow: 0 (without irrigation with wastewater), 33 (33% irrigation with wastewater), 66 (66% irrigation with wastewater) and 100 (100% irrigation with wastewater).