Figure 7
The impact of various levels of acidified biochar (0%, 0.45%, 0.90%, 1.20%) on the growth of mint plants in both saline and lead-contaminated saline soil. The plant growth parameters assessed were the shoot Pb (A) and root Pb (B). To determine the significance of the differences between the various acidified biochar application levels, Fisher’s LSD analysis was employed, and the bars on the graphs show the letters that correspond to statistically significant differences (p ≤ 0.05).
