Figure 8.

Effect of bamboo biochar on leaf antioxidant enzymatic activities in B. juncea. POD was expressed in mg g⁻¹ min⁻¹, PPO in U. g⁻¹ min⁻¹, CAT in U. g⁻¹ FW min⁻¹ and SOD U g⁻¹ FW. The data represent the mean of three replicates, and error bars are standard deviations. Means with different letters are significantly different (p < 0.05). (T1 = Control, T2 = 1.0% BB, T3 = 2.5% BB, T4 = 5.0% BB).