Mixing bamboo charcoal with vinasse fertilizer to remediate the phytotoxicity of quinclorac to tobacco

Abstract

ABSTRACT Modern agriculture has caused extensive soil pesticide contamination, which is a global concern. This study explored the potential of bamboo charcoal (BC) to alleviate quinclorac-induced stress in tobacco plants. A pot experiment was conducted to investigate the effects of BC and vinasse fertilizer (VF) on the growth and physiological parameters of tobacco plants subjected to quinclorac stress. At 30, 60, and 90 d after transplantation, BC and VF exhibited pronounced restorative effects on quinclorac-stressed tobacco plants. The treatments improved plant height, leaf length, and leaf width, and enhanced leaf quality and various biochemical indicators. Treatment with 500 g VF + 4% BC resulted in the lowest residual quinclorac levels in both the soil and leaves. Treatment with 500 g VF + 2% BC resulted in the most significant recovery of agronomic traits, whereas 500 g VF + 0.5% BC was the most effective in enhancing leaf quality. However, the effectiveness of BC decreased with time following application, and furthermore, quinclorac may be released from the BC. In conclusion, BC shows promise in alleviating the adverse effects of quinclorac stress in tobacco plants.