1. Relief effect of biochar on continuous cropping of tobacco through the reduction of p-hydroxybenzoic acid in soil
- Author
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Haijun Hu, Jun Meng, Huan Zheng, Heqing Cai, Maoxian Wang, Zhenbao Luo, Yang E, Caibin Li, Qiaoxue Wu, Zhiqiang Yan, and Yue Lei
- Subjects
Tobacco ,Biochar ,p-hydroxybenzoic acid ,Adsorption ,Continuous cropping ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
Biochar application to soil has proven to be an excellent approach for decreasing the concentration of auto-toxic compounds and promoting plant growth in continuous-cropping fields. However, the mechanisms underlying the action pathway among biochars, auto-toxic compounds and tobacco remain unknown. In this study, we conducted an experiment tracking the incidence rate of black rot and auto-toxic compounds for a 3-year continuous-cropping tobacco pot trial in response to biochar treatment intensity compared with that of non-biochar treatment. Biochar inhibited the incidence of black rot. Using ultra-high-performance liquid chromatography–mass spectrometry (UPLC‒MS/MS), we revealed that biochar can effectively decrease the concentration of p-hydroxybenzoic acid (PHA), which is associated with the incidence rate of black rot (R2 = 0.890, p
- Published
- 2024
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