Co-application of dazomet and azoxystrobin reconstructs soil microbial communities and suppresses the violet root rot of <i>Codonopsis tangshen</i> under a continuous cropping system.

ABSTRACT: Violet root rot (VRR) is a devastating soil-borne disease that severely affects Codonopsis tangshen (C. tangshen) production, with limited effective control strategies available. This study aimed to develop an effective method for controlling VRR and explore its underlying mechanisms. A 2-year field experiment was conducted to investigate the impact of dazomet fumigant alone (D) and in combination with azoxystrobin (DA) on the yield, VRR incidence, medicinal component level, soil biochemical properties, and rhizosphere microbial community structure of continuously cropped C. tangshen. The results showed that both D and DA significantly increased the yield by 112.3% and 173.8% in 2019, and by 179.1% and 520.9% in 2020, respectively. Moreover, D and DA significantly redu

SUBMITTER: Zhou W 

PROVIDER: S-EPMC12403846 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature