Biochar Amendment Suppressed Fusarium Wilt and Altered the Rhizosphere Microbial Composition of Tomatoes

The effectiveness of biochar application to promote plant growth and suppress diseases is usually dependent on the dose biochar. Here, we evaluated effects supplied at 0%, 1%, 2%, 3% (w/w) tomato growth, Fusarium wilt disease severity, rhizosphere microbial community diversity. We found that applied 1% 2% promoted decreased severity disease. High-throughput amplicon sequencing indicated alpha diversity altered composition bacterial fungal in rhizosphere, increasing abundance potential plant-beneficial microorganisms. Quantitative PCR confirmed all doses increased bacteria; fungi oxysporum f. sp. Lycopersici (FOL), while FOL. Our results suppressed disease, which might be linked change structure microorganisms such as Pseudomonas within microbiome.