Physiochemical Properties and Microflora of the Rhizosphere Soil of Tobacco Plants with and without Bacterial Wilt

Bacterial wilt is a destructive soilborne disease caused by Ralstonia solanacearum, posing severe threat to plants in the Solanaceae family. It impacts on tobacco productivity worldwide. This study was conducted analyze changes soil’s physical and chemical properties, number of microbes, bacterial diversity rhizosphere soil before after disease. The healthy diseased collected from Pucheng, Nanping, Fujian Province, Southern China. results revealed significant differences trends properties plants. pH, available potassium (K), phosphorous (P), organic matter contents (SOM) were lower for than pre-diseased (HW). Only P, among all (HS), significantly those (HW), changing 149.59 mg/kg 59.19 mg/kg. order numbers three main microbes (HC) following: bacteria > actinomycetes fungi. increased significantly. A comparison showed that relative abundance community pathogenic changed increased, Pseudomonadaceae, which pathogen belonged, rose certain extent. Both microbial quantity, diversity, thus proving closely related ecological environment.