Fig. 10

Association of environmental variables and bacterial community composition of the substrate. Canonical correspondence analysis (CCA) (A). The pH (B), total organic carbon (TOC) (C), sulfate (D), fluoride (E), phosphate (F), and chloride (G) concentration of the substrate. Substrate samples were collected from container-grown Impatiens walleriana ‘Xtreme Red’. Plants were fertilized with 15N-2.2P-12.5 K-2.9Ca-1.2 Mg water-soluble fertilizer at 25, 100, and 200 mg/L of nitrogen (N). Samples were collected at budding (4 weeks after transplant) and full flowering (8 weeks after transplant). Bars represent the mean ± standard error (n = 6). Bars sharing the same letter are not statistically different (p > 0.05) according to the Fisher least significant difference test