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. 2019 Jun 13;9:8615. doi: 10.1038/s41598-019-44530-7

Figure 2.

Figure 2

Concentrations (Mean ± SD, n = 3) of the seven phenolic acids (a,b) and their ratios (c) in soil samples and dendrogram from hierarchical cluster analysis using the between-group linkage method and squared Euclidean distance (d). Error bars denote the standard deviation of the mean (n = 3), and data designated with the same letter are not significantly (P < 0.05) different, according to Fisher’s least significant difference method.