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. 2008 Jul 2;3(7):e2536. doi: 10.1371/journal.pone.0002536

Figure 8. Change in leaf number for Koeleria macrantha in the field with and without (±)-catechin injected into rhizosphere soils.

Figure 8

Error bars show 1 SE. We tested the effects of (±)-catechin on growth across all sites (n = 15 in each treatment at each site) with a two way ANOVA, with (±)-catechin as a fixed factor and site as a random factor (SPSS 15.0, SPSS, Chicago). ANOVA, Ftreatment = 8.86; df = 1,196; P = 0.025, Fsite = 3.09; df = 6,196; P = 0.098).