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Convex hull volumes for 10-d-old plants grown in uncompacted (A) and compacted loamy sand soil (B). Vertical lines with arrow heads illustrate maximum rooting depth. (C) Mean convex hull volumes for both compaction treatments and soil types. Error bars associated with the histograms in (C) show double standard errors of the mean; standard errors of the difference (SED) are shown for (1) soil type and (2) compaction treatment.
