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. 2019 Feb 19;10:131. doi: 10.3389/fpls.2019.00131

FIGURE 9.

FIGURE 9

Free amino acid concentrations in each tissue of soybean plants on 24 DAP supplied with various N compounds from 21 to 24 DAP (Experiment 3). (A) Nodules. (B) Roots. (C) Stems. (D) Leaves. Averages are shown (n = 4).