Fig. 3. Dynamics of labeled N in NO^-₃ (NL) and NH⁺₄ (AL) pools of Soil 2 after different treatments: Treatment 1, 10 mg labeled NH⁺₄–N kg^-1; Treatment 2, 10 mg labeled NH⁺₄–N + 1000 mg C kg^-1; and Treatment 3, 100 mg labeled NH⁺₄–N + 1000 mg C kg^-1. The vertical bars represent ±SD.

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