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. 2017 Dec 11;8:2414. doi: 10.3389/fmicb.2017.02414

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Copyright © 2017 Emmett, Youngblut, Buckley and Drinkwater.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Potential activity of extracellular beta-xylosidase (BX), cellobiohydrolase (CB), leucine aminopeptidase (LAP), and N-acetyl-glucosaminidase (NAG) in bare soil and rhizosphere samples from plots receiving 0 kg N ha^-1 (gray bars) and 95 kg N ha^-1 (black bars). Letters indicate a significant difference between treatments (Tukey HSD p < 0.05). Note that scale of y-axis differs among plots.