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. 2019 Sep 4;10:2047. doi: 10.3389/fmicb.2019.02047

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Copyright © 2019 Piazza, Ercoli, Nuti and Pellegrino.

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) and the copyright owner(s) 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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Community diversity of prokaryotic phyla (A), fungal phyla (B), Ascomycota classes (C), Basidiomycota classes (D) shown as relative abundances of operational taxonomic units found in soil under long-term tillage and nitrogen fertilization. Treatments are: MTN0 (minimum tillage and 0 kg N ha^–1), MTN200 (minimum tillage and 200 kg N ha^–1), CTN0 (conventional tillage and 0 kg N ha^–1) and CTN200 (conventional tillage and 200 kg N ha^–1). Soil depths are: 0–15 and 15–30 cm soil depths.