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. 2014 Jan 21;15(1):1466–1480. doi: 10.3390/ijms15011466

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© 2014 by the authors; licensee MDPI, Basel, Switzerland

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 1. — Characteristics of 5-week old plants inoculated with rhizobia, but given different levels of nitrogen fertilizer: (A) nodule dry weight; (B) percent total nitrogen; (C) ureide concentration (as allantoin) in the leaves; (D) aboveground plant dry mass. High-N = High N fertilizer treatment, Low-N = Low N fertilizer treatment, and No-N = no fertilizer. Different lowercase letters indicate significant differences for that characteristic, while n.s. indicates no significant difference. Results shown as means ± S.E.