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. 2015 Oct 26;6:888. doi: 10.3389/fpls.2015.00888

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Copyright © 2015 Paradiso, Buonomo, Dixon, Barbieri and De Pascale.

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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Mean effects of nitrogen source in the nutrient solution and root inoculation with B. japonicum on the estimated leaf chlorophyll content (expressed as CCM-200 units) of soybean grown in NFT (52 DAS, stage of late flowering – beginning of seed formation; Average values ± Standard errors; n = 12). Average values of non inoculated and inoculated gullies fertigated with nitrate solution (NO₃) and urea solution (U). Average values of gullies fertigated with nitrate and urea solutions in non inoculated control (C) and inoculated treatment (I).