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. 2019 Jul 16;10:904. doi: 10.3389/fpls.2019.00904

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Copyright © 2019 Beauchêne, Leroy, Fournier, Huet, Bonnefoy, Lorgeou, de Solan, Piquemal, Thomas and Cohan.

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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Green fraction (%) during the growing season (A) with the mean of well-watered conditions with nitrogen input (WW N, in blue) against well-watered conditions without nitrogen input (WW N0, in green) and (B) with the mean of well-watered conditions with nitrogen input (WW N, in blue) against water deficient conditions with nitrogen input (WD N+, in orange, N = 44, ±SE) and curves of all varieties (in gray).