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. 2021 Jan 13;11:597745. doi: 10.3389/fmicb.2020.597745

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Copyright © 2021 Windisch, Sommermann, Babin, Chowdhury, Grosch, Moradtalab, Walker, Höglinger, El-Hasan, Armbruster, Nesme, Sørensen, Schellenberg, Geistlinger, Smalla, Rothballer, Ludewig and Neumann.

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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Shoot and root dry biomass (DM) and root morphology of lettuce (cv. Tizian). The plants were grown in minirhizotron culture for nine weeks in soils with long-term organic (HU-org, BIODYN2) or mineral (HU-min, CONMIN) fertilization history. Means ± standard errors of four independent replicates. Different lowercase letters indicate significant differences between organic vs. mineral fertilization tested separately for the sites HUB-LTE (A) and DOK-LTE (B) by one-way ANOVA, Tukey’s HSD pairwise test, p ≤ 0.05.