000874046 001__ 874046 000874046 005__ 20220930130230.0 000874046 0247_ $$2doi$$a10.1111/ejss.12944 000874046 0247_ $$2ISSN$$a0022-4588 000874046 0247_ $$2ISSN$$a1351-0754 000874046 0247_ $$2ISSN$$a1365-2389 000874046 0247_ $$2ISSN$$a2056-5240 000874046 0247_ $$2Handle$$a2128/26753 000874046 0247_ $$2altmetric$$aaltmetric:77687895 000874046 0247_ $$2WOS$$aWOS:000562445200001 000874046 037__ $$aFZJ-2020-01201 000874046 082__ $$a550 000874046 1001_ $$0P:(DE-Juel1)138881$$aWu, B.$$b0$$eCorresponding author 000874046 245__ $$aIron isotope fractionation in soil and graminaceous crops after 100 years of liming in the long-term agricultural experimental site at Berlin-Dahlem, Germany 000874046 260__ $$aOxford [u.a.]$$bWiley-Blackwell$$c2021 000874046 3367_ $$2DRIVER$$aarticle 000874046 3367_ $$2DataCite$$aOutput Types/Journal article 000874046 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1635149683_28703 000874046 3367_ $$2BibTeX$$aARTICLE 000874046 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000874046 3367_ $$00$$2EndNote$$aJournal Article 000874046 520__ $$aSustainable arable cropping relies on repeated liming. Yet, the associated increase in soil pH can reduce the availability of iron (Fe) to plants. We hypothesized that repeated liming, but not pedogenic processes such as lessivage (i.e., translocation of clay particles), alters the Fe cycle in Luvisol soil, therewith affecting Fe isotope composition in soils and crops. Hence, we analyzed Fe concentrations and isotope compositions in soil profiles and winter rye from the long‐term agricultural experimental site in Berlin‐Dahlem, Germany, where a controlled liming trial with three field replicates per treatment has been conducted on Albic Luvisols since 1923. Heterogeneity in subsoil was observed at this site for Fe concentration but not for Fe isotope composition. Lessivage had not affected Fe isotope composition in the soil profiles. The results also showed that almost 100 years of liming lowered the concentration of the HCl‐extractable Fe that was potentially available for plant uptake in the surface soil (0–15 cm) from 1.03 (SE 0.03) to 0.94 (SE 0.01) g kg−1. This HCl‐extractable Fe pool contained isotopically lighter Fe (δ56Fe = −0.05 to −0.29‰) than the bulk soil (δ56Fe = −0.08 to 0.08‰). However, its Fe isotope composition was not altered by the long‐term lime application. Liming resulted in relatively lower Fe concentrations in the roots of winter rye. In addition, liming led to a heavier Fe isotope composition of the whole plants compared with those grown in the non‐limed plots (δ56FeWholePlant_ + Lime = −0.12‰ SE 0.03 vs. δ56FeWholePlant_‐Lime = −0.21‰ SE 0.01). This suggests that the elevated soil pH (increased by 1 unit due to liming) promoted the Fe uptake strategy through complexation of Fe(III) from the rhizosphere, which favoured heavier Fe isotopes. Overall, the present study showed that liming and related increase in pH did not affect the Fe isotope compositions of the soil, but may influence the Fe isotope composition of plants grown in the soil if they alter their Fe uptake strategy upon the change of Fe availability. 000874046 536__ $$0G:(DE-HGF)POF4-2173$$a2173 - Agro-biogeosystems: controls, feedbacks and impact (POF4-217)$$cPOF4-217$$fPOF IV$$x0 000874046 588__ $$aDataset connected to CrossRef 000874046 7001_ $$0P:(DE-Juel1)168266$$aWang, Y.$$b1 000874046 7001_ $$0P:(DE-Juel1)129438$$aBerns, A. E.$$b2 000874046 7001_ $$0P:(DE-HGF)0$$aSchweitzer, K.$$b3 000874046 7001_ $$0P:(DE-HGF)0$$aBauke, S. 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