001007634 001__ 1007634
001007634 005__ 20240226075228.0
001007634 037__ $$aFZJ-2023-02126
001007634 1001_ $$0P:(DE-Juel1)177770$$aUhlig, David$$b0$$eCorresponding author$$ufzj
001007634 1112_ $$aGeoMinKöln 2022$$cKöln$$d2022-09-11 - 2022-09-15$$wGermany
001007634 245__ $$aAre magnesium stable isotopes a valuable geochemical tool in agronomy?
001007634 260__ $$c2022
001007634 3367_ $$033$$2EndNote$$aConference Paper
001007634 3367_ $$2DataCite$$aOther
001007634 3367_ $$2BibTeX$$aINPROCEEDINGS
001007634 3367_ $$2DRIVER$$aconferenceObject
001007634 3367_ $$2ORCID$$aLECTURE_SPEECH
001007634 3367_ $$0PUB:(DE-HGF)6$$2PUB:(DE-HGF)$$aConference Presentation$$bconf$$mconf$$s1689049537_30333$$xOther
001007634 520__ $$aA sustainable use of soil resources is urgently required to cope with the increasing demand for agricultural products. Advanced soil cultivation methods like subsoiling were suggested but analytical tools to measure changes in the nutrient use efficiency of crops are still missing. Here we tested the applicability of Mg stable isotopes as novel evaluation tool in agronomy and validated our results with the nutrient uptake depth proxy 87Sr/86Sr.First, we conceptually demonstrated under which conditions changes in the Mg isotope composition (26Mg) of crops and the bioavailable fraction of Mg could be resolved from analytical uncertainty, when simulating subsoiling on soils with distinct Mg supply. Shifts in 26Mg values are only detectable if i) the crop uptake-related Mg isotope fractionation factor is high, ii) a high Mg uptake flux of crops faces a low Mg supply in soil, and iii) subsoiling causes a considerable deepening of the nutrient uptake depth.Second, we tested our concept on field trials, where deep loosening with and without compost incorporation was conducted. Although 87Sr/86Sr indicates a deepening of the nutrient uptake depth after subsoiling with compost, shifts in 26Mg values of crops and the exchangeable fraction were mostly unresolvable from the analytical uncertainty. Yet, systematic shifts in 26Mg values among crops cultivated on and beside a melioration strip were found and attributed to the uplift of isotopically distinct compost-derived Mg. Still, Mg stable isotopes represent a valuable tool towards nutrient use efficiency measures on soils with low Mg supply, unless agricultural lime is applied.
001007634 536__ $$0G:(DE-HGF)POF4-2173$$a2173 - Agro-biogeosystems: controls, feedbacks and impact (POF4-217)$$cPOF4-217$$fPOF IV$$x0
001007634 536__ $$0G:(BMBF)031B0515C$$aBonaRes - (Modul A, Phase 2): Soil3-II - Nachhaltiges Unterbodenmanagement, Teilprojekt C (031B0515C)$$c031B0515C$$x1
001007634 7001_ $$0P:(DE-Juel1)138881$$aWu, Bei$$b1$$ufzj
001007634 7001_ $$0P:(DE-Juel1)129438$$aBerns, Anne E.$$b2$$ufzj
001007634 7001_ $$0P:(DE-Juel1)129427$$aAmelung, Wulf$$b3$$ufzj
001007634 909CO $$ooai:juser.fz-juelich.de:1007634$$pVDB
001007634 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)177770$$aForschungszentrum Jülich$$b0$$kFZJ
001007634 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)138881$$aForschungszentrum Jülich$$b1$$kFZJ
001007634 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)129438$$aForschungszentrum Jülich$$b2$$kFZJ
001007634 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)129427$$aForschungszentrum Jülich$$b3$$kFZJ
001007634 9131_ $$0G:(DE-HGF)POF4-217$$1G:(DE-HGF)POF4-210$$2G:(DE-HGF)POF4-200$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF4-2173$$aDE-HGF$$bForschungsbereich Erde und Umwelt$$lErde im Wandel – Unsere Zukunft nachhaltig gestalten$$vFür eine nachhaltige Bio-Ökonomie – von Ressourcen zu Produkten$$x0
001007634 9141_ $$y2023
001007634 9201_ $$0I:(DE-Juel1)IBG-3-20101118$$kIBG-3$$lAgrosphäre$$x0
001007634 980__ $$aconf
001007634 980__ $$aVDB
001007634 980__ $$aI:(DE-Juel1)IBG-3-20101118
001007634 980__ $$aUNRESTRICTED