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@ARTICLE{Uhlig:1007175,
      author       = {Uhlig, David and Berns, Anne E. and Wu, Bei and Amelung,
                      Wulf},
      title        = {{M}ean nutrient uptake depths of cereal crops change with
                      compost incorporation into subsoil – evidence from
                      87{S}r/86{S}r ratios},
      journal      = {Plant and soil},
      volume       = {489},
      issn         = {0032-079X},
      address      = {Dordrecht [u.a.]},
      publisher    = {Springer Science + Business Media B.V},
      reportid     = {FZJ-2023-01973},
      pages        = {613–628},
      year         = {2023},
      abstract     = {Background and AimsRoot restricting layers often hinder
                      crops from accessing the large reservoir of bioavailable
                      mineral nutrients situated in subsoil. This study aims to
                      explore changes in the mean nutrient uptake depth of cereal
                      crops when removing root restricting layers through subsoil
                      management.MethodsSubsoil management was performed by deep
                      loosening, cultivation of lucerne as deep-rooting pre-crop,
                      and their combination with compost incorporation. Management
                      effects were evaluated by means of shoot biomass and element
                      concentrations in shoots and soil compartments. The mean
                      nutrient uptake depth was fingerprinted by graphically
                      matching the 87Sr/86Sr ratios in shoots with the 87Sr/86Sr
                      ratios in the exchangeable fraction in soil. Nutrient uplift
                      from depth to topsoil was inferred from element
                      concentrations in the exchangeable fraction in
                      soil.ResultsShoot biomass remained constant in management
                      and control plots. The mean nutrient uptake depth changed
                      with subsoil management in the order: deep
                      loosening < control < deep loosening with compost
                      incorporation. The latter coincided with a reallocation of
                      compost-derived Na and hence resulted in increased levels of
                      bioavailable Na below the depth of compost incorporation,
                      which may have led to an improved water use efficiency of
                      the crops. Thus, Na relocation triggered the deepening of
                      the mean uptake depth of water and nutrients. Moreover,
                      nutrient uplift from depth to topsoil was evident 21 months
                      after subsoiling.ConclusionSubsoil management by deep
                      loosening with compost incorporation provides a sustainable
                      use of soil resources because otherwise unused deep
                      geogenic-derived nutrient reservoirs were additionally
                      involved in crop nutrition.},
      cin          = {IBG-3},
      ddc          = {580},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {2173 - Agro-biogeosystems: controls, feedbacks and impact
                      (POF4-217)},
      pid          = {G:(DE-HGF)POF4-2173},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000984138600001},
      doi          = {10.1007/s11104-023-06047-x},
      url          = {https://juser.fz-juelich.de/record/1007175},
}