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@ARTICLE{deMoraes:866425,
      author       = {de Moraes, Moacir Tuzzin and Debiasi, Henrique and
                      Franchini, Julio Cezar and Bonetti, João de Andrade and
                      Levien, Renato and Schnepf, Andrea and Leitner, Daniel},
      title        = {{M}echanical and {H}ydric {S}tress {E}ffects on {M}aize
                      {R}oot {S}ystem {D}evelopment at {D}ifferent {S}oil
                      {C}ompaction {L}evels},
      journal      = {Frontiers in plant science},
      volume       = {10},
      issn         = {1664-462X},
      address      = {Lausanne},
      publisher    = {Frontiers Media},
      reportid     = {FZJ-2019-05572},
      pages        = {1358},
      year         = {2019},
      abstract     = {Soil mechanical resistance, aeration, and water
                      availability directly affect plant root growth. The
                      objective of this work was to identify the contribution of
                      mechanical and hydric stresses on maize root elongation, by
                      modeling root growth while taking the dynamics of these
                      stresses in an Oxisol into consideration. The maize crop was
                      cultivated under four compaction levels (soil chiseling,
                      no-tillage system, areas trafficked by a tractor, and
                      trafficked by a harvester), and we present a new model,
                      which allows to distinguish between mechanical and hydric
                      stresses. Root length density profiles, soil bulk density,
                      and soil water retention curves were determined for four
                      compaction levels up to 50 cm in depth. Furthermore, grain
                      yield and shoot biomass of maize were quantified. The new
                      model described the mechanical and hydric stresses during
                      maize growth with field data for the first time in maize
                      crop. Simulations of root length density in 1D and 2D showed
                      adequate agreement with the values measured under field
                      conditions. Simulation makes it possible to identify the
                      interaction between the soil physical conditions and maize
                      root growth. Compared to the no-tillage system, grain yield
                      was reduced due to compaction caused by harvester traffic
                      and by soil chiseling. The root growth was reduced by the
                      occurrence of mechanical and hydric stresses during the crop
                      cycle, the principal stresses were mechanical in origin for
                      areas with agricultural traffic, and water based in areas
                      with soil chiseling. Including mechanical and hydric
                      stresses in root growth models can help to predict future
                      scenarios, and coupling soil biophysical models with
                      weather, soil, and crop responses will help to improve
                      agricultural management.},
      cin          = {IBG-3},
      ddc          = {570},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {255 - Terrestrial Systems: From Observation to Prediction
                      (POF3-255)},
      pid          = {G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:31736998},
      UT           = {WOS:000497684100001},
      doi          = {10.3389/fpls.2019.01358},
      url          = {https://juser.fz-juelich.de/record/866425},
}