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@ARTICLE{deMoraes:845902,
      author       = {de Moraes, Moacir Tuzzin and Bengough, A. Glyn and Debiasi,
                      Henrique and Franchini, Julio Cezar and Levien, Renato and
                      Schnepf, Andrea and Leitner, Daniel},
      title        = {{M}echanistic framework to link root growth models with
                      weather and soil physical properties, including example
                      applications to soybean growth in {B}razil},
      journal      = {Plant and soil},
      volume       = {428},
      number       = {1-2},
      issn         = {1573-5036},
      address      = {Dordrecht [u.a.]},
      publisher    = {Springer Science + Business Media B.V},
      reportid     = {FZJ-2018-03100},
      pages        = {67-92},
      year         = {2018},
      abstract     = {Background and aimsRoot elongation is generally limited by
                      a combination of mechanical impedance and water stress in
                      most arable soils. However, dynamic changes of soil
                      penetration resistance with soil water content are rarely
                      included in models for predicting root growth. Better
                      modelling frameworks are needed to understand root growth
                      interactions between plant genotype, soil management, and
                      climate. Aim of paper is to describe a new model of root
                      elongation in relation to soil physical characteristics like
                      penetration resistance, matric potential, and
                      hypoxia.MethodsA new diagrammatic framework is proposed to
                      illustrate the interaction between root elongation, soil
                      management, and climatic conditions. The new model was
                      written in Matlab®, using the root architecture model
                      RootBox and a model that solves the 1D Richards equations
                      for water flux in soil. Inputs: root architectural
                      parameters for Soybean; soil hydraulic properties; root
                      water uptake function in relation to matric flux potential;
                      root elongation rate as a function of soil physical
                      characteristics. Simulation scenarios: (a) compact soil
                      layer at 16 to 20 cm; (b) test against a field experiment in
                      Brazil during contrasting drought and normal rainfall
                      seasons.Results(a) Soil compaction substantially slowed root
                      growth into and below the compact layer. (b) Simulated root
                      length density was very similar to field measurements, which
                      was influenced greatly by drought. The main factor slowing
                      root elongation in the simulations was evaluated using a
                      stress reduction function.ConclusionThe proposed framework
                      offers a way to explore the interaction between soil
                      physical properties, weather and root growth. It may be
                      applied to most root elongation models, and offers the
                      potential to evaluate likely factors limiting root growth in
                      different soils and tillage regimes.},
      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},
      UT           = {WOS:000436129500004},
      doi          = {10.1007/s11104-018-3656-z},
      url          = {https://juser.fz-juelich.de/record/845902},
}