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@ARTICLE{Pohlmeier:365,
      author       = {Pohlmeier, A. and Oros-Peusquens, A.-M. and Javaux, M. and
                      Menzel, M. I. and Vanderborght, J. and Kaffanke, J. and
                      Romazetti, S. and Lindenmair, J. and Vereecken, H. and Shah,
                      J. N.},
      title        = {{C}hanges in {S}oil {W}ater {C}ontent {R}esulting from
                      {R}icinus {R}oot {U}ptake {M}onitored by {M}agnetic
                      {R}esonance {I}maging},
      journal      = {Vadose zone journal},
      volume       = {7},
      issn         = {1539-1663},
      address      = {Madison, Wis.},
      publisher    = {SSSA},
      reportid     = {PreJuSER-365},
      pages        = {1010 - 1017},
      year         = {2008},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Magnetic resonance imaging (MRI) was used to study the soil
                      water content changes caused by root water uptake. A
                      4-wk-old Ricinus communis carmencita with a highly developed
                      root system was planted in a cylindrical container filled
                      with a model soil ( $99.5\%$ fine sand, $0.5\%$ clay), fully
                      water saturated. The bottom and surface of the container
                      were sealed so that water loss by factors other than
                      transpiration via the leaves could be neglected. The water
                      content of the soil was monitored for 3 wk using the MRI
                      sequence SPRITE at an isotropic spatial resolution of 6.3
                      mm. In contrast to conventionally used MRI sequences, the
                      T-2* relaxation was monitored, temporally resolved, and
                      extrapolated to zero. This procedure is a better measure of
                      water content than a single signal at a given time point
                      since it eliminates varying MRI relaxation times during soil
                      desiccation. A linear correlation between the MRI-determined
                      and gravimetrically measured total water content proves the
                      correctness of the monitoring and data evaluation procedure.
                      Simultaneously, the root architecture was also imaged at 0.6
                      mm isotropic resolution by the MRI sequence constructive
                      interference in steady state (CISS), which yielded a good
                      contrast between soil and roots. The coregistration of both
                      types of imaging ( water content and root architecture)
                      indicates that greater changes in water content took place
                      in the bottom region and near the surface, where the highest
                      root densities were found.},
      keywords     = {J (WoSType)},
      cin          = {ICG-4 / INB-3 / ICG-3 / JARA-ENERGY / JARA-SIM},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB793 / I:(DE-Juel1)INB-3-20090406 /
                      I:(DE-Juel1)ICG-3-20090406 / $I:(DE-82)080011_20140620$ /
                      I:(DE-Juel1)VDB1045},
      pnm          = {Terrestrische Umwelt / Funktion und Dysfunktion des
                      Nervensystems},
      pid          = {G:(DE-Juel1)FUEK407 / G:(DE-Juel1)FUEK409},
      shelfmark    = {Environmental Sciences / Soil Science / Water Resources},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000258444600006},
      doi          = {10.2136/vzj2007.0110},
      url          = {https://juser.fz-juelich.de/record/365},
}