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@INPROCEEDINGS{vanDusschoten:280505,
      author       = {van Dusschoten, Dagmar and Kochs, Johannes and Pflugfelder,
                      Daniel and Koller, Robert and Postma, Johannes Auke},
      title        = {{W}ater uptake of main root segments in a multiple
                      compartment root container},
      reportid     = {FZJ-2016-00273},
      year         = {2015},
      abstract     = {IntroductionThe root hydraulic conductances, and how they
                      are affected by root anatomy and or root aging, are
                      currently poorly understood, despite the importance of the
                      hydraulic conductivities for water uptake, especially in
                      drought environments. Here we describe a multi compartment
                      container that reduces root intermingling and minimizes
                      water movement between soil compartments. Additionally, a
                      Magnetic Resonance Imaging (MRI) compatible soil water
                      sensor was developed which can be inserted into each
                      compartment for soil water monitoring.MethodsWe constructed
                      a multi compartment container (up to 13 compartments) filled
                      with quartz sand and mixed with sieved loamy soil taken from
                      an agricultural plot (9:1). MRI was used to quantify root
                      development within each compartment as was the local amount
                      of soil water in each compartment. The soil water content
                      was also monitored using home designed soil water sensors
                      which readings used to adjust the water content in each
                      compartment during growth. Results and discussionUsage of
                      this soil mix allowed visualization of a major fraction of
                      Brachypodium laterals. Maize plant growth was not obviously
                      changed by the multi compartment container during 6 weeks of
                      growth. Root development was successfully measured within
                      each compartment and the water content was monitored at
                      different growth stages using optimized MRI protocols.
                      During growth the soil water content for each compartment
                      could be adjusted according to the readings of the soil
                      water sensors that were also found not to diminish MRI image
                      quality.ConclusionThe combination of a multi compartment
                      container, MRI measurements of roots and soil water and the
                      use of newly designed soil water sensors, allows the
                      monitoring of root water uptake of individual root segments.
                      This combination is therefore promising to study the effects
                      of root age and anatomy on water uptake and the effects of
                      nutrients on growth of different root classes.},
      month         = {Oct},
      date          = {2015-10-06},
      organization  = {9th International Symposium of
                       International Society of Root Research,
                       Canberra (Australia), 6 Oct 2015 - 9
                       Oct 2015},
      subtyp        = {Other},
      cin          = {IBG-2},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {582 - Plant Science (POF3-582)},
      pid          = {G:(DE-HGF)POF3-582},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/280505},
}