% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Menzel:353,
      author       = {Menzel, M. I. and Tittmann, S. and Bühler, J. and Preis,
                      St. and Wolters, N. and Jahnke, S. and Walter, A. and
                      Chlubek, A. and Leon, A. and Hermes, N. and Offenhäusser,
                      A. and Gilmer, F. and Blümler, P. and Schurr, U. and
                      Krause, H.-J.},
      title        = {{N}on-{I}nvasive {D}etermination of {P}lant {B}iomass with
                      {M}icrowave {R}esonators},
      journal      = {Plant, cell $\&$ environment},
      volume       = {32},
      issn         = {0140-7791},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {PreJuSER-353},
      pages        = {368 - 379},
      year         = {2009},
      note         = {The authors recognize and appreciate support through
                      funding by Technology Transfer Department, Forschungszentrum
                      Julich and support through providing a miniaturized
                      electronic module by Julicher SQUID GmbH.},
      abstract     = {Non-invasive and rapid determination of plant biomass would
                      be beneficial for a number of research aims. Here, we
                      present a novel device to non-invasively determine plant
                      water content as a proxy for plant biomass. It is based on
                      changes of dielectric properties inside a microwave cavity
                      resonator induced by inserted plant material. The water
                      content of inserted shoots leads to a discrete shift in the
                      centre frequency of the resonator. Calibration measurements
                      with pure water showed good spatial homogeneity in the
                      detection volume of the microwave resonators and clear
                      correlations between water content and centre frequency
                      shift. For cut tomato and tobacco shoots, linear
                      correlations between fresh weight and centre frequency shift
                      were established. These correlations were used to
                      continuously monitor diel growth patterns of intact plants
                      and to determine biomass increase over several days.
                      Interferences from soil and root water were excluded by
                      shielding pots with copper. The presented proof of principle
                      shows that microwave resonators are promising tools to
                      quantitatively detect the water content of plants and to
                      determine plant biomass. As the method is non-invasive,
                      integrative and fast, it provides the opportunity for
                      detailed, dynamic analyses of plant growth, water status and
                      phenotype.},
      keywords     = {Biomass / Microwaves / Plant Shoots: chemistry / Plants:
                      chemistry / Plants: growth $\&$ development / Water:
                      analysis / Water (NLM Chemicals) / J (WoSType)},
      cin          = {IBN-2 / ICG-3 / ICG-4 / JARA-FIT},
      ddc          = {570},
      cid          = {I:(DE-Juel1)IBN-2-20090406 / I:(DE-Juel1)ICG-3-20090406 /
                      I:(DE-Juel1)VDB793 / $I:(DE-82)080009_20140620$},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Plant Sciences},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:19143992},
      UT           = {WOS:000263910800005},
      doi          = {10.1111/j.1365-3040.2009.01931.x},
      url          = {https://juser.fz-juelich.de/record/353},
}