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@ARTICLE{Panettieri:134867,
      author       = {Panettieri, M. and Knicker, H. and Berns, A.E. and Murillo,
                      J.M. and Madejón, E.},
      title        = {{M}oldboard plowing effects on soil aggregation and soil
                      organic matter quality assessed by 13{C} {CPMAS} {NMR} and
                      biochemical analyses},
      journal      = {Agriculture, ecosystems $\&$ environment},
      volume       = {177},
      issn         = {0167-8809},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2013-02917},
      pages        = {48 - 57},
      year         = {2013},
      abstract     = {The impact on soil aggregates status of two tillage
                      practices (moldboard plowing, TT, and chisel plowing, RT)
                      applied to a farm previously cultivated under no-tillage
                      (NT) was studied. The experiment was carried out on a Leptic
                      Typic Xerorthent soil at the “Las Navas” dryland
                      experimental farm located in Jerez de la Frontera (Cadiz, SW
                      Spain). Several organic C pools such as total organic carbon
                      (TOC), water soluble carbon (WSC), permanganate oxidizable
                      carbon (POxC), and microbial biomass carbon (MBC) were
                      analyzed, together with two enzymatic activities related to
                      soil organic matter (SOM) oxidization metabolism:
                      dehydrogenase activity (DH) and β-glucosidase activity
                      (β-Glu). 13C cross polarization magic angle spinning
                      nuclear magnetic resonance (13C CPMAS NMR) spectroscopy was
                      used to characterize the composition of the SOM and its
                      degradation status. Two years after the implementation of
                      the new management practices, analysis of the aggregate
                      distribution of the topsoil (0–10 cm) showed that, even
                      after a short term, TT enhanced aggregate disruption. The
                      apparent reduction in soil quality of TT plots was evident
                      from the lower contents of total organic carbon (TOC),
                      permanganate oxidizable carbon (POxC) and microbial biomass
                      carbon (MBC) if compared with RT and NT. Moreover, TT soil
                      showed also a lower β-glucosidase activity. As confirmed by
                      13C CPMAS NMR, the SOM of the TT fractions revealed higher
                      alkyl C to O-alkyl ratios than their RT and NT counterparts.
                      Also signals commonly referred to lignin structures were
                      absent in the spectra of the TT fractions, but were still
                      present in those of the larger fractions of the NT
                      treatment. After a short term evaluation, RT samples did not
                      show the same declining trend as observed for the TT
                      treatment. For this reason, chisel plowing seems to offer a
                      viable occasional management option when required during
                      long-term NT.},
      cin          = {IBG-3},
      ddc          = {330},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {246 - Modelling and Monitoring Terrestrial Systems: Methods
                      and Technologies (POF2-246)},
      pid          = {G:(DE-HGF)POF2-246},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000325122700007},
      doi          = {10.1016/j.agee.2013.05.025},
      url          = {https://juser.fz-juelich.de/record/134867},
}