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@ARTICLE{Panettieri:202909,
      author       = {Panettieri, M. and Berns, A. E. and Knicker, H. and
                      Murillo, J. M. and Madejón, E.},
      title        = {{E}valuation of seasonal variability of soil biogeochemical
                      properties in aggregate-size fractioned soil under different
                      tillages},
      journal      = {Soil $\&$ tillage research},
      volume       = {151},
      issn         = {0167-1987},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2015-05055},
      pages        = {39 - 49},
      year         = {2015},
      abstract     = {An augment of soil organic matter (SUM) in agricultural
                      lands is mandatory to improve soil quality and fertility and
                      to limit greenhouse gases emissions. A better protection of
                      SUM from degradation is seconded to its inclusion in
                      aggregates and to the formation of organo-mineral
                      interactions with the clay fraction within the soil matrix.
                      Under Mediterranean conditions, conservation agriculture
                      (CA) has been widely related with macro-aggregates
                      formation, SUM protection, and to an improvement of soil
                      fertility and crop yields. The objective of this work was to
                      evaluate the biogeochemical properties of five
                      aggregate-size fractions obtained by dry sieving of a Calcic
                      Fluvisol of an experimental farm managed under three
                      different tillages. Soil aggregates distribution, total
                      organic carbon (TUC), labile carbon pools, and enzymatic
                      activities were measured in 2 different periods of the same
                      agricultural campaign. CPMAS C-13 NMR analyses were also
                      performed to elucidate the structure of preserved SOM. The
                      results evidenced seasonal variability in aggregate
                      distribution, labile carbon pools and dehydrogenase activity
                      (DHA), whereas TOC, permanganate oxidizable carbon (POxC),
                      and p-glucosidase activity demonstrated to be reliable soil
                      quality indices for soil fractions. The NMR analyses showed
                      a better SUM preservation under conservation tillages, due
                      to higher plant litter inputs and/or higher amount of
                      necromass derived compounds if compared with traditional
                      tillage. Particularly interesting are the results of the
                      circle divide 0.5-1 mm fraction, in which different trends
                      were found for beta-Glu and several organic compound classes
                      if compared with the other fractions. Possibly, in this
                      fraction are concentrated most of the products from
                      cellulose depolymerization stabilized by organo-mineral
                      interactions. (C) 2015 Elsevier B.V. All rights reserved.},
      cin          = {IBG-3},
      ddc          = {630},
      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           = {10.1016/j.still.2015.02.008},
      UT           = {WOS:000353093200005},
      doi          = {10.1016/j.still.2015.02.008},
      url          = {https://juser.fz-juelich.de/record/202909},
}