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@ARTICLE{VegaJarquin:811407,
      author       = {Vega-Jarquin, C. and Garcia-Mendoza, M. and Jablonowski, N.
                      and Luna-Guido, M. and Dendooven, L.},
      title        = {{R}apid immobilization of applied nitrogen in
                      saline–alkaline soils},
      journal      = {Plant and soil},
      volume       = {256},
      number       = {2},
      issn         = {0032-079X},
      address      = {Dordrecht [u.a.]},
      publisher    = {Springer Science + Business Media B.V},
      reportid     = {FZJ-2016-03891},
      pages        = {379 - 388},
      year         = {2003},
      abstract     = {The dynamics of inorganic N are important in soil, and this
                      applies particularly to the saline–alkaline soils of the
                      former lake Texcoco in Mexico with high pH and salinity
                      where a forestation program was started in the 1970s. In
                      soils of lake Texcoco, in Mexico, more than $50\%$ of
                      applied N could not be accounted for one day after
                      application of 200 mg kg−1 soil along with glucose
                      amendment. It was not clear whether this was due to abiotic
                      or biotic processes, the form of inorganic N applied or the
                      result of applying an easily decomposable substrate. We
                      investigated this by adding glucose and 200 mg kg−1 soil
                      as (NH4)2SO4-N or KNO3-N to sterilized and unsterilized
                      soil. The changes in inorganic and ninhydrin N, microbial
                      biomass C and production of CO2 were then monitored. Between
                      the time of applying N and extraction with 0.5 M K2SO4,
                      i.e., after ca 2 h, approximately 110 mg NH4+-N kg−1 dry
                      soil could not be accounted for in the unsterilized and
                      sterilized soil and that remained so for the entire
                      incubation in the sterilized soil. After 1 day this
                      increased to 140 mg NH4+-N kg−1 dry soil in the
                      unsterilized control and 170 mg NH4+-N kg−1 dry soil in C
                      amended soil. Volatilization of NH3 accounted for 56 mg
                      NH4+-N kg−1 so the rest appeared to be adsorbed on the
                      soil matrix. The NH3 volatilization and NH4+ fixed in the
                      soil matrix remained constant over time and no oxidation to
                      NO2− or NO3 − had occurred, so unaccounted N in
                      unsterilized soil was probably incorporated into the
                      microbial biomass in excess of what was required for
                      metabolic activity. The unaccounted N was ca 70 mg
                      NO3−–N in nitrate amended soil after 3 days and 138
                      NO3−–N when glucose was additionally added. Losses
                      through abiotic processes were absent as inferred from
                      changes in sterilized soil and the aerobic incubation
                      inhibited possible losses through denitrification. It was
                      inferred that NO3− that could not be accounted for was
                      taken up by micro-organisms in excess of what was required
                      for metabolic activity.},
      cin          = {IBG-2},
      ddc          = {570},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {582 - Plant Science (POF3-582)},
      pid          = {G:(DE-HGF)POF3-582},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000185919100014},
      doi          = {10.1023/A:1026182211065},
      url          = {https://juser.fz-juelich.de/record/811407},
}