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@ARTICLE{Cao:908265,
      author       = {Cao, Xinyue and Reichel, Rüdiger and Wissel, Holger and
                      Kummer, Sirgit and Brüggemann, Nicolas},
      title        = {{H}igh {C}arbon {A}mendments {I}ncrease {N}itrogen
                      {R}etention in {S}oil {A}fter {S}lurry {A}pplication—an
                      {I}ncubation {S}tudy with {S}ilty {L}oam {S}oil},
      journal      = {Journal of soil science and plant nutrition},
      volume       = {22},
      number       = {2},
      issn         = {0717-635X},
      address      = {[Cham]},
      publisher    = {Springer International Publishing},
      reportid     = {FZJ-2022-02499},
      pages        = {1277 - 1289},
      year         = {2022},
      abstract     = {Excess nitrogen (N) after animal slurry application is a
                      persistent problem of intensive agriculture, with
                      consequences such as environmental pollution by ammonia
                      (NH3) and nitrous oxide (N2O) emissions and nitrate (NO3−)
                      leaching. High-carbon organic soil amendments (HCAs) with a
                      large C:N ratio have shown the potential of mitigating
                      unintended N losses from soil. To reduce gaseous and
                      leaching N losses after the application of slurry, a
                      laboratory incubation study was conducted with silt loam
                      soil. We tested the potential of three different types of
                      HCA—wheat straw, sawdust, and leonardite (application rate
                      50 g C L−1 slurry for each of the three HCAs)—to
                      mitigate N loss after amendment of soil with pig and cattle
                      slurry using two common application modes (slurry and HCA
                      mixed overnight with subsequent addition to soil vs.
                      sequential addition) at an application rate equivalent to 80
                      kg N ha−1. Compared to the control with only soil and
                      slurry, the addition of leonardite reduced the NH3 emissions
                      of both slurries by $32–64\%.$ Leonardite also reduced the
                      total N2O emissions by $33–58\%.$ Wheat straw reduced N2O
                      emissions by $40–46\%,$ but had no effect on NH3 emission.
                      15 N labeling showed that the application of leonardite was
                      associated with the highest N retention in soil $(24\%$
                      average slurry N recovery), followed by wheat straw $(20\%$
                      average slurry N recovery). The mitigation of N loss was
                      also observed for sawdust, although the effect was less
                      consistent compared with leonardite and wheat straw. Mixing
                      the slurry and HCA overnight tended to reduce N losses,
                      although the effect was not consistent across all
                      treatments. In conclusion, leonardite improved soil N
                      retention more effectively than wheat straw and sawdust.},
      cin          = {IBG-3},
      ddc          = {570},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {2173 - Agro-biogeosystems: controls, feedbacks and impact
                      (POF4-217)},
      pid          = {G:(DE-HGF)POF4-2173},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000734712900001},
      doi          = {10.1007/s42729-021-00730-7},
      url          = {https://juser.fz-juelich.de/record/908265},
}