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@ARTICLE{Atakora:866409,
      author       = {Atakora, Williams K. and Kwakye, Peter K. and Weymann,
                      Daniel and Brüggemann, Nicolas},
      title        = {{S}timulus of nitrogen fertilizers and soil characteristics
                      on maize yield and nitrous oxide emission from {F}erric
                      {L}uvisol in the {G}uinea {S}avanna agro-ecological zone of
                      {G}hana},
      journal      = {Scientific African},
      volume       = {6},
      issn         = {2468-2276},
      address      = {[Amsterdam]},
      publisher    = {Elsevier B.V.},
      reportid     = {FZJ-2019-05562},
      pages        = {e00141 -},
      year         = {2019},
      abstract     = {Farmers in Ghana rely on different forms of fertilizers to
                      increase crop yields. The quantity of applied mineral N
                      fertilizer is lost through nitrification and denitrification
                      in the form of the powerful greenhouse gas nitrous oxide
                      (N2O) has not been determined in the field until now. This
                      study was conducted on a Ferric Luvisol in the Tolon
                      District in Northern Ghana to determine the influence of
                      nitrogen fertilizers, soil moisture and soil temperature on
                      N2O emissions and grain yield. Three different nitrogenous
                      fertilizers, i.e. ammonia sulfate (AS), urea (U) and NPK
                      60–40–40, were applied at either 60 or 120 kg N ha−1
                      yr−1 to maize, termed AS 60, AS 120, U 60, U 120 and NPK
                      60–40–40 thereafter. A control was left without N
                      application. The results showed that N fertilizer type and
                      quantities applied affected N2O emissions significantly.
                      Plots of NPK 60–40–40, AS 60 and U 60 emitted 1.22, 1.45
                      and 1.79 kg N2ON ha−1, respectively, throughout the
                      sampling period and were not considerably higher than N2O
                      emissions from the control plots, which amounted to
                      0.32 kg N2ON ha−1. In contrast, the N2O emissions of U
                      120 and AS 120 were significantly higher than the controls,
                      with values of 4.29 and 3.49 kg N2ON ha−1, respectively.
                      When N2O flux was related to grain yield, 1.24 and 1.04 g
                      N2O kg−1 grain was emitted from AS 120 and U 120,
                      respectively. Plots treated with NPK 60–40–40, AS 60 and
                      U 60 produced 0.39, 0.47 and 0.55 g N2O kg−1 grain,
                      respectively, whereas plots without fertilization emitted
                      0.53 g N2O kg−1 grain. Average N-induced N2O emission
                      factors ranged between $0.10\%$ and $0.22\%,$ with an
                      overall emission factor of $0.15\%.$},
      cin          = {IBG-3},
      ddc          = {600},
      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           = {WOS:000658439500067},
      doi          = {10.1016/j.sciaf.2019.e00141},
      url          = {https://juser.fz-juelich.de/record/866409},
}