Closing maize yield gaps in sub-Saharan Africa will boost soil N2O emissions
In sub-Saharan Africa (SSA), the most important staple crop is maize; the production of which is dominated by smallholder farming systems using low external inputs (<10 kg N ha−1) resulting in low crop yields and large yield gaps (difference between actual and potential yields). To assess increases...
| Autores principales: | , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2020
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/121164 |
| _version_ | 1855529115477606400 |
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| author | Leitner, Sonja Pelster, David E. Werner, Christian R. Merbold, Lutz Baggs, Elizabeth M. Mapanda, Farai Butterbach-Bahl, Klaus |
| author_browse | Baggs, Elizabeth M. Butterbach-Bahl, Klaus Leitner, Sonja Mapanda, Farai Merbold, Lutz Pelster, David E. Werner, Christian R. |
| author_facet | Leitner, Sonja Pelster, David E. Werner, Christian R. Merbold, Lutz Baggs, Elizabeth M. Mapanda, Farai Butterbach-Bahl, Klaus |
| author_sort | Leitner, Sonja |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | In sub-Saharan Africa (SSA), the most important staple crop is maize; the production of which is dominated by smallholder farming systems using low external inputs (<10 kg N ha−1) resulting in low crop yields and large yield gaps (difference between actual and potential yields). To assess increases in soil N2O emissions when closing maize yield gaps by increased fertilizer use, we reviewed the literature, developed a relationship between yield gaps and soil N2O emissions, and used it to scale across SSA. According to our analysis, N2O emissions from maize production will increase from currently 255 to 1755 ± 226 Gg N2O-N year−1 (+589%) if existing maize yield gaps are closed by 75%, increasing total anthropogenic N2O emissions for SSA by c. 50%. |
| format | Journal Article |
| id | CGSpace121164 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1211642025-09-25T13:01:42Z Closing maize yield gaps in sub-Saharan Africa will boost soil N2O emissions Leitner, Sonja Pelster, David E. Werner, Christian R. Merbold, Lutz Baggs, Elizabeth M. Mapanda, Farai Butterbach-Bahl, Klaus soil maize nitrous oxide gas emissions In sub-Saharan Africa (SSA), the most important staple crop is maize; the production of which is dominated by smallholder farming systems using low external inputs (<10 kg N ha−1) resulting in low crop yields and large yield gaps (difference between actual and potential yields). To assess increases in soil N2O emissions when closing maize yield gaps by increased fertilizer use, we reviewed the literature, developed a relationship between yield gaps and soil N2O emissions, and used it to scale across SSA. According to our analysis, N2O emissions from maize production will increase from currently 255 to 1755 ± 226 Gg N2O-N year−1 (+589%) if existing maize yield gaps are closed by 75%, increasing total anthropogenic N2O emissions for SSA by c. 50%. 2020-12 2022-09-08T09:59:57Z 2022-09-08T09:59:57Z Journal Article https://hdl.handle.net/10568/121164 en Open Access Elsevier Leitner, S., Pelster, D.E., Werner, C., Merbold, L., Baggs, E.M., Mapanda, F. and Butterbach-Bahl, K. 2020. Closing maize yield gaps in sub-Saharan Africa will boost soil N2O emissions. Current Opinion in Environmental Sustainability 47:95-105. |
| spellingShingle | soil maize nitrous oxide gas emissions Leitner, Sonja Pelster, David E. Werner, Christian R. Merbold, Lutz Baggs, Elizabeth M. Mapanda, Farai Butterbach-Bahl, Klaus Closing maize yield gaps in sub-Saharan Africa will boost soil N2O emissions |
| title | Closing maize yield gaps in sub-Saharan Africa will boost soil N2O emissions |
| title_full | Closing maize yield gaps in sub-Saharan Africa will boost soil N2O emissions |
| title_fullStr | Closing maize yield gaps in sub-Saharan Africa will boost soil N2O emissions |
| title_full_unstemmed | Closing maize yield gaps in sub-Saharan Africa will boost soil N2O emissions |
| title_short | Closing maize yield gaps in sub-Saharan Africa will boost soil N2O emissions |
| title_sort | closing maize yield gaps in sub saharan africa will boost soil n2o emissions |
| topic | soil maize nitrous oxide gas emissions |
| url | https://hdl.handle.net/10568/121164 |
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