Biogeosciences
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Articles | Volume 23, issue 19
Articles | Volume 23, issue 19
https://doi.org/10.5194/bg-23-7151-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-7151-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 19
Research article
 | 
12 Oct 2026
Research article |  | 12 Oct 2026

What matters when? Temporal development of drivers and sources of nitrous oxide emissions in winter wheat

Fabio Turco, Iris Feigenwinter, Lorenz Allemann, Lukas Hörtnagl, Frank Liebisch, and Nina Buchmann

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Short summary
Fertilized cropland is a major source of nitrous oxide, but when and why it is emitted within a season is still poorly known. We measured it continuously above a Swiss winter wheat field for a year. Emissions exceeded those typical for wheat, and machine learning showed they peaked during crop establishment and early spring, when wet soil and large amounts of nitrogen met low plant uptake. Vigorous growth lowered emissions, so matching nitrogen supply to plant demand is a promising lever.
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