Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 29, issue 22
Articles | Volume 29, issue 22
https://doi.org/10.5194/hess-29-6703-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-29-6703-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 29, issue 22
Technical note
 | 
25 Nov 2025
Technical note |  | 25 Nov 2025

Technical note: Extending the SWAT2012 and SWAT+ models to simulate pesticide plant uptake processes

Hendrik Rathjens, Jens Kiesel, Jeffrey Arnold, Gerald Reinken, and Robin Sur

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Latest update: 10 Nov 2026
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Short summary
We improved the widely used SWAT (Soil and Water Assessment Tool) model to better predict how pesticides move through the environment. We added a new process that considers how plants take-up chemicals from the soil. Testing this updated model in two catchments showed very good prediction capabilities and a reduction of chemicals in river water by up to 17 % due to the plant uptake. The enhanced model offers a valuable tool for assessing the environmental impacts of agricultural management.
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