Articles | Volume 22, issue 5
https://doi.org/10.5194/hess-22-2937-2018
https://doi.org/10.5194/hess-22-2937-2018
Research article
 | 
17 May 2018
Research article |  | 17 May 2018

Impact of capillary rise and recirculation on simulated crop yields

Joop Kroes, Iwan Supit, Jos van Dam, Paul van Walsum, and Martin Mulder

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Short summary
Impact of upward flow by capillary rise and recirculation on crop yields is often neglected or underestimated. Case studies and model experiments are used to illustrate the impact of this upward flow in the Dutch delta. Neglecting upward flow results in yield reductions for grassland, maize and potatoes. Half of the withheld water behind these yield effects comes from recirculated percolation water as occurs in free-drainage conditions; the other half from increased upward capillary rise.