Application timing as a mitigation tool for pesticide leaching to drains in northwest Europe
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Application timing as a mitigation tool for pesticide leaching to drains in northwest Europe. / Holbak, M.; Vuaille, J.; Diamantopoulos, E.; Styczen, M. E.; Petersen, C. T.; Strobel, B. W.; Abrahamsen, P.
In: Journal of Hydrology: Regional Studies, Vol. 53, 101734, 2024.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Application timing as a mitigation tool for pesticide leaching to drains in northwest Europe
AU - Holbak, M.
AU - Vuaille, J.
AU - Diamantopoulos, E.
AU - Styczen, M. E.
AU - Petersen, C. T.
AU - Strobel, B. W.
AU - Abrahamsen, P.
N1 - Publisher Copyright: © 2024 The Authors
PY - 2024
Y1 - 2024
N2 - Study region: Artificially drained agricultural land in northwest Europe. Study focus: The use of application timing as a mitigation tool for pesticide leaching to drains was investigated by simulating pesticide fate after application every day in a pesticide-specific application window, using the agro-hydrological model DAISY. The simulations were carried out for six combinations of pesticide-crop-seasons using three synthetically generated climate series and 800 soil profiles. The simulated drain concentrations were transformed to normalized pesticide concentrations in a hypothetical adjacent stream. Each application day was then characterized by the maximum normalized hourly pesticide concentration in the stream, expressed as the maximum hourly toxic unit (mTU), occurring within 300 days after application. New hydrological insights for the region: The result showed that if the pesticide was applied consistently every year at the best application day, pesticide leaching, in terms of the 90th percentile of mTU, could be reduced by up to 62% compared to a random application. If the pesticide application day was restricted to vary in a five-day period, the 90th percentile of mTU could be reduced by up to 21%. Thus, our study shows that there is a significant mitigation potential for reducing pesticide leaching to drains by tailoring the timing of pesticide application to weather conditions.
AB - Study region: Artificially drained agricultural land in northwest Europe. Study focus: The use of application timing as a mitigation tool for pesticide leaching to drains was investigated by simulating pesticide fate after application every day in a pesticide-specific application window, using the agro-hydrological model DAISY. The simulations were carried out for six combinations of pesticide-crop-seasons using three synthetically generated climate series and 800 soil profiles. The simulated drain concentrations were transformed to normalized pesticide concentrations in a hypothetical adjacent stream. Each application day was then characterized by the maximum normalized hourly pesticide concentration in the stream, expressed as the maximum hourly toxic unit (mTU), occurring within 300 days after application. New hydrological insights for the region: The result showed that if the pesticide was applied consistently every year at the best application day, pesticide leaching, in terms of the 90th percentile of mTU, could be reduced by up to 62% compared to a random application. If the pesticide application day was restricted to vary in a five-day period, the 90th percentile of mTU could be reduced by up to 21%. Thus, our study shows that there is a significant mitigation potential for reducing pesticide leaching to drains by tailoring the timing of pesticide application to weather conditions.
KW - Application time
KW - Drains
KW - Mitigation
KW - Modelling
KW - Pesticide leaching
U2 - 10.1016/j.ejrh.2024.101734
DO - 10.1016/j.ejrh.2024.101734
M3 - Journal article
AN - SCOPUS:85188240551
VL - 53
JO - Journal of Hydrology: Regional Studies
JF - Journal of Hydrology: Regional Studies
SN - 2214-5818
M1 - 101734
ER -
ID: 389914189