Wheel track loosening can reduce the risk of pesticide leaching to surface waters
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Wheel track loosening can reduce the risk of pesticide leaching to surface waters. / Vuaille, Jeanne; Daraghmeh, Omar; Abrahamsen, Per; Jensen, Signe M.; Nielsen, Soren Kirkegaard; Munkholm, Lars J.; Green, Ole; Petersen, Carsten T.
In: Soil Use and Management, Vol. 37, No. 4, 2021, p. 906-920.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Wheel track loosening can reduce the risk of pesticide leaching to surface waters
AU - Vuaille, Jeanne
AU - Daraghmeh, Omar
AU - Abrahamsen, Per
AU - Jensen, Signe M.
AU - Nielsen, Soren Kirkegaard
AU - Munkholm, Lars J.
AU - Green, Ole
AU - Petersen, Carsten T.
PY - 2021
Y1 - 2021
N2 - Wheel tracks can lower topsoil infiltrability and increase water ponding in agricultural fields. A seedbed harrow mounted with two goosefeet tine points, the eradicators, was used to investigate track loosening at different depths on a sandy loam soil as a way of mitigating compaction effects and reducing the risk of pesticide transport to surface waters. Loosening strongly affected air permeability and steady-state infiltration. The agro-ecological system model Daisy was used to simulate the effects of soil structural and hydraulic changes on pesticide leaching to subsurface drain lines over a 332-year period. Measured properties of the topsoil were combined with a representative subsoil and weather series and with realistic management scenarios. The loads of pesticide in the drains for 3 months after loosening were calculated for each year, and the risk was defined as the 90th percentile of the load. We focused on three different herbicides used in sugar beet cultivation in spring: glyphosate, metamitron and phenmedipham. Our simulations showed that for all pesticides loosening could lower the risk by 10% on average for a 3-m working width, and the tracks contribution to the risk by 34%, for all drain spacing and working width settings. Wheeling did not affect the risk but this result was sensitive to the parameterization of the hydraulic conductivity in the compacted soil layer, showing potentially higher risk under certain conditions. These results showed that wheel track loosening is an effective strategy for reducing the risk of surface water contamination from pesticides used in agriculture.
AB - Wheel tracks can lower topsoil infiltrability and increase water ponding in agricultural fields. A seedbed harrow mounted with two goosefeet tine points, the eradicators, was used to investigate track loosening at different depths on a sandy loam soil as a way of mitigating compaction effects and reducing the risk of pesticide transport to surface waters. Loosening strongly affected air permeability and steady-state infiltration. The agro-ecological system model Daisy was used to simulate the effects of soil structural and hydraulic changes on pesticide leaching to subsurface drain lines over a 332-year period. Measured properties of the topsoil were combined with a representative subsoil and weather series and with realistic management scenarios. The loads of pesticide in the drains for 3 months after loosening were calculated for each year, and the risk was defined as the 90th percentile of the load. We focused on three different herbicides used in sugar beet cultivation in spring: glyphosate, metamitron and phenmedipham. Our simulations showed that for all pesticides loosening could lower the risk by 10% on average for a 3-m working width, and the tracks contribution to the risk by 34%, for all drain spacing and working width settings. Wheeling did not affect the risk but this result was sensitive to the parameterization of the hydraulic conductivity in the compacted soil layer, showing potentially higher risk under certain conditions. These results showed that wheel track loosening is an effective strategy for reducing the risk of surface water contamination from pesticides used in agriculture.
KW - compaction
KW - drainage
KW - leaching
KW - pesticides
KW - pollution
KW - tillage
KW - SATURATED HYDRAULIC CONDUCTIVITY
KW - SUBSURFACE TILE DRAINS
KW - CLAY LOAM SOIL
KW - WEATHER GENERATOR
KW - FIELD DRAINS
KW - TRANSPORT
KW - TILLAGE
KW - INFILTRATION
KW - NITRATE
KW - RUNOFF
U2 - 10.1111/sum.12641
DO - 10.1111/sum.12641
M3 - Journal article
VL - 37
SP - 906
EP - 920
JO - Soil Use and Management
JF - Soil Use and Management
SN - 0266-0032
IS - 4
ER -
ID: 249865918