Analytical modelling of pesticide transport from the soil surface to a drinking water well

A model for the coupled unsaturated/saturated soil system was developed, based on analytical solutions for each zone. The model was used to identify the processes and parameters with the greatest impact on the fraction of applied pesticide reaching a drinking-water well. For representative sandy soi...

Full description

Saved in:

Bibliographic Details
Published in:	Journal of hydrology (Amsterdam) Vol. 169; no. 1
Main Authors:	Beltman, W.H.J, Boesten, J.J.T.I, Zee, S.E.A.T.M., van der
Format:	Journal Article
Published:	1995
Subjects:	bodem Bodemfysica computer simulation computersimulatie gewasbescherming leaching pesticiden pesticides plant protection simulatie simulatiemodellen simulation simulation models soil Soil Physics uitspoelen water pollution water resources water supply waterverontreiniging watervoorraden watervoorziening
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	A model for the coupled unsaturated/saturated soil system was developed, based on analytical solutions for each zone. The model was used to identify the processes and parameters with the greatest impact on the fraction of applied pesticide reaching a drinking-water well. For representative sandy soils under average Dutch rainfall conditions, processes in the unsaturated zone had a much greater impact on pesticide arrival in the wells than processes in the saturated zone. Protection zones reduced pesticide transport to wells substantially if their half-life was much smaller than the characteristic travel time of the pesticide in the aquifer.
ISSN:	0022-1694 1879-2707