Simulating pesticide transport via preferential flow: A current perspective

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Publication details

Title of host publicationHUMAN AND ENVIRONMENTAL EXPOSURE TO XENOBIOTICS
DatePublished - 1999
Pages73-82
Number of pages10
PublisherLA GOLIARDICA PAVESE
Place of Publication27100 PAVIA
EditorsAAM DelRe, C Brown, E Capri, G Errera, SP Evans, M Trevisan
Original languageEnglish
ISBN (Print)88-7830-299-6

Abstract

Preferential flow is often an important process for pesticide transport through a wide range of soils. Accurate simulation of preferential flow is thus a prerequisite for correct description of the behaviour of pesticides in soil under a. variety of conditions. The role of preferential flow modelling in regulatory risk assessment is less clear because of misgivings over the accuracy and robustness of models. Even so, a number of authorities are requesting the use of preferential flow models on a routine basis to assess the risk of contamination of ground and surface waters. It is thus important to consider the benefits and constraints on use of preferential flow models. This paper assesses the current state-of-the-art by bringing together a number of studies to: evaluate the predictive ability of preferential now models; understand and compare descriptions of key processes; and undertake sensitivity and uncertainty analyses. A series of priorities for future research are proposed.

    Research areas

  • model, preferential flow, pesticide, evaluation, sensitivity analysis, HEAVY CLAY SOIL, SURFACE WATERS, MODEL, MOVEMENT

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