Progress in simulating macropore flow through soil

C D Brown, S Beulke, I G Dubus

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

Abstract

The development of macropore flow models over the last 5-10 years is an important advance which improves our ability to simulate the fate of pesticides in soil. A number of regulatory authorities are requesting the use of macropore flow models on a routine basis to assess the risk of contamination of ground and surface waters by pesticides. MACRO is the preferred macropore flow model for regulatory use and its predictive ability is reasonable for a range of intermediate soils but very variable for heavy clays. There are still significant problems with selection of input parameters which raise questions over the predictive use of such models for regulatory purposes. These problems must be considered in the light of similar issues for non-macropore flow models.

Original languageEnglish
Title of host publicationBCPC CONFERENCE PROCEEDINGS
Subtitle of host publicationPESTS & DISEASES 2000
Place of PublicationFARNHAM
PublisherBRITISH CROP PROTECTION COUNCIL
Pages85-90
Number of pages6
Volume1-3
ISBN (Print)1-901396-57-6
Publication statusPublished - 2000

Keywords

  • HEAVY CLAY SOIL
  • SURFACE WATERS
  • TRANSPORT
  • MOVEMENT
  • MODEL
  • PESTICIDES

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