Behaviour of pesticides in topsoil and subsoil in relation to possible contamination of groundwater

J.J.T.I. Boesten; L.J.T. van der Pas; J.H. Smelt; M. Leistra

Behaviour of pesticides in topsoil and subsoil in relation to possible contamination of groundwater

J.J.T.I. Boesten, L.J.T. van der Pas, J.H. Smelt, M. Leistra

Research output: Chapter in Book/Report/Conference proceeding › Chapter › Academic

Abstract

The PESTLA model is among the most sophisticated models that are now used for assessing pesticide leaching in a registration procedure. The calculated percentage leached is almost pathologically sensitive to a few sorption and tranformation parametersat leaching levels relevant in the registration. A theory was developed to calculate the influence of spatial variability in sorption and transformation parameters with simple analytical expressions. The model tended to overestimate the rate of transportof sorbing pesticides in a field study. Studies on the transformation rate of a few pesticides in water-saturated subsoil materials indicate that such rates may be significant to assessing leaching to deep groundwater.

Original language	Undefined/Unknown
Title of host publication	Soil structure and transport processes; implications for water, gases, nutrients, pesticides, and contaminants in soils
Editors	P.A.C. Raats, H. Rogaar, A.H. van den Heuvel-Pieper
Pages	83-93
Publication status	Published - 1996

Cite this

Boesten, J. J. T. I., van der Pas, L. J. T., Smelt, J. H., & Leistra, M. (1996). Behaviour of pesticides in topsoil and subsoil in relation to possible contamination of groundwater. In P. A. C. Raats, H. Rogaar, & A. H. van den Heuvel-Pieper (Eds.), Soil structure and transport processes; implications for water, gases, nutrients, pesticides, and contaminants in soils (pp. 83-93)

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title = "Behaviour of pesticides in topsoil and subsoil in relation to possible contamination of groundwater",

abstract = "The PESTLA model is among the most sophisticated models that are now used for assessing pesticide leaching in a registration procedure. The calculated percentage leached is almost pathologically sensitive to a few sorption and tranformation parametersat leaching levels relevant in the registration. A theory was developed to calculate the influence of spatial variability in sorption and transformation parameters with simple analytical expressions. The model tended to overestimate the rate of transportof sorbing pesticides in a field study. Studies on the transformation rate of a few pesticides in water-saturated subsoil materials indicate that such rates may be significant to assessing leaching to deep groundwater.",

author = "J.J.T.I. Boesten and \{van der Pas\}, L.J.T. and J.H. Smelt and M. Leistra",

note = "Wageningen, Neth. integr. Soil Res. Programme, 1996. Neth. integr. Soil Res. Programme Rep. 6",

year = "1996",

language = "Undefined/Unknown",

pages = "83--93",

editor = "P.A.C. Raats and H. Rogaar and \{van den Heuvel-Pieper\}, A.H.",

booktitle = "Soil structure and transport processes; implications for water, gases, nutrients, pesticides, and contaminants in soils",

}

Behaviour of pesticides in topsoil and subsoil in relation to possible contamination of groundwater. / Boesten, J.J.T.I.; van der Pas, L.J.T.; Smelt, J.H. et al.
Soil structure and transport processes; implications for water, gases, nutrients, pesticides, and contaminants in soils. ed. / P.A.C. Raats; H. Rogaar; A.H. van den Heuvel-Pieper. 1996. p. 83-93.

Research output: Chapter in Book/Report/Conference proceeding › Chapter › Academic

TY - CHAP

T1 - Behaviour of pesticides in topsoil and subsoil in relation to possible contamination of groundwater

AU - Boesten, J.J.T.I.

AU - van der Pas, L.J.T.

AU - Smelt, J.H.

AU - Leistra, M.

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PY - 1996

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N2 - The PESTLA model is among the most sophisticated models that are now used for assessing pesticide leaching in a registration procedure. The calculated percentage leached is almost pathologically sensitive to a few sorption and tranformation parametersat leaching levels relevant in the registration. A theory was developed to calculate the influence of spatial variability in sorption and transformation parameters with simple analytical expressions. The model tended to overestimate the rate of transportof sorbing pesticides in a field study. Studies on the transformation rate of a few pesticides in water-saturated subsoil materials indicate that such rates may be significant to assessing leaching to deep groundwater.

AB - The PESTLA model is among the most sophisticated models that are now used for assessing pesticide leaching in a registration procedure. The calculated percentage leached is almost pathologically sensitive to a few sorption and tranformation parametersat leaching levels relevant in the registration. A theory was developed to calculate the influence of spatial variability in sorption and transformation parameters with simple analytical expressions. The model tended to overestimate the rate of transportof sorbing pesticides in a field study. Studies on the transformation rate of a few pesticides in water-saturated subsoil materials indicate that such rates may be significant to assessing leaching to deep groundwater.

M3 - Chapter

SP - 83

EP - 93

BT - Soil structure and transport processes; implications for water, gases, nutrients, pesticides, and contaminants in soils

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A2 - Rogaar, H.

A2 - van den Heuvel-Pieper, A.H.

ER -