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Transport in Porous Media

, Volume 76, Issue 3, pp 431–448 | Cite as

2-D Simulation of Non-Isothermal Fate and Transport of a Drip-Applied Fumigant in Plastic-Mulched Soil Beds. II. Sensitivity Analysis and Model Application

  • Wonsook HaEmail author
  • Craig D. Stanley
  • Robert S. Mansell
  • Husein A. Ajwa
Article

Abstract

Temperature dependence of selected parameters was defined and illustrated. The order of sensitivity among tested model parameters (sorption coefficient, K D; diffusion coefficient, D g; vapor pressure, P; degradation rate, k; Henry’s constant, H) was k > P > K D > H > D g for 1-day simulations and k > P and K D > D g > H for 2-day simulations. The most sensitive parameter for both days was k. Mass balance errors were calculated using NRMSE (normalized root mean square error) to evaluate the level of agreement. The numerical model was applied to predict fumigant movement in the soil bed.

Keywords

Sensitivity analysis Numerical model Non-isothermal pesticide transport Temperature dependence Methyl isothiocyanate (MITC) 

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Wonsook Ha
    • 1
    Email author
  • Craig D. Stanley
    • 2
  • Robert S. Mansell
    • 3
  • Husein A. Ajwa
    • 4
  1. 1.USDA-ARS, US Salinity LaboratoryRiversideUSA
  2. 2.University of Florida-Gulf Coast Research and Education CenterWimaumaUSA
  3. 3.Department of Soil and Water ScienceUniversity of FloridaGainesvilleUSA
  4. 4.Department of Plant SciencesUniversity of California-DavisSalinasUSA

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