Evaluation Of The PRZM2 Model For Transport
Of Metamitron In Undisturbed Soil Monoliths
Author(s)
J. Alvarez, J. Guirao, A. Herguedas & J. Atienza
Abstract
The predictive capability of the PRZM-2 model for the herbicide Metamitron under our
agricultural conditions was investigated. Model predictions were compared with data on
percolation and herbicide concentration collected in undisturbed soil monoliths during 1995 in
Valladolid (Spain). Soil temperature, evapotranspiration, percolation and net pesticide flux past
the maximum root depth were used to evaluate the model response. The results suggests that
the hydrologic components of the model are relatively accurate, but percolation was
overpredicted in months where evapotranspiration was high. Our special experimental
conditions are assumed to be the responsible for this overprediction during the summer
months. Despite of this overpredict
Keywords
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