Prevention of groundwater contamination by agricultural
chemicals requires an understanding of the complex
processes that control pesticide movement below the soil
surface. Through this understanding it is possible to try
to predict which areas may be most vulnerable to
contamination. The many models that have been developed to
characterize pesticide movement vary widely in their
conceptual approach and degree of complexity. A soil
properties model was developed in this thesis to determine
the relative overall pesticide movement potential in
Oregon agricultural soils. Its focus is ease of use in
both acquisition of input values and running of the model.
The model is based on soil properties important in
controlling pesticide movement. It is a rating system
model that uses scoring of factors and matrices to weigh
the soil values. It is organized into two processes:
leaching and sorption. The leaching potential is based on
soil permeability and drainage class. The sorption
potential is based on organic matter content and texture
of the soil surface horizon(s). The interaction of these
two processes results in the overall pesticide movement
potential. / Graduation date: 1991
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/37639 |
| Date | 09 July 1990 |
| Creators | Vogue, Margaret A. |
| Contributors | Warkentin, Benno |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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