1993 Proceedings: Contents1. Herbicide Movement in Soils Under No-Till and Reduced Till Treatments (final report) 2. Laboratory Verification of a Sampling Protocol Using Teflon® Bailers for Sampling Shallow, Large-Diameter Wells for Agricultural Chemicals (final report) 3. Seasonal Variations in Preferential Flow Under Corn and Soybean Cropping (final report) 4. Agricultural Policy Tools to Protect Water Quality in Corn Belt Watersheds (progress report) 5. Modeling Transport of Agricultural Chemicals in a Dual-Porosity System Resulting from Macropores (progress report) 6. 50 Ways Farmers Can Protect Their Goundwater (final report) 7. Agricultural Practices for Water Quality Improvement (progress report) 8. Year-to-Year Changes in Pesticide Use and the Economics of Corn and Soybean Production (final report) 9. Research on the Bulk Saturated Hydraulic Conductivity of Surficial Materials: Guelph Permeameter Tests and Numeric Methods (final report) 10. Facilitated Transport of Agricultural Chemicals by Colloidal Materials (final report) 11. Movement of Atrazine and Metabolites in a Small Watershed (final report) 12. Spatial and Temporal Variability of Herbicide Retention in Soil During the Growing Season (final report) 13. Agricultural Chemical Contamination of Shallow Bored and Dug Wells (progress report) 14. Changing the Conservation Behavior of Farmers and Conservation Compliance: Implications for Strategic Planning and Policy Implementation (progress report) 15. Characterizing the Variability and Movement of Mineral Nitrogen in Soil (progress report) 16. Grassed Detention Buffer Strips for Reducing Agricultural NPS Pollution from Tile Drainage Systems (progress report) 17. Influence of Soil Oxidation State on the Behavior of Agricultural Chemicals (progress report) 18. Policy Alternatives to Reduce Agricultural Chemicals in Public Water Supplies (progress report) 19. Fate and Transport of Atrazine in Surficial Materials at Agrichemical Facilities (progress report) 20. Mapping of Karst Areas in Illinois (progress report) 21. Cross Studies and Comparisons of Methodologies Involving the Measurement of Atrazine and Other Herbicides (special study report) 22. An Inter-Laboratory Comparison of Soil and Water Pesticide Analyses (special study report)
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