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Potential Water Quality Impacts of Fungicide Applications in Indiana

Overview. Introduction to water quality risk assessment approachPreliminary resultsPreliminary conclusions. NAPRA. National Agricultural Pesticide Risk Analysis (NAPRA) Uses GLEAMSDesigned to assess risk of pesticide loss to ground or surface water as a result of various crop-tillage-management practicesExtended by ABE Purdue Web interface and databases Assess nutrient risk .

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Potential Water Quality Impacts of Fungicide Applications in Indiana

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    1. Potential Water Quality Impacts of Fungicide Applications in Indiana Bernie Engel, Professor and Head Agricultural and Biological Engineering Purdue University Email: engelb@purdue.edu Phone: 765.494.1162

    2. Overview Introduction to water quality risk assessment approach Preliminary results Preliminary conclusions

    4. NAPRA National Agricultural Pesticide Risk Analysis (NAPRA) Uses GLEAMS Designed to assess risk of pesticide loss to ground or surface water as a result of various crop-tillage-management practices Extended by ABE Purdue Web interface and databases Assess nutrient risk

    8. e-DSS prototype for hydrologic/water quality analysis

    9. Predicted Acetochlor Concentration in Runoff for Crop Land in the White River Basin

    12. Preliminary Results Azoxystrobin Humans – Runoff concentration below health based level of concern (HAL) Fish - Runoff concentration below lowest observable effects concentration (LOEC) Chlorothalonil Humans - Runoff concentration from 2% of Indiana area exceeds HAL 5% of years Fish – Potential concern

    13. Chlorothalonil – Fish LOEC

    14. Preliminary Results Myclobutanil Humans – Runoff concentration below HAL Fish - Runoff concentration below LOEC Propiconazole Humans – Potential concern Fish - Runoff concentration below LOEC

    15. Propiconazole – Human HAL

    16. Preliminary Results Pyraclostrobin Humans – Runoff concentration below HAL Fish – Runoff concentration from 99% of Indiana area exceeds LOEC 50%, 25%, 10% and 5% of years Tebuconazole Humans – Runoff concentration below HAL Fish - Runoff concentration below LOEC

    17. Preliminary Results Tetraconazole Humans – Runoff concentration from 100% of Indiana area exceeds HAL 50%, 25%, 10% and 5% of years Fish - Runoff concentration below LOEC Trifloxystrobin Humans – Runoff concentration below HAL Fish - Runoff concentration below LOEC

    18. Preliminary Conclusions Potential water quality concerns Human health Chlorothalonil – minor Propiconazole Tetraconazole Fish Chlorothalonil Pyraclostrobin How do we address these concerns?

    19. Potential Water Quality Impacts of Fungicide Applications in Indiana Bernie Engel, Professor and Head Agricultural and Biological Engineering Purdue University Email: engelb@purdue.edu Phone: 765.494.1162

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