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Good Agricultural Practices (GAPs)

Good Agricultural Practices (GAPs). Module 4 Soil Fumigant RED Requirements. What are GAPs?. Application Practices that: Improve safety & efficacy May be generic or specific to application method, chemical Developed by registrants, growers, applicators, and EPA Many already on labels

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Good Agricultural Practices (GAPs)

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  1. Good Agricultural Practices(GAPs) Module 4 Soil Fumigant RED Requirements

  2. What are GAPs? • Application Practices that: • Improve safety & efficacy • May be generic or specific to application method, chemical • Developed by registrants, growers, applicators, and EPA • Many already on labels • Must document in Fumigant Management Plan and/or Post Application Summary to show compliance Module 4: Good Agricultural Practices

  3. Why have GAPs? • Ensure that all applicators follow the same standards • Reduce potential for: • bystander & handler exposure to emissions from soil fumigants • accidents • Improve efficacy of soil fumigation Module 4: Good Agricultural Practices

  4. Label Statements “The following GAPs must be followed during all fumigant applications.” “All measurements and documentation to ensure the mandatory GAPs are achieved must be recorded in the FMP and/or the post-application summary.” Module 4: Good Agricultural Practices

  5. Examples of Generic GAPs Soil moisture • Appropriate for soil type • Determined using USDA’s Feel and Appearance method or an instrument Soil preparation • good tilth • free of large clods • crop residue (if present) must not interfere with soil seal Photos courtesy of USDA NRCS

  6. Another Example of a Generic GAP Soil temperature • Maximum soil temperature is 90 degrees F • Depth of soil temperature measurement varies

  7. Example of Application Method-Specific GAP Tree Replant • Before Application • Remove • Tree stump • Primary root system • Backfill the hole with soil • After Application • Cover with soil and tamp, or • Compact soil

  8. Example of Chemical-Specific GAP Methyl Bromide • Hot gas outdoor applications • Introduce fumigant from outside application block • Tarps must be used • Fumigant delivery tubes must be under tarps • Fittings, connections, and valves must be checked for leaks Module 4: Good Agricultural Practices

  9. Other GAPs • Soil seal • Calibrate, maintain, and clean equipment • Prevent end-row spillage Module 4: Good Agricultural Practices

  10. Review Questions True or False? GAPs… 1. …were developed solely by EPA. 2. …will be mandatory on new labels. 3. …must be recorded only in the Fumigant Management Plan. 4. …are identical for all soil fumigants. Module 4: Good Agricultural Practices

  11. Summary Good Agricultural Practices: • Minimize exposure from emissions • Increase safety and efficacy of applications • May be generic, or specific to a chemical or application method • Many on labels as recommendations, more will be mandatory • Must be documented in FMPs and/or post-application summaries Module 4: Good Agricultural Practices

  12. EPA Contact Information • Leader: • John Leahy (703) 305-6703 • Team Leaders: • Steven Weiss (703) 308-8293 • Cathryn O’Connell (703) 308-0136 • Chemical Review Managers: • Methyl bromide: Susan Bartow (703) 603-0065 • Metam sodium: Dana Friedman (703) 347-8827 and Jose Gayoso (703) 347-8652 • Dazomet: Dana Friedman (703) 347-8827 • 1,3-D & Chloropicrin: Andrea Carone (703) 308-0122 E-mail: lastname.firstname@epa.gov www.epa.gov/oppsrrd1/reregistration/soil_fumigants Module 4: Good Agricultural Practices

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