| Reduced Risk Status: |
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| IPM Compatibility: |
PER REQUESTER: VERY GOOD IPM FIT; THIS IS A VERY GOOD FIT AS 2,4-D IS LABELLED IN FRESH POTATO PRODUCTION AND HAS BEEN SUCCESSFULLY USED FROM MANY YEARS TO ENHANCE RED-SKIN COLOR. IT IS NOT EXPECTED TO BE A HAZARD TO BENEFICIALS. IT CAN REDUCE OVER-RELIANCE OF METRIBUZIN AND RIMSULFURON FOR POSTEMERGENCE WEED CONTROL IN WHITE CHIPPING POTATOES:08/20
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| Reasons for need: |
BROAD-LEAF WEEDS; THERE ARE NOT ANY GOOD CONTROL OPTIONS FOR LARGE-SEEDED BROAD LEAF WEEDS, ESPECIALLY POSTEMERGENCE; THE ONLY PRODUCT ALLOWED FOR POSTEMERGENCE WEED CONTROL IN WHITE (CHIPPING POTATOES) IS RIMSULFURON; SOIL CARRYOVER OF RIMSULFURON PREVENTS SOME CROP FROM BEING PLANTED THE NEXT YEAR; 2,4-D USE IN FRESH POTATOES HAS BEEN SHOWN TO SUPPRESS WEED AND NOT LIMIT YIELD OR CAUSE CARRYOVER; THERE IS NO DATA ON RESIDUES OF 2,4-D AFTER THE CHIP FRYING PROCESS; PER MN ME-TOO REQUEST: THE NORTHERN PLAINS POTATO GROWERS ASSOC. STRONGLY SUPPORTS THIS PROJECT REQUEST
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| Requesting State(s): |
MN:Johnson, D ; ND:Robinson, A* ;
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| PCR Use Pattern: |
USE THE WEEDONE LV4 PRODUCT; MAKE A MAXIMUM 2 POST, FOLIAR, APPLIC OF 0.07 LB AE/A, 2-25 GPA USING GROUND OR AERIAL EQUIPMENT; 10-14 DAY INTERVAL, 45-DAY PHI; APPLY WHEN POTATOES ARE IN THE PRE-BUD STAGE AND ARE 7-10" TALL, AND APPLY WHEN WEEDS ARE SMALL (2" OR LESS) TO PROVIDE SUPPRESSION OF SUSCEPTIBLE BROADLEAVES; CROP RESPONSE MAY VARY BASED ON VARIETY, FERTILITY AND STRESS FACTORS SUCH AS DISEASE AND INSECT PRESSURE
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| EPA Default Residue Trials: |
1-2 2 3 5-4 9 10 11-6
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| IR-4 Residue Trial Plan: |
1-2 2 3 5-4 9 10 11-6
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| Residue Protocol Use Pattern: |
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| Efficacy/Crop Safety (E/CS) Data Required: |
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| E/CS Research Comments: |
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| Label Use Pattern Submitted To EPA: |
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| EPA PIF Status: |
EPA YELLOW (08/21), 08/22; EPA GREEN: 08/23
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| EPA Status: |
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| EPA PRIA Date: |
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| MRID: |
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| Comments: |
KEY EXPORT MARKETS NOTED INCLUDE CANADA AND ASIA PACIFIC RIM COUNTRIES; THE WEEDONE LV4 LABEL ALLOWS FOR POST USE IN RED SKIN VARIETIES (FOR SKIN COLOR ENHANCEMENT, SUPPORTED BY IR-4 RESIDUE WORK [PR# 04302], AND REGISTERED IN 2012); THIS REQUEST IS ASKING FOR A USE IN POTATOES OTHER THAN RED SKIN VARIETIES AND IS ASKING FOR THE USE TO BE LISTED FOR WEED CONTROL; IR-4 ALSO CONDUCTED A RESIDUE STUDY FOR A 2,4-D REQUEST AS A WEED CONTROL AGENT, PR# 01029; THE USE PATTERN IN THAT STUDY (FINAL REPORT SIGNED IN 2004) COVERS THE PATTERN IN THIS NEW REQUEST, ALONG WITH A PREPLANT BURNDOWN APPLIC; THAT STUDY ALSO INCLUDED DATA ON PROCESSED FRACTIONS (FLAKES, WET PEELS AND FRIED CHIPS) AND IS INDICATED AS REGISTERED:07/20; THIS REQUEST LIKELY REQUIRES ONLY A LABEL AMENDMENT, WHICH IS A MFG ACTION:08/20; CANADA HAS INTEREST IN THIS REQUESTED USE, AND MAY HAVE SOME USEFUL DATA:10/20; CORTEVA WILL NOT SUPPORT THIS USE:07/21; EPA CAUTION: 08/21; CAN USE CANDIAN DATA BUT NEED MORE RESIDUE TRIALS; PROCESSING STUDY IS AVAILABLE: 04/22; EPA CAUTION: 08/22; TASK FORCE MEETING IN OCT, 2022 TO MAKE A FINAL DECISION; EPA GREEN: 08/23
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| International Status: |
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| Archive Location: |
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| QA Archive: |
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