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PR#PriorityPesticide(MFG)Commodity (Crop Group)Project Status
13134 B 2,4-D ( DOWAGR,LOVLND,NUFARM ) POTATO ( 01C = TUBEROUS AND CORM VEGETABLES SUBGROUP ) UNDER EVALUATION

Reduced Risk Status:
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
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
Requesting State(s): MN:Johnson, D ; ND:Robinson, A* ;
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
EPA Default Residue Trials: 1-2 2 3 5-4 9 10 11-6
IR-4 Residue Trial Plan: 1-2 2 3 5-4 9 10 11-6
Residue Protocol Use Pattern:
Efficacy/Crop Safety (E/CS) Data Required:
E/CS Research Comments:
Label Use Pattern Submitted To EPA:
EPA PIF Status: EPA YELLOW (08/21)
EPA Status:
EPA PRIA Date:
MRID:
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;
International Status:
Archive Location:
QA Archive:

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View Performance/Crop Safety Data

Field Research DirectorExpediteField ID#RFCTO QAHQ RECD.Lab ID#Lab RECDLab CompProc. IDProc. ShippedProc. ReportRaw DataS Dir./Auditor
Robinson, Andrew P P 16-ND-DMP RECD -NONE
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