| Reduced Risk Status: |
THIS AI HAS BEEN CLASSIFIED AS RR FOR ONE OR MORE FOOD USES.
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| IPM Compatibility: |
Per Requester: IPM Fit Unknown with N/A for explanation of the fit; UNKNOWN: : SOR
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| Reasons for need: |
Broadleaf weeds, specifically: amaranth sp., false ragweed, kochia, marestail, volunteer beans/peas; Currently sesame has few preemergent options, and all are labeled for 30-45 days preplant which does not work well in most systems. Mesotrione provides a preemerge option that can be applied close to or after planting and provides a new andw unique mode of action:08/23
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| Requesting State(s): |
AR:Smith, H ; NC:Post, A ; OK:Luper, C ; TX:De La Fuente, G* ;
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| PCR Use Pattern: |
Make one preplant or preemergence application at 1 to 6 fl oz/a to control troublesome broadleaf weeds; future efficacy and crop response trials should look at pre-plant applications as well (7 to 14 days).
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| EPA Default Residue Trials: |
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| IR-4 Residue Trial Plan: |
Any 4 (processing)
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| Residue Protocol Use Pattern: |
USE THE CALLISTO HERBICIDE PRODUCT (4 LB AI/GAL OF MESOTRIONE ACTIVE INGREDIENT); MAKE 1 SOIL BROADCAST APPLIC OF 0.188 LB AI/A IN 10-60 GPA, WITHIN 48 HRS AFTER PLANTING, FOLLOWED BY AT LEAST 0.5 IN OF IRRIGATION OR RAINFALL AFTER AND WITHIN 7 DAYS OF EMERGENCE; IN THE TRIAL FOR PROCESSING SAMPLES, INCLUDE A 2X RATE OF 0.376 LB AI/A, WITH THE SAME APPLIC AND POST-APPLIC DIRECTIONS; ALL APPLIC SHALL INCLUDE A LABEL RATE OF AN ADJUVANT
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| Efficacy/Crop Safety (E/CS) Data Required: |
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| E/CS Research Comments: |
PER THE 2024 PERFORMANCE PROTOCOL: TESTING MESOTRIONE TO SUPPORT REGISTRATION ON SESAME; ALL SITES WILL USE THE VARIETY 'S2431' PROVIDED BY SESACO; TEST 5 RATES OF CALLISTO (0.0625, 0.094, 0.125, 0.19, 0.25 LB AI/A) ALL APPLIED IN 10-60 GPA, USING 2 DIFFERENT TIMINGS (PREPLANT BROADCAST 7-10 DAYS BEFORE SEEDING, AND PREEMERGENCE BROADCAST AFTER SEEDING THE CROP BUT BEFORE CROP EMERGENCE); SEE PROTOCOL FOR MORE APPLIC REQUIREMENTS; EVALUATE CROP INJURY AND CROP YIELD; WEED CONTROL DATA ARE OPTIONAL
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| Label Use Pattern Submitted To EPA: |
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| EPA PIF Status: |
Green 12/23
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| EPA Status: |
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| EPA PRIA Date: |
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| MRID: |
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| Comments: |
Per PCR, Japan is an export market:02/24/sb; Per requester, currently registered preplant herbicides require long preplant intervals and mesotrione applied just prior to or immediately after seeding will be more useful:08/23; Mfg supports as "Researchable, Residue and E/CS data needed", and future efficacy and crop response trials should look at pre-plant applications as well (7 to 14 days).:08/23/sb; EPA Green 12/23; E/CS ongoing, status will be changed to "Residue ongoing, E/CS ongoing" once residue protocol is signed 02/24/DRS; Res ongoing ECS ongoing 03/24/DRS; The Residue protocol is in the process of being cancelled, and the status will be updated once the amendment process is finalized:06/24/sb; Performance work completed. status changed to "Complete w ongoing trials" 03/25/ds
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| International Status: |
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| Archive Location: |
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| QA Archive: |
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