| Reduced Risk Status: |
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| IPM Compatibility: |
Per Requester: Good Fit; This use fits well in asparagus IPM because it would provide an additional tool during a critical harvest window, help manage resistant pigweed populations, and reduce reliance on repeated use of the same herbicide chemistries:06/26;
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| Reasons for need: |
Annual broadleaf weeds, especially pigweed species. Primary: Pigweed species, including redroot pigweed and Powell amaranth. Pre-harvest weed control options in asparagus are very limited. Most growers rely on ALS inhibitors, microtubule inhibitors, and PSII inhibitors, but resistance to ALS- and PSII-inhibiting herbicides is widespread in pigweed species in the region. During harvest, many preemergence herbicides begin to break down, allowing pigweed and other broadleaf weeds to emerge. These escapes can interfere with harvest, reduce spear quality and marketability, and increase weed seed return to the field. Current technologies used: Growers currently rely on ALS inhibitors, microtubule inhibitors, and PSII inhibitors for pre-harvest weed control, along with limited POST options during harvest. These programs often break down during harvest, and ALS- and PSII-resistant pigweed populations make control of escapes difficult:06/26; MA:more preemergent herbicide options in asparagus will allow for more effective rotations to prevent herbicide resistance:09/26;
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| Requesting State(s): |
MA:Gannett, M ; MI:Miranda, J* ;
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| PCR Use Pattern: |
Use Antorix once at 5 fl oz/A before the first spear harvest prior to weed emergence or when weeds are in the early seedling stage.
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| EPA Default Residue Trials: |
2 5-2 10-3 11-2
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| IR-4 Residue Trial Plan: |
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| Residue Protocol Use Pattern: |
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| Efficacy/Crop Safety (E/CS) Data Required: |
BASF requires at least 3 efficacy and crop safety trials using the formulated product Antorix used at the proposed preemergence use pattern with application before (but as close to with short interval) spear emergence with one application at 5.5 fl oz/A and at exaggerated rates. Trials should be conducted in prominent asparagus growing areas and the impact on the spear emergence and then fern formation during the remainder of the current year should be observed as well as crop response the following year:09/26/sb;
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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: |
Both Green:08/26;
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| EPA Status: |
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| EPA PRIA Date: |
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| MRID: |
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| Comments: |
BASF supports as Researchable, Res & E/CS:09/26/sb;
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| International Status: |
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| Archive Location: |
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| QA Archive: |
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