| Reduced Risk Status: |
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| IPM Compatibility: |
Per requester: Very Good Fit; Amicarbazone can serve as an alternative to atrazine. Amicarbazone can be used at lower rates than atrazine and achieve same results while providing a good weed control selectivity (Dayan et al. 2009). Amicarbazone has lower soil persistence than atrazine and can allow for more diverse crop rotations (Mueller and Henry 2024). Environmental toxicity and effects are potentially less detrimental than atrazine. Dayan, F. E., Trindade, M. L., & Velini, E. D. (2009). Amicarbazone, a new photosystem II inhibitor. Weed Science, 57(6), 579-583. Mueller, T. C., & Henry, R. S. (2024). Amicarbazone and other Group 5 herbicide behavior in soil under field and laboratory conditions. Weed Technology, 38, e63. Korshun, M., Mart?ianova, Y., & Korshun, O. (2021). Ecotoxicological hazard assessment of triazolone herbicide amicarbasone:04/25;
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| Reasons for need: |
WEEDS; pigweeds, lambsquarter, crabgrass Alternative to atrazine. Alternative to atrazine can potentially reduce the negative environmental effects of atrazine use:04/25;
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| Requesting State(s): |
OR:Becerra-Alvarez, A* ;
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| PCR Use Pattern: |
Make up to two broadcast applications of amicarbazone 70 WDG preplant or preemergence to sweet corn. If two applications are made, applications should not exceed 5.0 oz/a and should be ~14 days apart, with the second application made prior to sweet corn emergence. If one application is made, do not exceed 10.25 oz/a per year. Regardless of the number of applications, do not exceed 10.25 oz/a per year.
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| EPA Default Residue Trials: |
1-2 2 3 5-5 10 11 12
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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: |
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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: |
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| MRID: |
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| Comments: |
DMP "ony" XH177 converted to PR# 13936 with request received 04/25. Key Export Markets: Canada, Mexico, Japan, South Korea, EU, Phillipines, Taiwan, Guatemala, Saudi Arabia, Australia. No UPL solo amicarbazone products are currently marketed for food crops in the US:04/25; Status changed from "Under Eval" to "Researchable, Residue & ECS" 05/25/ds
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