| Reduced Risk Status: |
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| IPM Compatibility: |
Copied from PR# 13936: 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 & 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: |
Copied from PR# 13936: 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): |
HQ:IR-4 Headquarters* ; NC:Jennings, K ; OR:Becerra-Alvarez, Rendon, D ;
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| PCR Use Pattern: |
Use the Intrava DX product. Make one broadcast preemergence application, after seeding but before crop emergence, at 20 fl oz/a or two broadcast applications at 10 fl oz/a, approximately 14 days apart, with the second application made preemergence.
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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: |
1-2 2 3 5-5 10 11 12, 1 decline
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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: |
13936/Amicarbazone only, YELLOW:08/25;
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| EPA Status: |
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| EPA PRIA Date: |
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| MRID: |
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| Comments: |
This PR# was created since UPL has requested IR-4 use Amicarbazone + Metribuzin since the solo Amicarbazone product is no longer commercially sold by the registrant, so we will conduct the Priority A study here, instead of under PR# 13936 (DMP for Amicarbazone only), using the Intrava DX product, and keeping the same status of Researchable, Res & E/CS Data Needed. The lab analysis will only be conducted on Amicarbazone due to the low rate of Metribuzin in the formulation. Copied from PR# 13936: Key Export Markets: Canada, Mexico, Japan, South Korea, EU, Phillipines, Taiwan, Guatemala, Saudi Arabia, Australia. Amicarbazone, and EPA CAUTION 08/25, and 2 OR & 1 NC SSRs copied from 13936 to here:01/26/sb;
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| International Status: |
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| Archive Location: |
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| QA Archive: |
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