Submit a PCR

Prnum Pesticide(MFG) Commodity (Crop Group) Category (Code) EPA Status 14039 M S-METOLACHLOR/METOLACHLOR SYNGEN,UPL NA MINT (25AB = HERB FRESH AND DRIED LEAVES SUBGROUP) POTENTIAL: E/CS DATA BEFORE APPROVAL FOR RESIDUE STUDY (02) Reasons for need: Summer annual weeds. Lack of herbicide or other weed management options after cutting/harvesting mint:07/25; Efficacy/Crop Safety (E/CS) Data Required: Syngenta would like to see at least 1, 1.33, and 2 pt/A tested to be able to assess phytotoxicity at increased product rates:07/25; E/CS Research Comments: Comments: New PR# converted from XH670. This is an export commodity. Syngenta supports as Potential: E/CS Data Before Approval for Residue, and will support pursuing this use only through 24(c) (state) registrations:07/25; EPA CAUTION:08/25; Field Res.Dir (FRD) Field ID# Field Data Track# Raw Data Data to MFG Performance Results & Comments Meyers, Stephen L (NCR) 23-IN-DMP RECD 5721.pdf 03/24 Dual Magnum applied post-cut at 16 fl oz/a (0.95 lb ai/a) to peppermint growing in a loamy sand. Crop injury ranged from 2 to 16% throughout the trial and was 16% at 10 weeks after treatment. Crop height reductions from s-metolachlor were not different from the weed-free check. Mint biomass not different from untreated. Light weed pressure in trial resulted in low weed counts in herbicide treatments. Meyers, Stephen L (NCR) 23-IN-DMP RECD 5721.pdf 03/24 Dual Magnum applied post-cut at 16 fl oz/a (0.95 lb ai/a) to peppermint growing in a sandy loam. Slight crop injury (≤ 7%) through 4 weeks after treatment (WAT) but increased to 19% at 8 WAT and was 6% at 12 WAT. No significant crop height reductions seen. Mint biomass was not different from untreated. Light weed pressure in trial resulted in low weed counts in herbicide treatments.