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Prnum Pesticide(MFG) Commodity (Crop Group) Category (Code) EPA Status 13140 M S-METOLACHLOR/METOLACHLOR SYNGEN,UPL NA INTERMEDIATE WHEATGRASS (15-16 = CEREAL GRAINS AND CEREAL GRAINS FORAGE/FODDER/STRAW GROUPS) POTENTIAL: E/CS DATA BEFORE APPROVAL FOR RESIDUE STUDY (02) Reasons for need: GRASSY WEEDS; GRASSY WEEDS CAN BE PROBLEMATIC DURING ESTABLISHMENT; ONCE THE CROP HAS EMERGED, THERE ARE ALMOST NO POST-EMERGENCE GRASS CONTROL OPTIONS; PER WY ME-TOO REQUEST: THIS REQUESTED USE IS ESSENTIAL TO ESTABLISHING PERENNIAL WHEATGRASS STANDS AND PREVENTING TOTAL LOSS OF GRAIN/SEED PRODUCTION IN THE ESTABLISHMENT YEAR Efficacy/Crop Safety (E/CS) Data Required: E/CS Research Comments: Comments: NO KEY EXPORT MARKET NOTED; THERE IS NO WHEAT OR BARLEY TOLERANCE FOR EXTRAPOLATION TO WHEATGRASS; THE DUAL MAGNUM LABEL ONLY MENTIONS WHEAT, BARLEY, OATS AND RYE AS ROTATIONAL CROPS WITH A 4.5 MONTH PLANTBACK INTERVAL:08/20; SYNG SUPPORTS, CROP SAFETY DATA NEEDED BEFORE APPROVAL FOR RESIDUE WORK (CONCERNS THAT S-MOC WILL KILL WHEATGRASS):09/20 Field Res.Dir (FRD) Field ID# Field Data Track# Raw Data Data to MFG Performance Results & Comments Wyse, Donald L. 17-MN-DMP RECD 4931.pdf DUAL II MAGNUM AT 1.5 OR 3 PT/A PRE; LITTLE TO NO CROP EFFECT