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Prnum Pesticide(MFG) Commodity (Crop Group) Category (Code) EPA Status 13454 M GLUFOSINATE BASF,UPL NA LETTUCE (HEAD & LEAF) (04-16A = LEAFY GREENS SUBGROUP) POTENTIAL: E/CS DATA BEFORE APPROVAL FOR RESIDUE STUDY (02) Reasons for need: IT IS THE ONLY ALTERNATIVE TO GLYPHOSATE FOR BROAD SPECTRUM WEED CONTROL WITH LITTLE SOIL RESIDUAL; NY/Provides broad spectrum control ahead of planting for the broad spectrum control of emerged weeds:08/23 Efficacy/Crop Safety (E/CS) Data Required: E/CS Research Comments: SEE PR 13453 (SPINACH) FOR PERFORMANCE DATA, FROM THE 2023 PERFORMANCE PROTOCOL TESTING EFFECT OF PREPLANT BURNDOWN USE OF GLUFOSINATE (RELY) ON SPINACH, LETTUCE, BROCCOLI (13368), CABBAGE (13369) AND MUSTARD GREENS (13370) Comments: EPA GREEN 08/22 Field Res.Dir (FRD) Field ID# Field Data Track# Raw Data Data to MFG Performance Results & Comments Pena, Marco 20-AZ-DMP RECD 5288.pdf LIBERTY APPLIED BROADCAST TO CLAY SOIL AT 42 FL OZ/A (0.77 LB AI/A) ONE DAY PRIOR TO PLANTING. NO CROP INJURY OBSERVED 23 DAYS AFTER PLANTING. Pena, Marco 23-AZ-DMP RECD 5664.pdf As part of a multi-crop screening trial, Rely herbicide was applied broadcast 28, 21, or 17 days preplant at 43 or 87 fl oz/a (0.79 or 1.59 lb ai/a) to seeded lettuce in a clay soil. Glufosinate caused no crop injury, stand reduction or yield reduction. Robinson, Allison 23-OH-DMP RECD 5685.pdf As part of a multi-crop screening trial, Rely herbicide was applied broadcast 14, 6, or 3 days preplant at 43 or 87 fl oz/a (0.79 or 1.59 lb ai/a) to seeded ‘Buttercrunch’ lettuce in a muck soil. Glufosinate caused no crop injury, stand reduction or yield reduction. Wang, Zheng 23-CA-DMP RECD 5693.pdf 02/24 As part of a multi-crop screening trial, Rely herbicide was applied broadcast 14, 7, or 4 days preplant at 43 or 87 fl oz/a (0.79 or 1.59 lb ai/a) to lettuce seeded in a Handford fine sandy loam. With the exception of both rates applied 14 days before seeding (20 and 23% stand loss), all treatments caused significant stand loss, up to 44%. Pooled across both rates and all application timings, foliar injury was >35% at 22 days after planting (DAP) and reached more than 50% at 49 DAP. Culpepper, A. Stanley 23-GA-DMP RECD 5716.pdf 04/24 Rely applied preplant broadcast at 43 or 87 fl oz/a (0.79 or 1.59 lb ai/a) three, 7, or 14 days prior to seeding ‘Glendana’ lettuce in a loamy sand soil. No injury, stand loss, or reduction in crop vigor from glufosinate, regardless of rate or timing.