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Prnum Pesticide(MFG) Commodity (Crop Group) Category (Code) EPA Status 13368 M GLUFOSINATE BASF,UPL NA BROCCOLI (05-16 = BRASSICA HEAD AND STEM VEGETABLE GROUP ) 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 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 (13454), BROCCOLI, CABBAGE (13369) AND MUSTARD GREENS (13370) Comments: GA DATA IS AVAILABLE FOR BROCOLLI AND COLLARD FROM 2019 AND 2020; 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 20-AZ-DMP RECD 5289.pdf GLUFOSINATE APPLIED BROADCAST TO SOIL AT 0.4 OR 0.8 LB AI/A PRIOR TO TRANSPLANTING BROCCOLI. NO CROP INJURY SEEN OUT TO 46 DAYS AFTER APPLICATION. Pena, Marco 23-AZ-DMP RECD 5664.pdf As part of a multi-crop screening trial, Rely herbicide was applied broadcast 14, 7, or 3 days preplant at 43 or 87 fl oz/a (0.79 or 1.59 lb ai/a) to transplanted ‘Castle Dome’ broccoli 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 transplanted ‘Diplomat’ broccoli in a muck soil. Glufosinate caused no crop injury, stand reduction or yield reduction. 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 transplanting ‘Emerald Crown’ broccoli in a 90% sand soil. No stand loss and no significant injury (≤ 5%) or reduction in crop vigor (≤ 0.5%) from glufosinate, regardless of rate or timing. Culpepper, A. Stanley 21-GA-DMP RECD 5719.pdf 04/24 Rely applied preplant broadcast at 32, 64 or 128 fl oz/a (0.59, 1.17 or 2.34 lb ai/a) three or 7 days prior to transplanting ‘Emerald Crown’ broccoli in a 90% sand soil. Other treatments included tank-mixes of the two low rates with Roundup Powermax (glyphosate) at 32 or 64 fl oz/a (1.38 or 2.75 lb ai/a). Glufosinate alone caused ≤ 3% injury, regardless of application rate or timing. No treatment impacted broccoli stand, early-season biomass, or yield. Culpepper, A. Stanley 21-GA-DMP RECD 5720.pdf 04/24 Rely applied preplant broadcast at 32, 64 or 96 fl oz/a (0.59, 1.17 or 1.76 lb ai/a) immediately prior to transplanting ‘Emerald Crown’ broccoli in a loamy sand soil. Other treatments included Roundup Powermax II (glyphosate) at 32, 64 or 96 fl oz/a (1.38, 2.75 or 4.13 lb ai/a) and tank-mixes of the low, middle and high rates of each. Glufosinate alone caused ≤ 5% injury, regardless of rate, and did not impact crop development or yield.