Glufosinate

§ 180.473 Glufosinate; tolerances for residues. (a) General. (1) Tolerances are established for residues of glufosinate, including its metabolites and degradates, in or on the commodities in table 1 to paragraph (a)(1). Compliance with the tolerance levels specified in table 1 to paragraph (a)(1) is to be determined by measuring the sum of glufosinate (2-amino-4-(hydroxymethylphosphinyl)butanoic acid) and its metabolites, 2-(acetylamino)-4-(hydroxymethyl phosphinyl) butanoic acid, and 3-(hydroxymethylphosphinyl) propanoic acid, expressed as 2-amino-4-(hydroxymethylphosphinyl)butanoic acid equivalents. Table 1 to Paragraph ( a )(1) Commodity Parts per million Almond, hulls 0.50 Banana 1 0.30 Beet, sugar, molasses 5.0 Beet, sugar, roots 0.9 Beet, sugar, tops (leaves) 1.5 Bushberry subgroup 13-07B 0.15 Canola, meal 1.1 Cattle, fat 0.40 Cattle, meat 0.15 Cattle, meat byproducts 6.0 Corn, field forage 4.0 Corn, field, grain 0.20 Corn, field, stover 6.0 Corn, sweet, forage 1.5 Corn, sweet, kernels plus cob with husks removed 0.30 Corn, sweet, stover 6.0 Cotton, gin byproducts 30 Cottonseed subgroup 20C 15 Egg 0.15 Fig, dried 0.15 Fruit, citrus, group 10-10 0.15 Fruit, pome, group 11-10 0.25 Fruit, small, vine climbing, except fuzzy kiwifruit, subgroup 13-07F 0.05 Fruit, stone, group 12-12 0.30 Goat, fat 0.40 Goat, meat 0.15 Goat, meat byproducts 6.0 Grain aspirated fractions 25 Hog, fat 0.40 Hog, meat 0.15 Hog, meat byproducts 6.0 Hop, dried cones 0.9 Horse, fat 0.40 Horse, meat 0.15 Horse, meat byproducts 6.0 Melon subgroup 9A 0.08 Milk 0.15 Nut, tree, group 14-12 0.50 Pepper/eggplant subgroup 8-10B 0.15 Potato, chips 1.6 Potato granules/flakes 2.0 Poultry, fat 0.15 Poultry, meat 0.15 Poultry, meat byproducts 0.60 Rapeseed subgroup 20A 0.4 Rice, grain 1.0 Rice, hull 2.0 Sheep, fat 0.40 Sheep, meat 0.15 Sheep, meat byproducts 6.0 Soybean 2.0 Soybean, hulls 10 Squash/cucumber subgroup 9B 0.15 Tomato, paste 0.15 Tomato subgroup 8-10A 0.1 Tropical and subtropical, medium to large fruit, edible peel, subgroup 23B 0.1 Tropical and subtropical, medium to large fruit, smooth, inedible peel, subgroup 24B 0.2 Tropical and subtropical, small fruit, edible peel, subgroup 23A 0.5 Tropical and subtropical, small fruit, inedible peel, subgroup 24A 0.1 Vegetable, tuberous and corm, subgroup 1C 0.8 (2) Tolerances are established for residues of glufosinate-P, including its metabolites and degradates, in or on the commodities in table 2 to paragraph (a)(2), as a result of applications of glufosinate-P or glufosinate-P-ammonium to those commodities. Compliance with the tolerance levels specified in table 2 to paragraph (a)(2) is to be determined by measuring the sum of glufosinate (2-amino-4-(hydroxymethylphosphinyl) butanoic acid) and its metabolites, 2-(acetylamino)-4-(hydroxymethyl phosphinyl) butanoic acid, and 3-(hydroxymethylphosphinyl) propanoic acid, expressed as 2-amino-4-(hydroxymethylphosphinyl)butanoic acid equivalents. Table 2 to Paragraph ( a )(2) Commodity Parts per million Canola, meal 1.1 Cattle, fat 0.4 Cattle, meat 0.15 Cattle, meat byproducts 6 Corn, field, forage 4 Corn, field, grain 0.2 Corn, field, stover 6 Corn, sweet, forage 1.5 Corn, sweet, kernels plus cob with husks removed 0.3 Corn, sweet, stover 6 Cotton, gin byproducts 30 Cottonseed, subgroup 20C 15 Egg 0.15 Goat, fat 0.4 Goat, meat 0.15 Goat, meat byproducts 6 Grain, aspirated fractions 25 Hog, fat 0.4 Hog, meat 0.15 Hog, meat byproducts 6 Horse, fat 0.4 Horse, meat 0.15 Horse, meat byproducts 6 Milk 0.15 Poultry, fat 0.15 Poultry, meat 0.15 Poultry, meat byproducts 0.6 Rapeseed, subgroup 20A 0.4 Sheep, fat 0.4 Sheep, meat 0.15 Sheep, meat byproducts 6 Soybean 2 Soybean, hulls 10 (b) [Reserved] (c) Tolerances with regional registrations. Tolerances with regional registrations are established for residues of glufosinate, including its metabolites and degradates, in or on the commodities in table 3 to paragraph (c). Compliance with the tolerance levels specified in table 3 to paragraph (c) is to be determined by measuring the sum of glufosinate, (2-amino-4-(hydroxymethylphosphinyl)butanoic acid) and its metabolites, 2-(acetylamino)-4-(hydroxymethyl phosphinyl) butanoic acid, and 3-(hydroxymethylphosphinyl) propanoic acid, expressed as 2-amino-4-(hydroxymethylphosphinyl)butanoic acid equivalents. Table 3 to Paragraph ( c ) Commodity Parts per million Grass, forage 0.15 Grass, hay 0.2 (d) Indirect or inadvertent residues. (1) Tolerances are established for indirect or inadvertent residues of glufosinate, including its metabolites and degradates, in or on the commodities in table 4 to paragraph (d)(1), as a result of the application of glufosinate to crops listed in paragraph (a) of this section. Compliance with the tolerance levels specified in table 4 to paragraph (d)(1) is to be determined by measuring the sum of glufosinate (2-amino-4-(hydroxymethylphosphinyl) butanoic acid) and its metabolite, 3-(hydroxymethylphosphinyl) propanoic acid, expressed as 2-amino-4-(hydroxymethylphosphinyl)butanoic acid equivalents. Table 4 to Paragraph ( d )(1) Commodity Parts per million Barley, hay 0.40 Barley, straw 0.40 Buckwheat, fodder 0.40 Buckwheat, forage 0.40 Oat, forage 0.40 Oat, hay 0.40 Oat, straw 0.40 Rye, forage 0.40 Rye, straw 0.40 Teosinte 0.40 Triticale 0.40 Wheat, forage 0.40 Wheat, hay 0.40 Wheat, straw 0.40 (2) Tolerances are established for indirect or inadvertent residues of glufosinate-P, including its metabolites and degradates, in or on the commodities in table 5 to paragraph (d)(2), as a result of the application of glufosinate-P or glufosinate-P-ammonium to crops listed in paragraph (a)(2) of this section. Compliance with the tolerance levels specified in table 5 to paragraph (d)(2) is to be determined by measuring the sum of glufosinate (2-amino-4-(hydroxymethylphosphinyl) butanoic acid) and its metabolite, 3-(hydroxymethylphosphinyl) propanoic acid, expressed as 2-amino-4-(hydroxymethylphosphinyl)butanoic acid equivalents.” Table 5 to Paragraph ( d )(2) Commodity Parts per million Barley, hay 0.4 Barley, straw 0.4 Buckwheat, fodder 0.4 Buckwheat, forage 0.4 Oat, forage 0.4 Oat, hay 0.4 Oat, straw 0.4 Rye, forage 0.4 Rye, straw 0.4 Teosinte 0.4 Triticale 0.4 Wheat, forage 0.4 Wheat, hay 0.4 Wheat, straw 0.4 [68 FR 55849, Sept. 29, 2003, as amended at 71 FR 25945, May 3, 2006; 72 FR 72625, Dec. 21, 2007; 76 FR 23497, Apr. 27, 2011; 77 FR 59113, Sept. 26, 2012; 80 FR 72599, Nov. 20, 2015; 84 FR 21708, May 15, 2019; 87 FR 57626, Sept. 21, 2022; 88 FR 39780, June 20, 2023; 89 FR 85865, Oct. 29, 2024]