40 CFR 180.473 - Glufosinate; tolerances for residues.

View all text of Subpart C [§ 180.101 - § 180.726]

§ 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]