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(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.
| 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.
| 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.
| 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.
| 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.”
| 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; 87 FR 57626, Sept. 21, 2022; 88 FR 39780, June. 20, 2023; 89 FR 85865, Oct. 29, 2024]