(a) General. (1) Tolerances are established for residues of the herbicide bromoxynil, including its metabolites and degradates, in or on the commodities in the table below. Compliance with the tolerance levels is to be determined by measuring only bromoxynil, 3,5-dibromo-4-hydroxybenzonitrile, resulting from application of its octanoic and/or heptanoic acid ester, in or on the commodities.

CommodityParts per million
Alfalfa, forage0.1
Alfalfa, hay0.5
Barley, grain0.05
Barley, hay9.0
Barley, straw4.0
Corn, field, forage0.3
Corn, field, grain0.05
Corn, field, stover0.2
Corn, pop, grain0.05
Corn, pop, stover0.2
Flax, seed0.1
Garlic0.1
Grain, aspirated fractions1.2
Grass, forage18
Grass, hay5.0
Oat, forage0.3
Oat, grain0.05
Oat, hay9.0
Oat, straw4.0
Onion, bulb0.1
Peppermint, hay0.1
Rye, forage1.0
Rye, grain0.05
Rye, straw2.0
Sorghum, grain, forage0.8
Sorghum, grain, grain0.2
Sorghum, grain, stover0.2
Spearmint, hay0.1
Wheat, forage1.0
Wheat, grain0.05
Wheat, hay4.0
Wheat, straw2.0

(2) Tolerances are established for residues of the herbicide bromoxynil, 3,5-dibromo-4-hydroxybenzonitrile, including its metabolites and degradates, in or on the commodities in the table below. Compliance with the tolerance levels is to be determined by measuring only bromoxynil and its metabolite, 3,5-dibromo-4-hydroxybenzoic acid (DBHA), resulting from application of its octanoic and/or heptanoic acid ester, in or on the commodities.

CommodityParts per million
Cattle, fat1
Cattle, meat byproducts3.5
Cattle, meat0.5
Cotton, gin byproducts7.0
Cotton, hulls5.0
Cotton, undelinted seed1.5
Egg0.05
Goat, fat1
Goat, meat byproducts3.5
Goat, meat0.5
Hog, fat1
Hog, meat byproducts3.5
Hog, meat0.5
Horse, fat1
Horse, meat byproducts3.5
Horse, meat0.5
Milk0.4
Poultry, fat0.05
Poultry, meat byproducts0.3
Poultry, meat0.05
Sheep, fat1
Sheep, meat byproducts3.5
Sheep, meat0.5

(b) Section 18 emergency exemptions. [Reserved]

(c) Tolerances with regional registrations. [Reserved]

(d) Indirect or inadvertent residues. [Reserved]

[62 FR 33023, June 18, 1997, as amended at 63 FR 26480, May 13, 1998; 66 FR 47402, Sept. 12, 2001; 70 FR 7046, Feb. 10, 2005; 72 FR 35666, June 29, 2007; 72 FR 41930, Aug. 1, 2007; 76 FR 31491, June 1, 2011]