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21 U.S.C. 321(q), 346a and 371.
36 FR 22540, Nov. 25, 1971, unless otherwise noted.
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Nomenclature changes to part 180 appear at 62 FR 66023, Dec. 17, 1997.
Nomenclature changes to subpart C of part 180 appear at 67 FR 41803, June 19, 2002; 67 FR 42393, June 21, 2002; 68 FR 39430, July 1, 2003; 71 FR 74804, Dec. 13, 2006; 72 FR 53137, Sept. 18, 2007; 72 FR 61536, Oct. 31, 2007; 73 FR 60155, Oct. 10, 2008; 75 FR 56014, Sept. 15, 2010; and 76 FR 34885, June 15, 2011.
(a) General. Tolerances are established for combined residues of the herbicide, amicarbazone [4-amino-4, 5-dihydro- N-(1,1-dimethylethyl)-3-(1-methylethyl)-5-oxo-1H-1,2,4-triazole-1-carboxamide] and its metabolites DA amicarbazone [N-(1,1-dimethylethyl)-4,5-dihydro-3-(1-methylethyl)-5-oxo-1H-1,2,4-triazole-1-carboxamide] and iPr-2-OH DA amicarbazone [N-(1,1-dimethylethyl)-4,5-dihydro-3-(1-hydroxy-1-methylethyl)-5-oxo-1H-1,2,4-triazole-1-carboxamide], calculated as parent equivalents, in or on the following commodities:
| Commodity | Parts per million |
|---|---|
| Cattle, fat | 0.01 |
| Cattle, liver | 1.0 |
| Cattle, meat | 0.01 |
| Cattle, meat byproducts, except liver | 0.10 |
| Corn, field, forage | 0.80 |
| Corn, field, grain | 0.05 |
| Corn, field, stover | 1.0 |
| Goat, fat | 0.01 |
| Goat, liver | 1.0 |
| Goat, meat | 0.01 |
| Goat, meat byproducts, except liver | 0.10 |
| Hog, fat | 0.01 |
| Hog, liver | 0.10 |
| Hog, meat | 0.01 |
| Hog, meat byproducts, except liver | 0.01 |
| Horse, fat | 0.01 |
| Horse, liver | 1.0 |
| Horse, meat | 0.01 |
| Horse, meat byproducts, except liver | 0.10 |
| Milk | 0.01 |
| Poultry, liver | 0.10 |
| Sheep, fat | 0.01 |
| Sheep, liver | 1.0 |
| Sheep, meat | 0.01 |
| Sheep, meat byproducts, except liver | 0.10 |
| Sugarcane, cane 1 | 0.2 |
| Sugarcane, molasses 1 | 0.5 |
| 1 There are no current U.S. registrations | |
(b) Section 18 emergency exemptions. [Reserved]
(c) Tolerances with regional registrations. [Reserved]
(d) Indirect or inadvertent residues. Tolerances are established for the indirect or inadvertent residues of amicarbazone [4-amino-4, 5-dihydro-N-(1,1-dimethylethyl)-3-(1-methylethyl)-5-oxo-1H-1,2,4-triazole-1-carboxamide] and its metabolites DA amicarbazone [N-(1,1-dimethylethyl)-4,5-dihydro-3-(1-methylethyl)-5-oxo-1H-1,2,4-triazole-1-carboxamide] and iPr-2-OH DA amicarbazone [N-(1,1-dimethylethyl)-4,5-dihydro-3-(1-hydroxy-1-methylethyl)-5-oxo-1H-1,2,4-triazole-1-carboxamide], calculated as parent equivalents, in or on the following commodities when present therein as a result of application of amicarbazone to the growing crops in paragraph (a) of this section:
| Commodity | Parts per million |
|---|---|
| Alfalfa, forage | 0.05 |
| Alfalfa, hay | 0.10 |
| Cotton, gin byproducts | 0.30 |
| Cotton, undelinted seed | 0.07 |
| Soybean, forage | 1.50 |
| Soybean, hay | 5.0 |
| Soybean, seed | 0.80 |
| Wheat, bran | 0.15 |
| Wheat, flour | 0.15 |
| Wheat, forage | 0.50 |
| Wheat, germ | 0.15 |
| Wheat, grain | 0.10 |
| Wheat, hay | 1.0 |
| Wheat, middlings, | 0.15 |
| Wheat, shorts | 0.15 |
| Wheat, straw | 0.50 |
[70 FR 55760, Sept. 23, 2005, as amended at 74 FR 46377, Sept. 9, 2009; 90 FR 47239, Oct. 1, 2025]