(a) General. (1) Tolerances are established for residues of the herbicide pyroxasulfone, including its metabolites and degradates, in or on the commodities in the table below. Compliance with the tolerance levels specified below is to be determined by measuring only the sum of pyroxasulfone, 3-[[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methyl]sulfonyl]-4,5-dihydro-5,5-dimethylisoxazole, and its metabolite, 5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-carboxylic acid (M-3), calculated as the stoichiometric equivalent of pyroxasulfone, in or on the commodity. ------------------------------------------------------------------------
Parts per
Commodity million------------------------------------------------------------------------Corn, field, grain......................................... 0.02Corn, pop, grain........................................... 0.015Corn, sweet, kernel plus cob with husks removed............ 0.015Cotton, undelinted seed.................................... 0.04Wheat, grain............................................... 0.03------------------------------------------------------------------------
(2) Tolerances are established for residues of the herbicide pyroxasulfone, including its metabolites and degradates, in or on the commodities in the table below. Compliance with the tolerance levels specified below is to be determined by measuring only the sum of pyroxasulfone, 3-[[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methyl]sulfonyl]-4,5-dihydro-5,5-dimethylisoxazole, and its metabolites, 5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methanesulfonic acid (M-1); 5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-carboxylic acid (M-3); and [5-(difluoromethoxy)-3-(trifluoromethyl)-1H-pyrazol-4-yl]methanesulfonic acid (M-25), calculated as the stoichiometric equivalent of pyroxasulfone, in or on the commodity. ------------------------------------------------------------------------
Parts per
Commodity million------------------------------------------------------------------------Corn, field, forage........................................ 0.09Corn, field, stover........................................ 0.15Corn, pop, stover.......................................... 0.15Corn, sweet, forage........................................ 0.10Corn, sweet, stover........................................ 0.15Cotton, gin byproducts..................................... 0.20Soybean, forage............................................ 1.0
Soybean, hay............................................... 2.0Wheat, forage.............................................. 6.0Wheat, hay................................................. 1.0Wheat, straw............................................... 0.60------------------------------------------------------------------------
(3) Tolerances are established for residues of the herbicide pyroxasulfone, including its metabolites and degradates, in or on the commodities in the table below. Compliance with the tolerance levels specified below is to be determined by measuring only the sum of pyroxasulfone, 3-[[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methyl]sulfonyl]-4,5-dihydro-5,5-dimethylisoxazole, and its metabolites, 5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-carboxylic acid (M-3); [5-(difluoromethoxy)-3-(trifluoromethyl)-1H-pyrazol-4-yl]methanesulfonic acid (M-25); and 3-[1-carboxy-2-(5,5-dimethyl-4,5-dihydroisoxazol-3-ylthio)ethylamino]-3-oxopropanoic acid (M-28), calculated as the stoichiometric equivalent of pyroxasulfone, in or on the commodity. ------------------------------------------------------------------------
Parts per
Commodity million------------------------------------------------------------------------Soybean, seed............................................... 0.06------------------------------------------------------------------------
(4) Tolerances are established for residues of the herbicide pyroxasulfone, including its metabolites and degradates, in or on the commodities in the following table. Compliance with the tolerance levels specified in the following table is to be determined by measuring only the sum of pyroxasulfone [3-[[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methyl]sulfonyl]-4,5-dihydro-5,5-dimethylisoxazole] and its metabolites [5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methanesulfonic acid (M-1) and 5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-carboxylic acid (M-3), calculated as the stoichiometric equivalent of pyroxasulfone, in or on the commodity. ------------------------------------------------------------------------
Parts per
Commodity million------------------------------------------------------------------------Milk....................................................... 0.003------------------------------------------------------------------------
(b) Section 18 emergency exemptions. [Reserved]
(c) Tolerances with regional registrations. [Reserved]
(d) Indirect or inadvertent residues. [Reserved] [77 FR 12213, Feb. 29, 2012, as amended at 78 FR 13257, Feb. 27, 2013; 78 FR 46279, July 31, 2013; 79 FR 34633, June 18, 2014]