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§180.547 Prohexadione calcium; tolerances for residues.

RegSensePesticidesPesticidesPesticide Registration and LabelingCFR RegulationsEnvironmental Protection Agency (EPA)Federal Insecticide, Fungicide and Rodenticide ActEnvironmentalCFR SectionEnglishFocus AreaPesticidesUSA

(a) General. Tolerances are established for residues of the growth regulator, prohexadione calcium, 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 prohexadione calcium (calcium 3-oxido-5-oxo-4-propionylcyclohex-3-enecarboxylate)” in or on the following commodities.

Commodity Parts per million
1Registration is limited to grass grown for seed.
Cattle, kidney 0.10
Cattle, meat byproducts, except kidney 0.05
Cherry, sweet 0.40
Fruit, pome, group 11 3.0
Goat, kidney 0.10
Goat, meat byproducts, except kidney 0.05
Grass, forage 1 0.10
Grass, hay 1 0.10
Grass, seed screenings 1 3.5
Grass, straw 1 1.2
Hog, kidney 0.10
Hog, meat byproducts, except kidney 0.05
Horse, kidney 0.10
Horse, meat byproducts, except kidney 0.05
Peanut 1.0
Peanut, hay 0.60
Sheep, kidney 0.10
Sheep, meat byproducts, except kidney 0.05
Strawberry 0.30
Watercress 4.0

(b) Section 18 emergency exemptions. [Reserved]

(c) Tolerances with regional registrations. Tolerances with regional registration are established for residues of the plant growth regulator, prohexadione calcium, including its metabolites and degradates, in or on the commodities in table 2 in this paragraph (c). Compliance with the tolerance levels specified in table 2 in this paragraph (c) is to be determined by measuring only prohexadione calcium (calcium 3-oxido-5-oxo-4-propionylcyclohex-3-enecarboxylate) in or on the following commodities.

Table 2 to Paragraph (c)
Commodity Parts per million
Alfalfa, forage 0.1
Alfalfa, hay 0.1
Corn, field, forage 0.1
Corn, field, grain 0.1
Corn, field, stover 0.1

(d) Indirect or inadvertent residues. [Reserved]

[65 FR 25660, May 3, 2000, as amended at 66 FR 29712, June 1, 2001; 76 FR 71464, Nov. 18, 2011; 80 FR 38980, July 8, 2015; 85 FR 8461, Feb. 14, 2020]

['Pesticides']
['Federal Insecticide, Fungicide and Rodenticide Act', 'Pesticide Registration and Labeling', 'Pesticides']
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