40 CFR § 180.106 - Diuron; tolerances for residues.

---
identifier: "/us/cfr/t40/s180.106"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 180.106 - Diuron; tolerances for residues."
title_number: 40
title_name: "Protection of Environment"
section_number: "180.106"
section_name: "Diuron; tolerances for residues."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "E"
subchapter_name: "PESTICIDE PROGRAMS"
part_number: "180"
part_name: "TOLERANCES AND EXEMPTIONS FOR PESTICIDE CHEMICAL RESIDUES IN FOOD"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 321(q), 346a and 371."
regulatory_source: "36 FR 22540, Nov. 25, 1971, unless otherwise noted."
cfr_part: "180"
---


# 180.106 Diuron; tolerances for residues.

(a) *General.* Tolerances are established for the combined residues of the herbicide diuron, 3-(3,4-dichlorophenyl)-1,1-dimethylurea and its metabolites convertible to 3,4-dichloroaniline in or on food commodities, as follows:

| Commodity | Parts per million |
| --- | --- |
| Alfalfa, forage | 3.0 |
| Alfalfa, hay | 2.0 |
| Apple | 0.1 |
| Artichoke, globe | 1 |
| Asparagus | 7 |
| Banana | 0.1 |
| Berry group 13 | 0.1 |
| Cattle, fat | 1 |
| Cattle, meat | 1 |
| Cattle, meat byproducts | 1 |
| Citrus, oil | 3.0 |
| Corn, field, grain | 0.1 |
| Corn, pop, grain | 0.1 |
| Cotton, undelinted seed | 0.2 |
| Fish - freshwater finfish, farm raised | 2.0 |
| Fruit, citrus, group 10, except lemon | 0.05 |
| Goat, fat | 1 |
| Goat, meat | 1 |
| Goat, meat byproducts | 1 |
| Grain, aspirated fractions | 5.0 |
| Grape | 0.05 |
| Grass, forage, except bermudagrass | 2 |
| Grass, hay, except bermudagrass | 2 |
| Hazelnut | 0.1 |
| Hog, fat | 1 |
| Hog, meat | 1 |
| Hog, meat byproducts | 1 |
| Horse, fat | 1 |
| Horse, meat | 1 |
| Horse, meat byproducts | 1 |
| Lemon | 0.5 |
| Nut, macadamia | 0.05 |
| Olive | 1 |
| Papaya | 0.5 |
| Peach | 0.1 |
| Pear | 1 |
| Pea, field, seed | 0.1 |
| Pea, field, vines | 2 |
| Pea, field, hay | 2 |
| Pecan | 0.05 |
| Peppermint, tops | 1.5 |
| Pineapple | 0.1 |
| Pineapple, process residue | 0.4 |
| Sheep, fat | 1 |
| Sheep, meat | 1 |
| Sheep, meat byproducts | 1 |
| Sorghum, grain, forage | 2 |
| Sorghum, grain, grain | 0.5 |
| Sorghum, grain, stover | 2 |
| Spearmint, tops | 1.5 |
| Sugarcane, cane | 0.2 |
| Sugarcane, molasses | 0.7 |
| Walnut | 0.05 |
| Wheat, bran | 0.7 |
| Wheat, forage | 2 |
| Wheat, grain | 0.5 |
| Wheat, hay | 2 |
| Wheat, straw | 1.5 |

(b) *Section 18 emergency exemptions.* [Reserved]

(c) *Tolerances with regional registrations.* Tolerances with a regional registration as defined in § 180.1(l) are established for the combined residues of the herbicide diuron (3-(3,4-dichlorophenyl)-1,1-dimethylurea and its metabolites convertible to 3,4-dichloroaniline) in or on the raw agricultural commodities:

| Commodity | Parts per million |
| --- | --- |
| Barley, bran | 0.7 |
| Barley, grain | 0.2 |
| Barley, hay | 2 |
| Barley, straw | 1.5 |
| Cactus | 0.05 |
| Clover, forage | 0.1 |
| Clover, hay | 1.0 |
| Oat, forage | 2 |
| Oat, grain | 0.1 |
| Oat, hay | 2 |
| Oat, straw | 1.5 |
| Trefoil, forage | 0.1 |
| Trefoil, hay | 1.5 |
| Vetch, forage | 0.1 |
| Vetch, hay | 1.5 |

(d) *Indirect or inadvertent residues.* [Reserved]

[63 FR 2164, Jan. 14, 1998, as amended at 63 FR 57072, Oct. 26, 1998; 64 FR 41305, July 30, 1999; 66 FR 28671, May 24, 2001; 67 FR 46883, July 17, 2002; 69 FR 71717, Dec. 10, 2004; 72 FR 32540, June 13, 2007; 72 FR 35666, June 29, 2007; 73 FR 54958, Sept. 24, 2008; 76 FR 34885, June 15, 2011]