# Diflufenzopyr; Pesticide Tolerance
> **Rule** · Final rule. · Published 1999-01-28 · Effective 1999-01-28 · 64 FR 4301
## Document
- **Document number:** 99-1901
- **Category:** pesticide
- **Federal Register citation:** 64 FR 4301
- **CFR reference:** 40 CFR 180
- **Publication date:** 1999-01-28
- **Effective date:** 1999-01-28
- **EPA docket:** OPP-300778
## Abstract

This regulation establishes a tolerance for combined residues of diflufenzopyr, 2-(1-[([3,5-difluorophenylamino]carbonyl)- hydrazono]ethyl)-3-pyridinecarboxylic acid, and its metabolites convertible to M1 (8-methylpyrido[2,3-d]pyridazin-5(6H)-one) in or on field corn stover, forage and grain. BASF Corporation requested this tolerance under the Federal Food, Drug, and Cosmetic Act (FFDCA), as amended by the Food Quality Protection Act of 1996 (Pub. L. 104-170).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/01/28/99-1901/diflufenzopyr-pesticide-tolerance)
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