# Prohexadione Calcium; Pesticide Tolerance
> **Rule** · Final rule. · Published 2001-06-01 · Effective 2001-06-01 · 66 FR 29705
## Document
- **Document number:** 01-13774
- **Category:** pesticide
- **Federal Register citation:** 66 FR 29705
- **CFR reference:** 40 CFR 180
- **Publication date:** 2001-06-01
- **Effective date:** 2001-06-01
- **EPA docket:** OPP-301128
## Abstract

This regulation establishes a tolerance for residues of prohexadione calcium (calcium 3-oxido-5-oxo-4-propionylcyclohex-3- enecarboxylate) in or on grass forage, grass hay, grass straw and grass seed screenings. K-I Chemical U.S.A. Inc. requested these tolerances under the Federal Food, Drug, and Cosmetic Act, as amended by the Food Quality Protection Act of 1996.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/06/01/01-13774/prohexadione-calcium-pesticide-tolerance)
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