# Black Stem Rust; Additions of Rust-Resistant Varieties
> **Animal and Plant Health Inspection Service** · Direct final rule. · Published 2010-05-25 · Effective 2010-07-26 · 75 FR 29191
## Document
- **Document number:** 2010-12529
- **Category:** plant-animal-health
- **Sub-agency:** Animal and Plant Health Inspection Service
- **Federal Register citation:** 75 FR 29191
- **CFR reference:** 7 CFR 301
- **Publication date:** 2010-05-25
- **Effective date:** 2010-07-26
- **USDA docket:** Docket No. APHIS-2010-0035
## Abstract

We are amending the black stem rust quarantine and regulations by adding 21 varieties to the list of rust-resistant Berberis species or cultivars and 2 varieties to the list of rust-resistant Mahonia species or cultivars in the regulations. This action will allow for the interstate movement of these newly developed varieties without unnecessary restrictions.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2010/05/25/2010-12529/black-stem-rust-additions-of-rust-resistant-varieties)
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