2 CAR § 34-1303
(a) Isolation.
| Class | Minimum Isolation |
| Foundation | 60 rods |
| Registered | 60 rods |
| Blue Tag Certified | 40 rods (2) |
(2)
| Factor | STANDARDS FOR EACH CLASS | ||
| Factor | Foundation | Registered | Certified Blue Tag |
| Other Varieties-definite | None | None | .005%(1 in 20,000) |
| Off-type or Doubtful Plants | None | .01%(1 in 10,000) | .02%(1 in 5,000) |
| Field Bindweed, Johnsongrass, Itchgrass, Tropical Soda Apple, Balloon vine, Serrated Tussock | None | None | None |
| Seedborne Disease (smut) | None | None | .01%(1 in 10,000) |