Rule 303.
Classes | of Seed | |
Factor | Foundation | Certified |
Other varieties (maximum) | none | 1.0% |
Isolation1, 2, 3 | ||
Less than 5 acres (minimum) | 2,640 feet | 330 feet |
More than 5 acres (minimum) | 900 feet | 165 feet |
1 This distance shall be maintained from all varieties of ryegrass. Diploid ryegrass varieties need not be isolated from tetraploid ryegrass varieties, except for a distance of 15 feet to prevent mechanical mixture.
2 Fields that are used to produce foundation perennial ryegrass seed shall be isolated a minimum distance of 330 feet from tall fescue.
3 See R 285.623.302 - Isolation.
Classes | of Seed | |
Factor | Foundation | Certified |
Total ryegrass (minimum) | 97.0% | 97.0% |
Other ryegrass (maximum) | 0.1% | 3.0% |
Crop other than ryegrass (maximum) | 0.1% | 0.5% |
Total other crop including other | ||
ryegrass (maximum) | 0.2% | 3.5% |
Inert matter (maximum) | 3.0% | 3.0% |
Weed seed (maximum) | 0.15% | 0.5% |
Prohibited noxious weeds (maximum | ) none | none |
Restricted noxious weeds and | ||
St. Johnswart, docks, sheep | ||
sorrel, bedstraw (maximum) | 27 per pound | 45 per pound |
Germination (minimum) | 85.0% |
Mich. Admin. Code R. 285.623.303