Field tolerances for alfalfa seed certification.
Field tolerances for the production of alfalfa seed are as follows:
| Field Producing* |
| Foundation | Registered | Certified |
Other varieties | 0.1% | 0.5% | 1.0% |
Sweet Clover | none found | 5 plants/acre | 10 plants/acre |
Red Clover | none found | 4 plants/acre | 20 plants/acre |
* | Prohibited noxious weeds must be controlled to prevent seed formation. |