(1) Alfalfa seed must be free of prohibited noxious weed seeds.
(2) Foundation class must be free of Brassica spp.
(3) Seed standards for the production of alfalfa seed are as follows:
Purity | Foundation | Registered | Certified |
Pure seed (minimum) | 99.00% | 99.00% | 99.00% |
Other crop (maximum) | 0.10% | 0.10% | 0.25% |
Sweet clover (maximum) | None found | None found | 90 per lb. |
Inert matter (maximum) | 1.00% | 1.00% | 1.00% |
Weed seed (maximum) | 0.10% | 0.20% | 0.25% |
Brassica species | None found | — | — |
Prohibited weeds | None found | None found | None found |
Objectionable weed (maximum) | None found | None found | 18 per lb. |
Germination (minimum total germ and hard seed) | 80.00% | 85.00% | 85.00% |
or TZ, Tetrazolium Test (minimum total of TZ and hard seed) | 82.00% | 87.00% | 87.00% |
[Statutory Authority: RCW 15.49.005, [15.49].021, [15.49].310, [15.49].370, 15.140.030, and chapter 15.49 RCW. WSR 25-09-035, s 16-302-240, filed 4/9/25, effective 5/10/25. Statutory Authority: RCW 15.49.005, 15.49.310, 15.49.370(3), chapters 17.24 and 34.05 RCW. WSR 17-13-130, § 16-302-240, filed 6/21/17, effective 7/22/17. Statutory Authority: RCW 15.49.005, 15.49.081, 15.49.310, 15.49.370(3) and chapter 17.24 RCW. WSR 00-24-077, § 16-302-240, filed 12/4/00, effective 1/4/01.]