PDFWAC 16-302-815
Seed standards for sunflower seed production.
(1) Samples submitted for certification must be a minimum of one thousand grams.
(2) Seed standards for sunflowers are as follows:
Factor | Foundation | Registered | Certified |
Pure seed - Minimum % | 98 | 98 | 98 |
Inter matter - Maximum % | 2 | 2 | 2 |
Other varieties* - Maximum | 1 seed/lb. | 1 seed/lb. | 6 seeds/lb. of which may not consist of more than 1 purple or white seed |
Other crop seed - Maximum | 1 seed/lb. | 1 seed/lb. | 6 seeds/lb. |
Corn or castor bean seed | None found | None found | None found |
Weed seed - Maximum % | None found | None found | 0.10 |
Germination - Minimum % | 85 | 85 | 85 |
* | Varietal differentiation cannot always be distinguished in a seed sample. When varietal differences are evident this standard applies. |