field standards (c) | ||||
class | land standards minimum years | isolation standards minimum feet | off-type maximum ratio | other crop maximum no standard |
Foundation | 1 (a) | 1,000 (b) | None found | — |
Registered | 1 (a) | 1,000 (b) | 1 head/50,000 | — |
Certified | 1 (a) | 1,000 (b) | 1 head/20,000 | — |
(a) | Waived if the previous crop was grown from an equal or higher certified class of seed of the same variety. |
(b) | Refers to fields of other varieties or same variety which does not meet tolerance of off-types. |
(c) | Other tolerances for field standards: |
johnsongrass maximum | head smut maximum | kernel smut maximum | |
Foundation | None found | None found | None found |
Registered | None found | None found | None found |
Certified | None found | 1 head/10,000 | 1 head/2,500 |
class | off-type maximum % | pure seed minimum % | inert maximum % | other crop maximum % | weed maximum % | germination minimum % |
Foundation | None found | 97 | 3 (b) | None found | 0.10 | 80 |
Registered | None found | 97 | 3 (b) | 0.03 | 0.10 | 80 |
Certified | 0.01 (a) | 97 | 3 (b) | 0.07 (c) | 0.10 | 80 |
(a) | Or two seeds per pound. |
(b) | Where two percent or more is cracked. |
(c) | Or ten seeds per pound. |