class | land standards minimum years | isolation standards minimum feet | off-type maximum head ratio | other crop maximum head ratio | wild oat maximum plants/acre |
Foundation | 2 (a) | 50 same genus (b) 3 different genus | None found | None found (c), (d) | None found |
Registered | 1 (a) | 10 same genus 3 different genus (b) | 1/148,000 | 1/148,000 (c) | 5 |
Certified | 1 (a) | 10 same genus 3 different genus (b) | 1/49,000 | 1/49,000 (c) | 5 |
(a) | Waived if the previous crop is grown from an equal or higher certified class of seed of the same variety. |
(b) | Each rye field for certification must be isolated by three feet from fields producing a certified class of the same variety, and by six hundred sixty feet from other rye fields. Each triticale field for certification must be isolated by three feet from fields producing a certified class of the same variety, and by three hundred feet from other triticale, rye and wheat fields for foundation and registered class, and ten feet for certified class, unless otherwise stated by the plant breeder. |
(c) | Refers to other small grains, except that no rye or triticale is permitted in barley, oat, or wheat; and no vetch is permitted in barley, oat, rye, triticale, or wheat. |
(d) | Only one reinspection is allowed for foundation fields when triticale is found in the first inspection. Additional inspections are allowed if the field is downgraded to the registered or certified class. |
Class | Foundation | Registered | Certified |
Pure seed % (minimum) | 98 | 98 | 98 |
Inert % (maximum) | 2 | 2 | 2 |
Off-type (a) % (maximum) | None found | 2/lb | 4/lb |
Other small grain excluding triticale and rye (a) (maximum) | None found | 1/lb | 2/lb |
Triticale allowed in wheat and rye | None found | None found | None found |
Triticale allowed in oats and barley | None found | None found | 1/lb |
Other crop (b) % (maximum) | None found | 0.03 | 0.05 |
Weed seed % (maximum) | 0.01 | 0.01 | 0.03 |
Objectionable weed seed (c) (maximum) | None found | None found | None found |
Wild oat (maximum) | None found | None found | None found (d) |
Viability (e) % (minimum) | 85 | 85 | 85 |
(a) | The combination of other small grain and off-type must not exceed 2/lb for registered class, and 4/lb for certified class. The tolerance for rye is none found in barley, oat, triticale, or wheat. |
(b) | Excluding off-type and other small grain. No vetch is allowed in small grain seed. |
(c) | Excluding wild oat. |
(d) | 1/lb for certified class oat. |
(e) | A certification certificate is issued upon receipt of either an official AOSA tetrazolium or germination test which meets minimum Washington viability standards. NOTE: State and federal seed laws require seed be labeled based on a germination test. |
Note: | For all classes the purity analysis is based on 100 grams examined. For registered and certified classes, noxious weed, vetch, off-type, and other small grain determinations are based on 500 grams. For foundation class, noxious weed, vetch, off-type, and other small grain determinations are based on 1000 grams examined. |