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Improvement Association

Land Requirements

Soybeans shall be grown on land on which the previous crop was of another kind, or planted with a class of certified seed of the same variety or with a variety of a contrasting pubescence or hilum color.

Field Inspection

At least one field inspection shall be made prior to harvest preferably after the leaves have dropped.

Field Standards

General Requirements

Unit of Certification

The unit of certification shall be a field, but a portion of a field may be approved provided the discarded portion can be harvested separately and is eliminated from certification.

Isolation

Soybean fields intended for certification shall be separated from any other variety or uncertified field of the same variety by a distance adequate to prevent mechanical mixture.

Specific Requirements

FactorMaximum permitted for each class: FoundationMaximum permitted for each class: Registered Maximum permitted for each class: Certified
Other varieties:Variety1:1000 1:1000 1:500
Objectionable weeds ¹NoneNoneNone

1Seeds of which cannot be readily separated from soybeans

Referee Sample

A two-pound sample of the seed as it is offered for sale shall be submitted to the Association for laboratory analysis.

Seed Standards

FactorStandards for each class: FoundationStandards for each class: RegisteredStandards for each class: Certified
Pure seed (minimum)98.00%98.00%98.00%
Inert matter (maximum)2.00%2.00%2.00%
Weed seed (maximum)NoneNone3 per lb
Prohibited weeds (maximum)¹NoneNoneNone
Other kinds (maximum)20.10%0.10%0.10%
Other varieties (maximum)30.10%0.10%0.20%
Germination80.00%80.00%80.00%

1See Section XLI P, also, horsenettle (Solanum carolinense) and silverleaf nightshade (Solanum elaeagnifolium), moonflower (Calonyction muricatum), balloonvine (Cardiosperm halicacabum), cocklebur (Xanthium spp.), and morningglory (Ipomoea spp.).
2Not to exceed 3 per pound in any class. Corn or sunflower seed Foundation and Registered – none; Certified – 1 per pound.
3Off-colored beans due to environmental factors shall not be considered other varieties.