Table 23-2. Field standards in Oregon.

Class of seed produced 

Maximum permitted for other cultivars† 

Isolation < 2 ha 

Isolation > 2 ha 

Foundation 

none 

290 m (900 ft) 

290 m (900 ft)

Registered 

0.5%

215 m (660 ft)

98 m (300 ft)

Certified

1.0%

107 m (330 ft)

53 m (165 ft)

† Includes off-type plants.

<--Paddock (Field) Selection

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Tall Fescue Monograph